U.S. public vehicle records

2023 Hyundai IONIQ 5 problems and owner complaints

Explore the records behind recurring owner reports.

Key facts

387 owner complaints analyzed

4 distinct recall campaigns

15,500 mi median reported failure mileage

Scope: 2023 model year. Data updated: 2026-10-03 (October 3, 2026). 10 complaints include usable failure mileage. View data status.

Owner-reported patterns

Most common problems

Electrical System is the most frequently named component, appearing in 272 of 387 complaints (70.3%). A complaint can name multiple components.

Recurring terms in complaint narratives
Topic	Matching reports	Share of complaints
Electrical and battery issues	162	41.9%
Braking behavior	41	10.6%
Engine operation	21	5.4%
Steering behavior	18	4.7%
Transmission and shifting	6	1.6%

Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.

Component breakdown

Number of unique complaints naming each component. Top eight shown.

Electrical System

272

Power Train

Fuel/Propulsion System

Unknown Or Other

Engine

Service Brakes

Vehicle Speed Control

Forward Collision Avoidance: Adaptive Cruise Control

Component breakdown data
Category	Count
Electrical System	272
Power Train	72
Fuel/Propulsion System	67
Unknown Or Other	44
Engine	37
Service Brakes	24
Vehicle Speed Control	18
Forward Collision Avoidance: Adaptive Cruise Control	11

Electrical System: 272; Power Train: 72; Fuel/Propulsion System: 67; Unknown Or Other: 44; Engine: 37; Service Brakes: 24; Vehicle Speed Control: 18; Forward Collision Avoidance: Adaptive Cruise Control: 11

Reported problems by failure mileage

Complaint counts in mileage bands. These are not failure rates per vehicle or mile.

Under 25,000

25,000 to 49,999

50,000 to 74,999

75,000 to 99,999

100,000 to 149,999

150,000 and above

Under 25,000: 7; 25,000 to 49,999: 2; 50,000 to 74,999: 1; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0

Under 25,000 miles has the most reports with usable mileage (7). 377 complaints have missing, zero or invalid mileage.

Complaints over time

Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.

2023

2024

2025

117

2026

124

2023: 76; 2024: 70; 2025: 117; 2026: 124

Pattern summary

Electrical System leads the component reports. Electrical and battery issues appears in 162 complaint narratives. Braking behavior appears in 41 complaint narratives. Engine operation appears in 21 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.

Calculated from recorded counts. An AI narrative has not been published for this selection.

Complaint evidence

Examples provide context, not a representative sample or a verified diagnosis.

Owner report 11523114 · 2023-05-21 (May 21, 2023)

12V battery does not seem to be charging. After 2 days of not being driven, 12v battery status is too low to start the car. Jump starting works but same think occurs after couple of days of not driven.

Owner-reported narrative. Look up ODI 11523114 at NHTSA ↗

Owner report 11524572 · 2023-05-31 (May 31, 2023)

12v battery died within 6 days and needed to be jumped. Another 4 days and the 12v will not hold a charge at all. This is a new 2023 Ioniq 5 Limited AWD. Odo on the lot was 13 miles. Odo at 10 days was around 280. Waiting to hear from Hyundai, but dealer confirmed 12v is bad. Currently unknown if ICCU is also faulty.

Owner-reported narrative. Look up ODI 11524572 at NHTSA ↗

Owner report 11509945 · 2023-03-02 (March 2, 2023)

While driving in the one pedal driving mode (“iPedal”), it is possible to rapidly slow the vehicle while keeping the accelerator pedal slightly depressed, which is the expected result for this regenerative braking mode. While rapidly decelerating in this mode, however, the brake lights do not illuminate while the accelerator pedal is slightly depressed. Even though regenerative braking is active and the car is rapidly decelerating, there is no brake light illumination. The brake lights only turn on if the accelerator pedal is not pressed at al…

Owner-reported narrative. Look up ODI 11509945 at NHTSA ↗

Owner report 11511276 · 2023-03-10 (March 10, 2023)

When using i-Pedal (one-pedal driving) mode in this vehicle, it can decelerate at a very fast rate but does not illuminate the brake lights unless the driver’s foot is completely off the pedal. For example, I can be driving 60mph and decelerate to ~2mph as quickly as other drivers coming to a complete stop, but my brake lights will not illuminate until my foot is **completely** removed from the pedal. This is contradictory to the way one-pedal driving works, since coming to a smooth and slow stop requires that you slowly lift off the accelera…

Owner-reported narrative. Look up ODI 11511276 at NHTSA ↗

Owner report 11531240 · 2023-07-10 (July 10, 2023)

Loss of power when accelerating, Warning lights came on and off in blinking style. After losing power to zero , it would jump accelerate hard then die again.

Owner-reported narrative. Look up ODI 11531240 at NHTSA ↗

Owner report 11539136 · 2023-08-17 (August 17, 2023)

Driving on the highway, my car will suddenly lose power momentarily and the speed drop 3-5 mph. My accelerator is unresponsive. Then the car will accelerate quickly with a jerk to accelerate to the set speed. May occur on level ground but often occurs at the bottom of a hill. I have no control during this loss of power.

Owner-reported narrative. Look up ODI 11539136 at NHTSA ↗

Owner report 11528668 · 2023-06-24 (June 24, 2023)

When starting vehicle, presents a warning message in instrument panel of "Check electric vehicle system". The stated description indicates: "This warning message is displayed when there is a problem with the electric vehicle control system. Refrain from driving when the warning message is displayed." This could be an issue with the battery system, or steering system that puts others in danger due to the unpredictable nature of the error. The Hyundai app that reports vehicle statuses does not show any error or diagnostic codes.

Owner-reported narrative. Look up ODI 11528668 at NHTSA ↗

Owner report 11550946 · 2023-10-20 (October 20, 2023)

Driving on freeway when adaptive cruise control turns off and had a sudden complete loss of acceleration, we had steering and brakes only. Sudden reduction of car speed in traffic could cause accident. Has only happened once in 20k miles. (no acceleration) Adaptive cruise control shuts off for no reason, but dealer couldn't replicate. In recent 8k trip we photographed warning on dash 17 + times after shut down. Dealer couldn't find any saved trouble codes for this. No warnings prior to any occurrence only after, dash turned off on acceleration …

Owner-reported narrative. Look up ODI 11550946 at NHTSA ↗

Owner report 11523865 · 2023-05-25 (May 25, 2023)

When using the most aggressive braking energy recovery mode in the Hyundai Ioniq 5 (i-Pedal), the brake lights do not illuminate despite the aggressive nature of the braking provided by this mode. This mode brings the car to a full and complete stop and is very similar to commanded braking via the brake pedal. When using the L1-L3 braking energy recovery modes, the deceleration experienced by the car is more or less mild enough that it would be similar to a downshift in a manual transmission car. But the brake lights only illuminate if your fo…

Owner-reported narrative. Look up ODI 11523865 at NHTSA ↗

Owner report 11576335 · 2024-03-09 (March 9, 2024)

I attempted to drive my car to work. The car started but would not shift into gear. A red battery light indicator was on in the lower left corner of the screen. I contacted my dealer and they asked me to jump my car and bring it in. I did that. They indicated that my car had experienced ICCU failure and that a part would need to be ordered. The car had already been updated to address the ICCU failure, or so I thought. This is a known issue with 2022 models.

Owner-reported narrative. Look up ODI 11576335 at NHTSA ↗

Explore the data

Vehicle analysis explorer

Inspect model-year patterns, reported mileage, monthly activity and the evidence behind each signal.

Data completeness

387 unique complaints in this selection. Analysis snapshot: 2026-10-03.

2.6%Usable mileage10 / 387 records

100.0%Valid incident date387 / 387 records

100.0%Valid filing date387 / 387 records

100.0%Ordered incident and filing dates387 / 387 records

Missing, zero and invalid mileage is excluded. Dates after the snapshot are excluded. Examples are limited selections, not a representative sample.

Problems by model year

Model-wide comparison of the eight most reported components across the model. Cells show counts and shares within each model year. Open a cell for source examples.

From model yearThrough model year

Component complaint heatmap
Component	2022	2023	2024	2025	2026
Electrical System	29873.4% ODI 11460054 I started my car up right after charging on a rainy day at 2500 miles exactly and got 5 warnings. Check battery, lane assist warning, abs warning, parking brake warning, forward collision warning and bling spot collision avoidance warning lights were on. More or less all these systems triggered a fault. I tried turning it off and on to no luck. As I drove to the dealer my breaks became steadily lighter and lighter with the manual break even clicking at times. My breaking distance was doubled by the time that i got there. Other owners are seein… Look up ODI 11460054 at NHTSA ↗	27270.3% ODI 11510093 I've owned this car for 4 months now. We own 2 electric cars, 1 ioniq 5 and 1 Fiat 500e. We have a level 2 charger in the garage. A month ago I noticed the ioniq stopped charging overnight. When I tried the next day, it charged for about 30 minutes, then I would get a msg on my phone saying charging had stopped. I can remotely start the charging again, but then it would stop every 10 or 15 minutes. This is still happening. The Fiat has no issues charging, leaving me to believe it's not the charger that is the problem. I've even reduced the char… Look up ODI 11510093 at NHTSA ↗	17478.0% ODI 11555100 Another complain for investigation PE 23-011. First car was DOA, second had an exploding pop sound and no longer charges, car is no longer usable, only 200 miles. Look up ODI 11555100 at NHTSA ↗	22676.1% ODI 11649366 These cars still have problems keeping the 12v charged. Car was leased on Jan 19. 12v first died on Feb 15, took it to dealer where they trickle charged it. 12v died again on Feb 18, dealer replaced the 12v. The 12v died again on Mar 11 and is still at dealer service center. Case with Hyundai corporate was opened and the dealer is going back and forth with them. When car is left alone for 5 days, the 12v appears as needing a replacement, so there is something wrong with the system that keeps the 12v charged or there is some parasitic drain some… Look up ODI 11649366 at NHTSA ↗	937.5% ODI 11714591 My BRAND NEW car is suffering an ICCU issue. I first noticed the screens going completely black while driving. I then noticed that I can’t charge at all on Lvl 1 and Lvl2 chargers (AC), but I went to the dealership and the helped me charge on lvl 3 DC fast charging. This is an incredibly dangerous problem, if this results in my 12V battery dying, I could be stranded while driving. Look up ODI 11714591 at NHTSA ↗
Fuel/Propulsion System	8921.9% ODI 11498694 The car randomly stops charging when plugged into either of my Level 2 home Juicebox 40 chargers before it reaches capacity, generally after adding another 4-8% to the battery. It was impossible for me to fully charge the car without plugging it in multiple times. The service people including the EV specialist said they hadn’t heard of this problem, and it was probably due to my charging unit at home. See the attached service and repair invoice . This was not true It is apparently a well-known defect in the Hyundai and Genesis cars using … Look up ODI 11498694 at NHTSA ↗	6717.3% ODI 11527682 2023 Hyundai Ioniq 5 (SEL, AWD) has bad ICCU (intergrated charging control unit). Will only charge at DC chargers reliably, level 2 or level 1 chargers will only work intermittently. Has been in the shop 2 weeks with no estimated repair date as the ICCU is on backorder. This issue is affecting a lot of Hyundai/KIA/Genesis customers who's vehicles share the same platform. The dealer won't even say where I am in line to receive the ICCU vs. everyone else in North America. This is really unacceptable for a car I paid almost $60,000 for. Look up ODI 11527682 at NHTSA ↗	5122.9% ODI 11571460 1. Uncertain which part failed. 2. safety was put at risk due to car not able to accelerate. Car would not go over 20 miles an hour on the interstate access road where traffic was going by at 50 –60 mph - four-way flashers were on and had to pull off at the first available turn but it was scary 3. Contacted local Hyundai; they are investigating a possible loaner, but haven’t said what they will do. 4. No inspections yet. 5. No warning or unusual events prior to lack of power/lack of acceleration. 6. Internet search showed that this problem has… Look up ODI 11571460 at NHTSA ↗	6622.2% ODI 11665855 The high-voltage traction battery on my 2025 Hyundai Ioniq 5 Limited RWD failed unexpectedly around [XXX], when the vehicle had approximately 1,250 miles on it and was just over 3 months old. The car had been parked in my driveway with about 80% charge while I was away for several days. When I attempted to drive it, the vehicle would not shift out of neutral. No warning lamps or error messages were displayed before the failure. The vehicle was towed to Van Hyundai in Carrollton, TX on April 3. While loading it onto the tow truck, the 12V batte… Look up ODI 11665855 at NHTSA ↗	14.2% ODI 11729532 While driving at most speeds vehicle feels like it is pulsing in power. It’s an EV and I can best describe the feeling to be like when a gas powered vehicle has a severe skip in the engine Look up ODI 11729532 at NHTSA ↗
Power Train	8420.7% ODI 11477732 · 494 mi The contact's father owns a 2022 Hyundai Ioniq 5. The contact stated that as her father attempted to place the vehicle into reverse(R) while in park(P), the gear shifter failed to operate as needed. As her father exited the vehicle with the gear shifter in the park(P)position, the vehicle accelerated on its own into his garage. The air bags did not deploy upon impact. The contact's father was not injured and a police report was not filed. The garage door and pillar were damaged, as well as, the vehicle's driver-side door. The vehicle was initia… Look up ODI 11477732 at NHTSA ↗	7218.6% ODI 11523865 When using the most aggressive braking energy recovery mode in the Hyundai Ioniq 5 (i-Pedal), the brake lights do not illuminate despite the aggressive nature of the braking provided by this mode. This mode brings the car to a full and complete stop and is very similar to commanded braking via the brake pedal. When using the L1-L3 braking energy recovery modes, the deceleration experienced by the car is more or less mild enough that it would be similar to a downshift in a manual transmission car. But the brake lights only illuminate if your fo… Look up ODI 11523865 at NHTSA ↗	3716.6% ODI 11626861 When driving in i-Pedal, which is a "one pedal driving option", sometimes after pausing the car rolls backs several inches. This appears to be a defect with the powetrain, regenerative braking engine, or otherwise. Hyundai's dealership has been advised of this issue; they have escalated this internally. A car in drive forward should never due to electrical or software reasons be told to move backwards -- which is what is happening here. Look up ODI 11626861 at NHTSA ↗	5719.2% ODI 11681677 Vehicle will hesitate/shudder and pulsate at highway speeds. Between 57mph and 78mph seems to be where I can feel it the most. This happens on all drive modes and with or without brake regeneration turned on or off. Nothing seems to make it worse or better. Here is an example. If you are driving 65mph on the highway and holding your speed steady, the car motor feels like it's cutting in and out. Juddering forward and back. If you accelerate a tiny bit, it gets ever worse. It feels almost like the input signal from the peddle is choppy, causing … Look up ODI 11681677 at NHTSA ↗	00.0% No examples available for this selection.
Unknown Or Other	307.4% ODI 11460036 We just purchased this vehicle and I found this issue. We have not had any accident. This is just an professional OBSERVATION about a potential issue. The rear carpet mat has a slick and very smooth rubber underside. This factory carpet liner sits on top of the factory carpet. With the rear fold down seats in the upright position, there is no problem but the liner does slide easily around as there is no way to attach it to the regular carpet. I asked the dealer who dosen't seem to be interested in helping with any other issues including this an… Look up ODI 11460036 at NHTSA ↗	4411.4% ODI 11528341 Twice this week while charging my Ionic 5 the charging stops before it is completely charged to the set point. Once the set point was at 80% and once at 100%. Both times the charging stopped and I received the message below. None of the reasons listed in message was a cause of the stopping. I have called my dealer and they are checking w/service dept to see if I need a software update. I am waiting to hear back but there is obviously something wrong with the rate of charge. I am using a Jukebox home charger. Look up ODI 11528341 at NHTSA ↗	198.5% ODI 11583124 I took my 2024 limited Ioniq 5 to the dealership [XXX] to have a TSB looked at and because on [XXX], I took out the cabin air filter out of the car, as I have been noticing a smell of chemical in the cabin of the car. I noticed that the filter was covered in blue windshield wiper fluid and smelled of the same chemical smell as what my wife and I had been smelling and what I believe has been giving us headaches on long trips when driving to San Antonio, Texas to visit our grandson over the last two months. The Technicians at the Hyundai Dealersh… Look up ODI 11583124 at NHTSA ↗	248.1% ODI 11663796 I purchased this car this week. The vehicle is equipped with a safety feature called Forward Attention Warning (FAW). Its purpose is to monitor the drivers attention (eyes??) and trigger an alert when the drivers attention is distracted for a period of time. I took it for the first time on a 150 mile trip. During the trip, the FAW alarm was triggered constantly. I tried changing my head position, taking my glasses on/off, changing my hands holding the wheel, etc. Nothing seemed to matter. It is not only a nuisance, but it causes other au… Look up ODI 11663796 at NHTSA ↗	312.5% ODI 11732290 Upon delivery of a brand new 2026 Hyundai Ioniq 5 with 13 miles on the odometer, the washer fluid warning illuminated the next day. Reservoir was refilled on 3/29 and was completely empty by 3/30. Vehicle was brought to the authorized dealer on 3/31. The technician confirmed via repair order that the washer fluid hose was actively spouting directly above the ICCU , Integrated Charging Control Unit , a safety-critical high voltage component. Washer fluid was confirmed present in the ICCU floor pan. The cause was a nail severing the washer fluid … Look up ODI 11732290 at NHTSA ↗
Engine	368.9% ODI 11507303 On February 6, 2023 at approximately 9:50 a.m. I was driving my Hyundai Ioniq 5 SEL northbound on CA Highway 135, Santa Maria, when I heard a loud pop coming from my car. Within a few seconds my car lost speed rapidly, from 55 mph to 25 then a second later 22 mph . I tried to accelerate - there was no response - the car maintained the 22 mph. A message appeared on the right side of the dash board in an orange circle “check vehicle system” with a small upside down triangle with letters EV also inside this circle and a “small orange battery”… Look up ODI 11507303 at NHTSA ↗	379.6% ODI 11525379 What component or system failed or malfunctioned: Rear electric motor. Specifically the "engine oil pump" that is used to cool the rear motor. The pump does not respond to MCU commands and does not cool the motor. This causes the motor to overheat after about an hour of highway driving causing the motor to provide VERY limited power. How was your safety or the safety of others put at risk: When the above happens the car experiences a delayed throttle, and very little power to accelerate. This occurs while traveling on a highway where you may n… Look up ODI 11525379 at NHTSA ↗	229.9% ODI 11602466 The car lost propulsion and displayed Check Vehicle Electric System. Now the it’s sitting at the dealership for over 30 days waiting for parts. Look up ODI 11602466 at NHTSA ↗	206.7% ODI 11680050 I have had my new car only two weeks and have driven only 500 miles. Yesterday, while driving on a freeway at constant 65 mph speed, I suddenly experienced COMPLETE POWER FAILURE. I coasted across three lanes of heavy traffic and came to a stop on the shoulder. There were no warning lights on the dashboard. I turned the car off, turned it on again, and the car drove normally. I checked on my Hyundai app and it said under Vehicle Health that all systems were normal. I called the Santa Monica Hyundai service center and was advised to drive … Look up ODI 11680050 at NHTSA ↗	14.2% ODI 11718841 The vehicle cannot initiate a level 2 charging session due to a ground fault error. Multiple charging stations were attempted with different charging connectors and adapters. Only DC fast charging works on the vehicle now. This vehicle has been leased for less than 60 days. Look up ODI 11718841 at NHTSA ↗
Vehicle Speed Control	266.4% ODI 11475351 Vehicle parked and unattended. Shifter control unit failed and vehicle rolled away. Vehicle front damage. Look up ODI 11475351 at NHTSA ↗	184.7% ODI 11521709 The Ioniq 5 offers a multi-level regenerative braking system, which slows the car down to varying degrees when letting off the accelerator pedal. While these systems work well to increase efficiency, the behaviour of the brake lights while in use is concerning. Very often the car is slowing considerably, enough to be akin to light braking, but the brake lights do not activate. This can be full let off the accelerator pedal and slowing with not brakes, or with a partial lift (especially on higher regen levels), where the vehicle is obviously slo… Look up ODI 11521709 at NHTSA ↗	73.1% ODI 11571460 1. Uncertain which part failed. 2. safety was put at risk due to car not able to accelerate. Car would not go over 20 miles an hour on the interstate access road where traffic was going by at 50 –60 mph - four-way flashers were on and had to pull off at the first available turn but it was scary 3. Contacted local Hyundai; they are investigating a possible loaner, but haven’t said what they will do. 4. No inspections yet. 5. No warning or unusual events prior to lack of power/lack of acceleration. 6. Internet search showed that this problem has… Look up ODI 11571460 at NHTSA ↗	165.4% ODI 11689922 FORWARD ATTENTION WARNING When driving, the vehicle randomly and repeatedly warns the driver to pay attention to the road even when the driver is facing forward and paying attention to the road. The system will also randomly and repeatedly alarm, disable cruise control and apply the brakes even when the driver has both hands on the wheel and is facing forward. This has nearly caused crashes. Hyundai states the system is working as designed and suggested: 1. Driver is too tall for the system see my eyes. 2. Do not wear prescription glasses. … Look up ODI 11689922 at NHTSA ↗	312.5% ODI 11714869 While driving at highway speeds (approximately 70 MPH) with the vehicle's Assistive Driving functions engaged, the Driver Monitoring System (DMS) malfunctioned. Despite maintaining constant visual attention on the road ahead, the system issued repeated, erroneous audio warnings claiming driver inattention. I attempted to adjust my head and eye position to satisfy the sensors, but the system failed to register my compliance and continued to cycle through warnings. Consequently, the vehicle initiated an unwarranted "fail-safe" maneuver and sudde… Look up ODI 11714869 at NHTSA ↗
Service Brakes	235.7% ODI 11460054 I started my car up right after charging on a rainy day at 2500 miles exactly and got 5 warnings. Check battery, lane assist warning, abs warning, parking brake warning, forward collision warning and bling spot collision avoidance warning lights were on. More or less all these systems triggered a fault. I tried turning it off and on to no luck. As I drove to the dealer my breaks became steadily lighter and lighter with the manual break even clicking at times. My breaking distance was doubled by the time that i got there. Other owners are seein… Look up ODI 11460054 at NHTSA ↗	246.2% ODI 11511276 When using i-Pedal (one-pedal driving) mode in this vehicle, it can decelerate at a very fast rate but does not illuminate the brake lights unless the driver’s foot is completely off the pedal. For example, I can be driving 60mph and decelerate to ~2mph as quickly as other drivers coming to a complete stop, but my brake lights will not illuminate until my foot is completely removed from the pedal. This is contradictory to the way one-pedal driving works, since coming to a smooth and slow stop requires that you slowly lift off the accelera… Look up ODI 11511276 at NHTSA ↗	94.0% ODI 11598800 My vehicle was 4 weeks old. On Friday 6/28/24, my vehicle displayed the following message on the dashboard, "Check Brake System". It disappeared later, and reappeared on the next day. I checked Hyundai's app, Bluelink. There was a alert on Bluelink, "Attention Needed". I opened the alert and it said that there was a Diagnostic Trouble Code, DTC C123501, that originated on 6/30/24. I took the vehicle to the dealership, Hyundai of North Miami, on the next business day, [XXX]. That morning, [XXX], as I started the vehicle, as I stepped on th… Look up ODI 11598800 at NHTSA ↗	41.3% ODI 11652207 The Forward Attention Warning system in the refreshed 2025 Ioniq 5 gives constant false positives for both my wife and myself when we are driving the car. With Hyundai's HDA and lane keep active, the system keeps chiming, claiming that the driver is not looking at the road when we are. In fact, the calibration is so poor that it is a safety issue. The constant random warnings are very distracting, and sometimes the system does not recapture your eyes before timing out and hard braking the car on the highway. This is really unacceptable and … Look up ODI 11652207 at NHTSA ↗	28.3% ODI 11760015 I am reporting a suspected safety defect involving inconsistent deceleration behavior in my 2026 Hyundai IONIQ 5. I regularly use Hyundai’s i-PEDAL one-pedal-driving mode. In this mode, releasing the accelerator produces strong regenerative deceleration and can bring the vehicle to a stop. However, the vehicle does not retain this selected driving behavior after it is turned off and restarted. It reverts to a mode requiring substantially more use of the brake pedal. The behavior also changes in connection with shifting into reverse. In a Cost… Look up ODI 11760015 at NHTSA ↗
Forward Collision Avoidance: Adaptive Cruise Control	82.0% ODI 11503875 I was driving on the highway using advanced highway assist and the car became completely unresponsive. I was traveling 75mph on a major highway with a semi behind me and one to my right in the slow lane. The car stopped accelerating and I was unable to resume driving. I was forced to coast to a stop on the side of the highway. I had my daughter with me and were I not able to safely maneuver between the semi trucks, we could have been killed or seriosuly injured in a high speed crash. Look up ODI 11503875 at NHTSA ↗	112.8% ODI 11527772 While driving on the interstate my 2023 Ioniq 5 SEL RWD experienced a failure with the front radar system stating that it was blocked. In reality there was nothing physically blocking the system which was verified on multiple pullovers to check the front of the vehicle. This caused the critical forward safety functions, HDA system, lane change assist functions, regeneration system, and smart cruise control to all be disabled. The car is available for inspection upon request and I have video of the car displaying the fault messages during the tr… Look up ODI 11527772 at NHTSA ↗	00.0% No examples available for this selection.	196.4% ODI 11652207 The Forward Attention Warning system in the refreshed 2025 Ioniq 5 gives constant false positives for both my wife and myself when we are driving the car. With Hyundai's HDA and lane keep active, the system keeps chiming, claiming that the driver is not looking at the road when we are. In fact, the calibration is so poor that it is a safety issue. The constant random warnings are very distracting, and sometimes the system does not recapture your eyes before timing out and hard braking the car on the highway. This is really unacceptable and … Look up ODI 11652207 at NHTSA ↗	28.3% ODI 11714869 While driving at highway speeds (approximately 70 MPH) with the vehicle's Assistive Driving functions engaged, the Driver Monitoring System (DMS) malfunctioned. Despite maintaining constant visual attention on the road ahead, the system issued repeated, erroneous audio warnings claiming driver inattention. I attempted to adjust my head and eye position to satisfy the sensors, but the system failed to register my compliance and continued to cycle through warnings. Consequently, the vehicle initiated an unwarranted "fail-safe" maneuver and sudde… Look up ODI 11714869 at NHTSA ↗

Darker cells indicate a larger share of submitted complaints. Components overlap. This measures complaint composition, not failure probability.

Failure mileage by component

Median and middle 50% of usable owner-reported mileages. Ranges require at least five records.

Component failure mileage distribution
Component	Mileage range (25th–75th percentile)	Median	Usable records	Examples
Electrical System	7,925–32,750 mi	16,154 mi	8	ODI 11580388 · 8,400 mi The contact owns a 2023 Hyundai Ioniq 5. The contact received notification of NHTSA Campaign Number: 24V204000 (Electrical System) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that while his son was driving at an undisclosed speed, the vehicle stalled. The battery warning light was illuminated. The contact's son was unable to restart the vehicle. The vehicle was towed to the dealer; however, the vehicl… Look up ODI 11580388 at NHTSA ↗ ODI 11620648 · 6,500 mi The contact owns a 2023 Hyundai Ioniq 5. The contact stated while driving at an undisclosed speed, the vehicle lost motive power with several unknown warning lights illuminated. The vehicle was towed to the dealer. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure and a case was opened. The approximate failure mileage was 6,500. The VIN was not available. Look up ODI 11620648 at NHTSA ↗ ODI 11651147 · 16,307 mi The contact owns a 2023 Hyundai Ioniq 5. The contact stated that the recall repairs for NHTSA Campaign Number: 24V868000 (Electrical System) and 24V204000 (Electrical System) were completed; however, the repairs failed to prevent a failure from occurring shortly afterwards. The contact stated that while attempting the charge the hybrid battery, the vehicle failed to charge to full capacity as intended. In addition, the contact was alerted by the vehicle with a Voice message that the vehicle had failed to charge as intended. No warning lights we… Look up ODI 11651147 at NHTSA ↗

Complaint and recall timeline

Explore monthly filing activity alongside recall announcements. Up to ten years of monthly history is available.

ComponentPeriod

Solid line: filed complaints. Dashed amber lines: recall announcement dates for this vehicle selection; markers include all recall components. The latest month is partial. Temporal proximity does not establish causation.

Monthly counts, recall campaigns and complaint examples

Monthly complaint and recall timeline
Month	Complaints	Campaigns announced	Examples
2024-11	4	24V868000	ODI 11623347 Car lost power due to electrical supply--12v/ICCU failure. Warning on dash instructed me to stop vehicle immediately. Car is currently at dealership and inoperable. Look up ODI 11623347 at NHTSA ↗ ODI 11624475 I started my car and after a minute I received a warning saying to check my electrical system and safely pull over. After 5 minutes of trying to drive to the dealership the car suddenly slowed down to a max speed of 27mph and then shortly after slowed to a stop and turned off. The car would not turn on and eventually the 12v battery died. I tried to jump the car but the 12v would not stay charged long enough to put the vehicle into drive. It appears the ICCU is not working and cannot keep the 12v charged to make the car function . Look up ODI 11624475 at NHTSA ↗ ODI 11625222 My new 2023 IONIQ 5 became inoperable on 3 occasions when it completely lost power. This situation unquestionably impaired my safety on the first occurrence of power failure that happened without warning while I was driving; fortunately, I was able to coast to the side of the road without incident. In my repair visits to Hyundai dealers, the integrated charging control unit (ICCU) updated (twice) and the depleted 12-volt battery was charged. Repair visits resulted in loss of use of my car for a total of 31 days while it was in service. The 1… Look up ODI 11625222 at NHTSA ↗
2024-12	4	None	ODI 11632322 We were driving our vehicle in a parking lot while on vacation and we got an error message “check electric vehicle system”. It then displayed the error message “stop safely and check power supply”. Four months ago, we had the same problem and had our 12 volt battery replaced and our ICCU updated. Our vehicle lost power while we were driving. We were able to drive the car safely to a hotel. But the ICCU needs to be replaced. Look up ODI 11632322 at NHTSA ↗ ODI 11632777 I was driving the car 70 miles per hour in a highway. Car suddenly stopped and only go 5 mph. I was lucky no car behind me. If not I could be death today. I brought it to service and ICCU unit failed which is happened almost all Hyundai IONIQ 5. They replaced it with same ICCU and it will happen again. I think they want me to make an accident next time. This car is not safe to drive with this charging unit. Look up ODI 11632777 at NHTSA ↗ ODI 11632825 While driving on a 45 mph speed limit road, there was a "pop" noise and then alarms on the dash display that power was limited and stop the car. The car's speed was severely limited to about 10 mph for a few seconds while I pulled the car over, and then the car died. Everything was electrically dead. I couldn't even turn on the hazard lights or lock or unlock the car. I took a video of the dash display rapidly alternating between two alarm messages, "12V battery storage low. Stop safely." and "power limited." This website wouldn't let me u… Look up ODI 11632825 at NHTSA ↗
2025-01	11	None	ODI 11633547 Several days ago, the twelve volt battery on my car was replaced because the car just suddenly died overnight while sitting in my garage. They told me that the battery needed to be replaced when I went to the dealer. They replaced it and now less than a week later, I was driving on the highway and suddenly the car Slowed to no more than 27 miles an hour with warnings about the electrical system not working and a problem with the battery. I had to put my flashers on while I was driving down the highway until I was able to pull off and have the c… Look up ODI 11633547 at NHTSA ↗ ODI 11633557 The rear video camera fails intermittently. It works sometimes and doesn't at times. The same with the rear cross traffic warning and pedestrian warning. I've taken my car to the dealer service center but they claim to not being able to reproduce the issue. I know the issue still exists since my husband hit a parked car while backing out of a driveway since there was no alert provided and the rear camera did not work. Look up ODI 11633557 at NHTSA ↗ ODI 11634173 The car has had multiple recalls for the ICCU failure. I have brought the car in been 3 times. Will go in again this week . The recall remedy never fixes the issue. The car works for a few weeks then the same issue happens again .Unable to start the car or drive . Has been going on since June 2024. Look up ODI 11634173 at NHTSA ↗
2025-02	14	None	ODI 11640219 I was pulling into my driveway and I heard a "clunk" and then an error appeared on the dashboard saying "Check electric vehicle system." My 12V battery then died. After recharging the 12V battery with an external charger, the "Check electric vehicle system" message came up again when I started the car, and I could only drive a block or so before another message on the dashboard said "Stop vehicle and check power supply." I had the vehicle towed to a Hyundai dealer where it is waiting for them to diagnose the problem. I had all of the ICCU s… Look up ODI 11640219 at NHTSA ↗ ODI 11640302 There is a known issue with the ICCU fuse. Mine blew this morning while driving and vehicle went into limp mode. Max speed is 20 mph and this is not safe on the highway. Vehicle completely died because the 12V can’t be charged with the blown fuse. Look up ODI 11640302 at NHTSA ↗ ODI 11640303 Condensation builds in front of the camera. The car starts jerking all over the road with no warning. There is no error other than noticing that the car cannot keep itself in the lane. When trying to disable the features, they get turned back on automatically. Look up ODI 11640303 at NHTSA ↗
2025-03	25	None	ODI 11645735 On [XXX], I was pulling into my driveway when I heard a loud “clunk” and an error message came up on the dashboard saying “Check Electric Vehicle System.” I checked the 12V battery which was at 11.9 volts, so I first tried charging it with an external battery charger. However, the error message still came up, and when I tried driving on my street it was limited to 25 miles per hour, and eventually I got the error “Stop vehicle and check power supply” and the car slowed to a crawl. There was no warning prior to the failure. I had the latest … Look up ODI 11645735 at NHTSA ↗ ODI 11645852 ICCU failure resulted in a loud pop and then loss of most power. Was still able to move the car but was limited to ~22 miles per hour. Had to be towed to the dealer. Tow and service from the dealer is pending, but my understanding from talking to service is that this is a relatively common issue and will require replacement of the ICCU unit. The car has had multiple recalls to attempt to address this issue preemptively including a little over a month ago. There were no issues reported at that the time of those recall services. Incident o… Look up ODI 11645852 at NHTSA ↗ ODI 11645878 While driving my car in a high traffic area, it stopped working. Completely stopped. It would not accelerate whatsoever and I was forced to stop on this busy street, luckily right past an intersection. This is a known problem with this vehicle. Yes there is a recall on the car but getting scheduled to have the recall done has been a very long process with me being told it would be months to fit me in. Look up ODI 11645878 at NHTSA ↗
2025-04	16	None	ODI 11652034 My electric car lost power while driving with no warning. It came to a stop in the middle of the road and a message came on the screen that said "Stop vehicle and check power supply". There was no advanced warning and I had to have the vehicle towed to the dealer. Upon inspection by the dealer I was told the ICCU unit failed and needed to be replaced. The dealer stated the the part was on backorder and there was no ETA for the part. Thankfully I was not driving on the freeway or I may not have been able to get the car to the shoulder. It … Look up ODI 11652034 at NHTSA ↗ ODI 11652057 My Ioniq 5 has encountered the renowned "ICCU" failure -- 35k miles in, 2.5-3yrs of ownership. I had a loud 'pop' noise behind my driver seat occur and then my vehicle went into limp mode. The ICCU failure is confirmed by the dealer, but the part is on massive backorder nationwide... Look up ODI 11652057 at NHTSA ↗ ODI 11652162 Was driving in Bellevue, WA leaving a parking lot. Heard a "pop" sound, and immediately had a "Check Electrical System" warning come up on the dash. From previous experience in 2024, was aware this requires immediate dealer inspection, so started driving to the dealer 6 miles away. After less than a mile, lost most power but was able to drive slowly into an office parking lot. Called Hyundai Roadside Assistance who sent a flat bed tow truck to transport the car to the dealer. ICCU was replaced in May 2024 after similar symptoms. The current IC… Look up ODI 11652162 at NHTSA ↗
2025-05	11	None	ODI 11659280 One month ago, my car experienced an failure and the warnings on the dash reported to check the electrical supply and then to stop driving the car immediately. I had it towed to a dealership who reported the ICCU failed and it'd take 1-2 weeks to get replacement parts and repair. A month later, I was just told the part is on indefinite back-order and they have no ETA when a replacement part will be available. Hyundai is selling an unsafe vehicle without that can die on the road and have no way to fix the issue. Google "Hyundai ICCU failure"… Look up ODI 11659280 at NHTSA ↗ ODI 11659542 ICCU failed for a second time and needed to be replaced. This happened within 24 hours of the initial replacement. There is a major problem with this part. Car was parked in my garage charging when the failure occured. Look up ODI 11659542 at NHTSA ↗ ODI 11659859 Was driving on highway and started receiving error messages for "check electrical system". Car speed dropped to max of 45mph while actively on a highway. Was able to pull off an exit but car needed a 55 mile tow to the closest dealer. Dealer has identified that the ICCU needs to be replaced but has no timeline as the item is on back order. Car is model year 2023, purchased in February of 2023 and has 22,000 miles on it. Look up ODI 11659859 at NHTSA ↗
2025-06	10	None	ODI 11664301 Vehicle warning alarm came on with message to immediately pull over and check power supply. Towed car to dealer where ICCU and fuse were replaced. This after 1-2 recalls were completed. Look up ODI 11664301 at NHTSA ↗ ODI 11665583 The ICCU failed while I was driving on the interstate, resulting in a loss of power. The car had to be towed. I waited 2 hours on the side of the freeway. Look up ODI 11665583 at NHTSA ↗ ODI 11665669 ICCU failure. Car is held by Hyundai dealership for over 4 weeks, waiting for replacement part from Hyundai. Need car now. Recalls were announced in South Korea by Hyundai Group for the same part creating safety and reliability concerns for American owners. Look up ODI 11665669 at NHTSA ↗
2025-07	3	None	ODI 11670677 When i was out driving with my little daughter, in the middle of the road, the car showed a warning of “check electric system”. The car was very slow and went into limp mode. I had to quickly park at a shoulder. Called roadside assistance, they sent a tow truck within 40 mns, the car was completley dead when they arrived. They had to send another tow truck that arrived after another 35 mns. I had to wait in the heat with my little daughter till they transferred us to the dealer , the repair for the iccu failure took 2 weeks. Now i am very scare… Look up ODI 11670677 at NHTSA ↗ ODI 11671632 Component or System Involved: High-voltage battery system , fault code P1AA700. The vehicle is currently located at an authorized Hyundai dealership and available for inspection upon request. Safety Risk: The vehicle became undriveable due to a potential high-voltage battery failure, posing a significant risk of electrical hazard or loss of propulsion. I was advised by the dealership not to drive or retrieve the vehicle due to safety concerns. As the sole user of the vehicle in a household with children and daily transportation needs, this cre… Look up ODI 11671632 at NHTSA ↗ ODI 11672509 The Integrated Charge Control Unit failed despite having all related recall repairs/actions implemented. Failure occurred while pulling into a parking place after completing level 2 charging to 80%. The failure has not yet been confirmed by the dealer, but all common symptoms match this failure including hearing a pop sound from the rear of the vehicle followed by “Check Electrical System” indication and limited distance low power, low speed mode. Had this happened while driving at highway speed, the sudden loss in power and speed could have be… Look up ODI 11672509 at NHTSA ↗
2025-08	0	None	No examples available for this selection.
2025-09	2	None	ODI 11686415 The car would not start when start button was pressed. Warning on the dash said 12v battery critically low. This happened on three different occasions. After jump starting the car, everything works as normal. I am able to turn off and turn on again as expected. 12v battery was tested and seems to be fine. Even the OBD2 readings show battery as working correctly. There seems to be a software glitch that makes the car think that the 12v battery is low. The high voltage battery was charged to above 70 at least on all three occasions. Now I ca… Look up ODI 11686415 at NHTSA ↗ ODI 11687016 Had all previous open recalls for iccu performed. No previous warning in car. Driving unto free way. Loud noise like a tire pop. 12 volt low power warning on dash screen. Car began to lose power. Picture of a turtle shows up. Low power warning. Car lost power within 10 seconds. And couldn't accelerate. Extremely dangerous. Once completely stopped the car turned off and couldn't start again. Was able to get car to turn on with jumper cables by tow truck. But couldn't get to "start" engine. Dealership says the 12 volt battery and iccu need… Look up ODI 11687016 at NHTSA ↗
2025-10	7	None	ODI 11692008 The ICCU, which is an electrical component that charges the 12 volt battery, failed. As a result the power drained completely and the car shut down. This is a safety issue because it happened while driving and my husband just barely had time to get the car over to the side of the road. It has also been know to happen to cars of this model while driving on a highway, which is obviously very dangerous. The problem has been confirmed by a dealer - Gary Rome Hyundai in Holyoke MA. They ordered us a new ICCU, which took about a month to get. Ord… Look up ODI 11692008 at NHTSA ↗ ODI 11692395 The car stopped trickle charging even though it wasn't at 100%. When I turned it on, there was a warning message indicating an electrical failure. I called the dealership and they said it was unsafe to drive it the 2-3 miles to the dealership so it had to be towed. Once it was diagnosed, the dealership told me the ICCU had failed. This is a known defect in this car that for some reason has not been resolved with the previous recalls, and the replacement units that are installed are just as prone to failure as the original. It is expected that I… Look up ODI 11692395 at NHTSA ↗ ODI 11692944 Car won't charge on Level 1 charging; it popped the GFCI in my garage and now no longer charges on level 1 (regular slow AC charging). Look up ODI 11692944 at NHTSA ↗
2025-11	5	None	ODI 11697455 I suddenly received errors that my sensors weren’t working, and I can no longer use my cruise control. The car has less than 60,000 miles so it still has the full bumper to bumper warranty. I have never had a collision. So I took it in to the dealer and they said the camera was mis-aligned and is not covered under warranty. It should be covered as I’ve never had a collision. Based on my online research, many people with Hyundai Ioniq 5s have experienced this same issue at no fault of their own, so it is a systemic problem. I took the vehicle to… Look up ODI 11697455 at NHTSA ↗ ODI 11700370 ICCU failure, confirmed by dealer. Vehicle was parked in garage connected to charger. The ICCU fuse blew, and the house breaker was tripped. The vehicle failure also ruined the Grizzl-E EVSE (charger). Look up ODI 11700370 at NHTSA ↗ ODI 11700677 Several times now the "Check Driver Assistance System" and "Check Lane Assist System" have come on and stayed on. I brought the car dealership, and they fixed it--but only temporarily--the problem recurs within a few days of the fix. All of the sensor cameras are clean. I have read that a weak 12-volt battery can cause this problem, but the car has only 28k miles on it, so the battery should not be weak yet. I will bring the car back to the dealer (again) and have them check the 12-volt battery strength. But I am at the point where the "check … Look up ODI 11700677 at NHTSA ↗
2025-12	13	None	ODI 11702310 12 volt battery keeps dying. I have had the car for 2.3 years and am now on my 4th 12 volt battery. Look up ODI 11702310 at NHTSA ↗ ODI 11702826 The car was fully charged and all of a sudden displayed a limited power warning and stopped driving completely. We were stuck on a road and had to get a tow truck. The tow truck was able to get power to the battery to drive it up on the bed. It was fully dead -couldn’t even unlock the doors. It’s been at Hyundai for 3 days and they are replacing the ICCU fuse. From what I read this is a very common issue Look up ODI 11702826 at NHTSA ↗ ODI 11703048 While driving on the freeway I heard a pop and a saw a warning notification on the dashboard to check the vehicles electrical system. This was followed by a warning that power was limited which resulted it the vehicle speed decreasing to 30mph, and finally a notice to stop the vehicle immediately. All of this occurred in about 5 minutes time. Thankfully, I was able to pull over to the side of the road without an accident. After this the vehicle became inoperable including hazard flashers. I had to wait on the side of the freeway for about an ho… Look up ODI 11703048 at NHTSA ↗
2026-01	30	None	ODI 11708208 Our 2023 Hyundai Ioniq 5 had the ICCU software update recall and subsequent complete failure of the ICCU, which was repaired. Yesterday the car again warned us of the 12v system failure and rendered it not only undrivable and unstartable, but also unlockable in the public parking area where it still sits awaiting a tow to the dealer tomorrow (they are closed on New Years Day. This is the second time the ICCU has failed, rendering the car totally inoperable and in this case stranding my wife in freezing cold. Look up ODI 11708208 at NHTSA ↗ ODI 11708336 · 16,000 mi The contact owns a 2023 Hyundai Ioniq 5. The contact stated that while driving 4 MPH, the vehicle lost power and stalled a mile from the residence. The message "Check Electrical System" was displayed. The hazard light was activated but quickly became inoperable. The contact called AAA towing, where a power booster was attached to the vehicle, and the vehicle was restarted. The contact was able to drive back to the residence. The AAA driver indicated that he had towed eight other similar vehicles to the same local dealer. The vehicle was towed… Look up ODI 11708336 at NHTSA ↗ ODI 11708404 I was traveling 70mph on Interstate 70 when I heard a loud “pop” sound and the car immediately slowed down to 20mph in heavy traffic. The care then would not go over 20mph.The car was charged at home the night prior. On the dash was the “stop vehicle and check power supply” warning. This is the very common ICCU issues known to plague the Hyundai EV fleet. This is very dangerous when your are in heavy interstate traffic going at a high rate of speed. Look up ODI 11708404 at NHTSA ↗
2026-02	39	None	ODI 11714820 twice this car has has experienced iccu failures. both time the car was on the road traveling when electrical system failure warning was alarm. last incident had to stop along road and towed to hyundai shop Look up ODI 11714820 at NHTSA ↗ ODI 11714844 The 12 V battery failed within two years of the delivery of the car. I believe this is due to the design of the charging unit within it as many other others report the same problem. Look up ODI 11714844 at NHTSA ↗ ODI 11714941 My 2023 Hyundai Ioniq 5 lost all power and stopped in the middle of a busy road. I had no power even when I pressed the gas. Nothing in the car worked, including the hazard lights, which made it even more dangerous as cars were speeding past me. I was finally able to call the police to come help and they set up a safe area. However, I was put in an unsafe situation while I waited for assistance from the police. In addition, there was no way to put the car in neutral once the power was off (at least I couldn't find a button or a switch to do tha… Look up ODI 11714941 at NHTSA ↗
2026-03	25	None	ODI 11721448 ICCU failed. Look up ODI 11721448 at NHTSA ↗ ODI 11721603 My wife was driving our Ioniq 5 on the freeway. She received a message on the dash about the electrical system (probably ICCU failure), and then the car limited itself ("turtle mode") so that the max speed was 20mph. A minute or two later it slowed down even further to 10mph. She was able to get off the freeway safely. Look up ODI 11721603 at NHTSA ↗ ODI 11721884 Having the same ICCU Failure that all other Ioniq 5 owners have. On February 26th, I was heading to work when I heard a pop and car displayed warning lights saying check EV system and stop safely. Car was limped home and towed to dealer. Was told fix will take a month. Look up ODI 11721884 at NHTSA ↗
2026-04	13	None	ODI 11728697 On Mar 29th, I got a 12v battery low voltage warning sign at 4pm. Jumpstarted the car and drove back to the home. On Mar 30th, car would not start so I had it towed to Downey Hyundai by roadside assistance. On Mar 30th, 12:41pm dealer confirmed that the it will need an "ICCU" and have ordered the part, but there are no loaners and no ETA for the part at this time. Problem has been reproduced and confirmed by dealer. There were no other warning signs prior to the failure. Look up ODI 11728697 at NHTSA ↗ ODI 11728740 I am writing to notify you of an Integrated Charging Control Unit (ICCU) failure on my 2023 Hyundai Ioniq 5, purchased in October of 2023. While driving home on March 4 2026, the dashboard displayed the warning "Check vehicle electrical system," and then a "pull over safely" warning. I had to leave the vehicle in a parking lot and walk home. It was towed to a dealer on March 5, 2026 to diagnose and repair the problem. The car has just under 17000 miles on it. I was told the dealer was swamped with Ioniqs with this problem and had no ETA for par… Look up ODI 11728740 at NHTSA ↗ ODI 11728787 Failure of Integrated Charge Control Unit (ICCU). Vehicle stopped charging 12V service battery from main high voltage battery. Displayed "Check Electric Vehicle System" followed by "Stop vehicle and check power supply". Vehicle to operate normally though Cruise Control stopped working. Continued to drive the few miles to our home. Once home checked service battery with battery monitor. Showed 12.1V and did not show battery being charged with vehicle ON (Ready) or OFF. Had vehicle towed to Hyundai service facility where the ICCU failure was co… Look up ODI 11728787 at NHTSA ↗
2026-05	3	None	ODI 11738416 The ICCU died a second time Look up ODI 11738416 at NHTSA ↗ ODI 11738922 The Integrated Charging Control Unit (ICCU) failed on my 2023 Hyundai Ioniq 5. The vehicle stopped charging prematurely overnight via AC Level 2 charging and then refused to charge again at all. The ICCU is responsible for maintaining the 12V battery by topping it up during normal operation. No warning or check engine light came on, I was only made aware when I attempted L2 charging and the car would refuse to take the charge. I understand that with a failed ICCU, if I'm unaware of the failure (e.g., relies solely on DC fast charging which bypa… Look up ODI 11738922 at NHTSA ↗ ODI 11739646 Car indicated 12v battery was critically low and that I should stop safely. I was just starting it in a parking lot. This is a classic ICCU failure and the car is up to date on all recall updates. The car requires manual key unlocking for outside access at this point, and the rear hatch is only unlockable using the manual release mechanism which is recessed into the rear hatch and needs the key. The back two doors cannot be opened at all, from either direction and the handles don't work when the electrical system has failed and the child lo… Look up ODI 11739646 at NHTSA ↗
2026-06	4	None	ODI 11741290 All symptoms of a 2nd iccu failure. Pop noise heard. Warning lights came on 12v drained, vehicle towed to nearest dealer. Look up ODI 11741290 at NHTSA ↗ ODI 11743216 OnXXX, as we approached what I call the 6 o’clock position of a round-about in [XXX], we had braked almost to a full stop (0-5 mph) to wait on the car ahead of us to enter the round-about when we felt increasing movement. Despite braking, to wait on that car, our car with increasing speed started shoving that car into the circle. Fortunately, he was able to drive away from us, but that car had been damaged on the back and right side. With that obstacle out of the way, our car rapidly and exponentially increased speed - all while we were full… Look up ODI 11743216 at NHTSA ↗ ODI 11745637 1. What component failed, and is it available for inspection? The Integrated Charging Control Unit (ICCU) failed. The vehicle is currently at the dealer's service center, so the failed component is available for inspection upon request. 2. How was your safety or others' safety put at risk? After parking and re-entering the vehicle following a grocery stop, the vehicle displayed "Check Vehicle Electrical System" followed by "Check Vehicle Power Supply" warnings. This occurred without warning while the vehicle was in normal use, and the vehicl… Look up ODI 11745637 at NHTSA ↗
2026-07	6	26V432000	ODI 11748381 The ioniq 5 highway driving assist, which steers the car and keeps it centered in the lane, will disengage without clear warning - the small green steering wheel icon (which is at the top of the dash cluster) simply becomes grey and blinks, but there's no audible chime to indicate that the car has disengaged the steering assist. I have had multiple times on the highway where it disengaged and I don't notice (because I am looking at the road, not the dash) and one time on the highway it disengaged during a turn and hit the rumble strip, causing … Look up ODI 11748381 at NHTSA ↗ ODI 11748404 Rear hatch window spontaneously shattered for no apparent reason. Car was parked in a Florida parking lot, no use of rear hatch and no use of rear defroster. I understand there is a potential class action lawsuit for the Ioniq 5 model years 2022-2025 for this problem. Look up ODI 11748404 at NHTSA ↗ ODI 11749330 · 47,000 mi The contact owns a 2023 Hyundai Ioniq 5. The contact stated that while driving at higher speeds occasionally, the vehicle suddenly lost motive power. The "Smart Smooth Cruise Control Conditions Not Met" warning message was displayed on the instrument panel. The contact restarted the vehicle as a temporary fix; however, the failure recurred. The vehicle was taken to a local dealer where it was diagnosed with an unknown electrical failure. The vehicle was repaired; however, the failure recurred. The vehicle was taken back to the same local dealer… Look up ODI 11749330 at NHTSA ↗
2026-08	2	None	ODI 11755141 We are reporting a suspected thermal runaway incident involving our recently purchased used 2023 Hyundai Ioniq 5 and have significant concerns regarding the vehicle's safety. Vehicle Information * Purchased XXX, 36,662 miles * Clean inspection and no accidents per Carfax Incident Timeline – XXX Between 6:00 and 6:30 PM, while traveling northbound on [XXX] just past the [XXX] exit in [XXX], the vehicle struck a white piece of road debris that appeared flat, similar to Styrofoam (video available). There was no immediate loss of vehicle … Look up ODI 11755141 at NHTSA ↗ ODI 11756423 · 4,000 mi The contact owns a 2023 Hyundai Ioniq 5. The contact stated that while driving on the freeway, the vehicle shut off unexpectedly. The vehicle was coasted to the side of the road and parked. Moments later, the vehicle was restarted, and the vehicle drove normally. The contact stated that the failure had reoccurred on several occasions, and the vehicle was taken to the dealer each time, but the cause of the failure was not yet determined. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 4,000. Look up ODI 11756423 at NHTSA ↗
2026-09	2	None	ODI 11762120 ICCU failure. Car went into limp mode then towed to dealership. Look up ODI 11762120 at NHTSA ↗ ODI 11767563 Vehicle was involved in a double fatal. After viewing of dashcam video I suspect a malfunction of the vehicle may have occurred. The video appears to show the vehicle continuously accelerating despite the sound of what may be the driver attempting to repeatedly mash on the brakes. EDR records do not coincide with the dashcam video. Look up ODI 11767563 at NHTSA ↗
2026-10 (partial)	0	None	No examples available for this selection.

Emerging complaint spikes

Complete months in the latest six months with at least 10 complaints, at least twice the preceding 12-month average, and at least three square-root deviations above that average.

This is a descriptive screening rule, not a statistical defect finding. Publicity and reporting changes can increase submissions.

No complete months meet the spike thresholds for this selection.

Equal-age model-year comparison

Model-wide cumulative reports during the first three or five calendar years, starting with the model year (age 0). Only fully elapsed windows are compared.

Observation windowFirst model yearSecond model year

2022: 242 complaints · 2023: 293 complaints

Equal observation windows
Model year	Through age 0	Through age 1	Through age 2
2022	24	181	242
2023	83	157	293

Date coverage across each selected cohort

Date basis for all complaints in selected model years
Year	Incident dates used	Filing date fallbacks	Excluded dates
2022	406	0	0
2023	385	0	2

Incident date is preferred when valid and no later than filing; otherwise filing date is used. Model year approximates age. Equal observation time does not adjust for sales, distance driven or reporting delays. One complaint linked to multiple model years can appear in each cohort.

Components reported together

Each cell counts unique complaints naming both components. Open a nonzero cell for examples.

Component co-occurrence matrix
Component	Electrical System	Power Train	Fuel/Propulsion System	Unknown Or Other	Engine	Service Brakes	Vehicle Speed Control	Forward Collision Avoidance: Adaptive Cruise Control
Electrical System	—	50 ODI 11528928 Occasionally, the vehicle sometimes doesn't start and allow me to engage to Drive gear from being turned off/Parked. I sometimes have to turn the car off and back on 1-2 times for the car to start like normal and allow me to select drive or reverse. Additionally, I have never been able to successfully sync my vehicle with my hyundai bluelink account despite efforts to troubleshoot with Bluelink representatives. Look up ODI 11528928 at NHTSA ↗ ODI 11571493 I heard a pop from the rear of the car and warnings came up on the dash. The vehicle was power limited and needed to be towed to the dealer. It was diagnosed as an ICCU failure and blown fuse. This was the problem supposedly addressed in Hyundai TSB 997 (NHTSA ID Number: 10240086). That service was performed on the vehicle in September 2023. We were lucky the incident occurred on a city street and not on a freeway or rural highway where the sudden loss of power could have been very dangerous. The software fix applied under Hyundai’s TSB clear… Look up ODI 11571493 at NHTSA ↗ ODI 11575959 The vehicle made a loud popping noise and lost motive power. Dashboard lit up with battery symbol and said to check electric vehicle system. Dealer service is certain it is an ICCU failure. The vehicle had the software update to “fix” the ICCU issue thousands of miles ago. Look up ODI 11575959 at NHTSA ↗	53 ODI 11527682 2023 Hyundai Ioniq 5 (SEL, AWD) has bad ICCU (intergrated charging control unit). Will only charge at DC chargers reliably, level 2 or level 1 chargers will only work intermittently. Has been in the shop 2 weeks with no estimated repair date as the ICCU is on backorder. This issue is affecting a lot of Hyundai/KIA/Genesis customers who's vehicles share the same platform. The dealer won't even say where I am in line to receive the ICCU vs. everyone else in North America. This is really unacceptable for a car I paid almost $60,000 for. Look up ODI 11527682 at NHTSA ↗ ODI 11527720 We purchased our 2023 Ioniq5 approximately 7 months ago. We saw an article in the newspaper about the 2022 Ioniq losing power while driving. That has happened to us 3 times in the last several months so it is not strictly the 2022 model. One time was particularly scary as I was entering a busy freeway the car lost power and as much as I pushed on the pedal I could not go more than 20mph. This happened for about 15-30 seconds then finally accelerated. My husband said he has experienced the same problem with this vehicle on 3 different occasions.… Look up ODI 11527720 at NHTSA ↗ ODI 11527776 The charging system in the 2023 Ioniq 5 has multiple issues with connectivity and charging above a certain threshold. When charging at home using an electrician certified install by Merit and a county approved installation and Emporia EVSE 48A charger, the car prompts with a message that reads "Electric Vehicle Charge Alarm was processed. Your vehicle is not charging because of a connection failure. Possible reasons include: blackout, payment incompletion, charging stop button enabled." This has only recently started happening with the temperat… Look up ODI 11527776 at NHTSA ↗	14 ODI 11528341 Twice this week while charging my Ionic 5 the charging stops before it is completely charged to the set point. Once the set point was at 80% and once at 100%. Both times the charging stopped and I received the message below. None of the reasons listed in message was a cause of the stopping. I have called my dealer and they are checking w/service dept to see if I need a software update. I am waiting to hear back but there is obviously something wrong with the rate of charge. I am using a Jukebox home charger. Look up ODI 11528341 at NHTSA ↗ ODI 11634173 The car has had multiple recalls for the ICCU failure. I have brought the car in been 3 times. Will go in again this week . The recall remedy never fixes the issue. The car works for a few weeks then the same issue happens again .Unable to start the car or drive . Has been going on since June 2024. Look up ODI 11634173 at NHTSA ↗ ODI 11647491 ICCU ASSY and Fuse had to be replaced as well as the 12 volt battery which failed a few weeks after. The car lost power on a main road 2/3/25 and we were just able to get into a parking lot. The message to check power supply came on and we lost power immediately. The 12 volt battery failed when I went to pick the car up from the dealership after they worked on the bluelink settings that had to be reconfigured a couple weeks later 2/25/25. I was lucky that I didn't have to be towed that time. I had just got into the car to leave and the wa… Look up ODI 11647491 at NHTSA ↗	31 ODI 11538261 While driving on the highway, after about 45 minutes, the electric vehicle goes into Turtle power-limited mode. The vehicle instantly reduces in speed from 70mph to as low as 35 - 45 mph. There are no warning lights or sounds. If you immediately stop the car and let it sit, it will work again temporarily but after 30 - 40 more min or less of driving, it will again go into turtle mode. Additionally, acceleration is non-existent when its power is limited, inhibiting the ability to safely drive as required to pull over or across intersections.… Look up ODI 11538261 at NHTSA ↗ ODI 11544442 Rear electric motor overheating on highway and motor shuts off only allowing front motor to work but acceleration is near nothing and is extremely dangerous. No codes or warnings pop up was told by friends with other ioniqs that it's a electric motor oil pump that malfunctions but hyundai refuses to solution ND realize that there is a problem with motor malfunction Look up ODI 11544442 at NHTSA ↗ ODI 11548051 9/11 Saturday lease deal agreed 9/13 car picked up 9/23 Air conditioning stopped working and car throws a warning message requesting immediate service. 9/25 Parts required to fix the problem not available in the US or Canadian Hyundai Parts inventory and dealer does not know when they will get the parts. 10/3 Dealer advises no update on parts. Hyundai Customer Care notified today and is investigating. From what I can determine, this is the dreaded ICCU issue which plagued the 2022 Ioniq 5. Look up ODI 11548051 at NHTSA ↗	7 ODI 11511276 When using i-Pedal (one-pedal driving) mode in this vehicle, it can decelerate at a very fast rate but does not illuminate the brake lights unless the driver’s foot is completely off the pedal. For example, I can be driving 60mph and decelerate to ~2mph as quickly as other drivers coming to a complete stop, but my brake lights will not illuminate until my foot is completely removed from the pedal. This is contradictory to the way one-pedal driving works, since coming to a smooth and slow stop requires that you slowly lift off the accelera… Look up ODI 11511276 at NHTSA ↗ ODI 11524188 The Ioniq 5 has a braking system that does not engage the brake lights on deceleration when in certain regenerative braking settings. This is dangerous as the car will quickly decelerate and not warn drivers behind you potentially causing a crash because they are unaware the Ioniq is stopping quickly. Please have Hyundai address the issue for recall. Look up ODI 11524188 at NHTSA ↗ ODI 11535750 When driving in I Pedal mode (which is the one-pedal mode), the brake lights do not light up when decelerating, and it almost caused us to be rear-ended yesterday. Drivers pull aside me and tell me my brake lights don't properly come on when I slow down. Apparently this defect was on the national news several months ago and Hyundai promised a software fix by mid-July. I was just at the Carlsbad, CA Hyundai Service Center this morning and was told they do not have a software fix for this issue. This car should officially be recalled by Hyund… Look up ODI 11535750 at NHTSA ↗	5 ODI 11633547 Several days ago, the twelve volt battery on my car was replaced because the car just suddenly died overnight while sitting in my garage. They told me that the battery needed to be replaced when I went to the dealer. They replaced it and now less than a week later, I was driving on the highway and suddenly the car Slowed to no more than 27 miles an hour with warnings about the electrical system not working and a problem with the battery. I had to put my flashers on while I was driving down the highway until I was able to pull off and have the c… Look up ODI 11633547 at NHTSA ↗ ODI 11656292 Vehicle stopped responding to all inputs while cruising on the highway. Vehicle was charged and running fine up until that point, for about 40 minutes of continuous driving. Accelerator pedal, regen paddle shifters, cruise control buttons all would not work and display was unresponsive. Vehicle slowly lost speed as if it was shifted into neutral, forcing us to pull over to the side of the road. Turning vehicle off, waiting for a minute, and turning it back on restored functions. Vehicle malfunction occurred right after a busy intersection on L… Look up ODI 11656292 at NHTSA ↗ ODI 11711755 My 2023 Hyundai Ioniq 5 suffered a sudden Integrated Charging Control Unit (ICCU) failure that put me in grave danger. As I left my workplace in the evening, I heard a “pop” sound and got the dashboard warning, “Check Electrical Vehicle System.” It was unclear what the warning meant. I had 65% charge left at that point. As I began driving, the gas pedal “stuck,” not allowing me to accelerate past 25 mph, and it felt like the car was dragging. I did not know what was happening. The “Check Electrical Vehicle System” warning returned but gave no … Look up ODI 11711755 at NHTSA ↗	1 ODI 11716969 ICCU FAILED and Hyundai service states that part is back ordered indefinitely. Has been 2 weeks with no further updates Additionally service department is unable to repair forward monitoring sensors that quit working with the smallest amount of precipitation, sometimes just from road condensation. Look up ODI 11716969 at NHTSA ↗
Power Train	50 ODI 11528928 Occasionally, the vehicle sometimes doesn't start and allow me to engage to Drive gear from being turned off/Parked. I sometimes have to turn the car off and back on 1-2 times for the car to start like normal and allow me to select drive or reverse. Additionally, I have never been able to successfully sync my vehicle with my hyundai bluelink account despite efforts to troubleshoot with Bluelink representatives. Look up ODI 11528928 at NHTSA ↗ ODI 11571493 I heard a pop from the rear of the car and warnings came up on the dash. The vehicle was power limited and needed to be towed to the dealer. It was diagnosed as an ICCU failure and blown fuse. This was the problem supposedly addressed in Hyundai TSB 997 (NHTSA ID Number: 10240086). That service was performed on the vehicle in September 2023. We were lucky the incident occurred on a city street and not on a freeway or rural highway where the sudden loss of power could have been very dangerous. The software fix applied under Hyundai’s TSB clear… Look up ODI 11571493 at NHTSA ↗ ODI 11575959 The vehicle made a loud popping noise and lost motive power. Dashboard lit up with battery symbol and said to check electric vehicle system. Dealer service is certain it is an ICCU failure. The vehicle had the software update to “fix” the ICCU issue thousands of miles ago. Look up ODI 11575959 at NHTSA ↗	—	19 ODI 11575620 The car loses power, slows down dramatically, and will not respond to the accelerator pedal. This failure has happened twice. The first time I was driving at about 40MPH on a side street when the car started slowing down with no warning and limped along at about 20MPH. I could not get it to move faster so I put my flashers on and made my way to the side of the street, pulled off of the road and shut the car off. When I restarted the car it drove normally. I reported the failure to Hyundai and they had never heard of this happening. They kept … Look up ODI 11575620 at NHTSA ↗ ODI 11575959 The vehicle made a loud popping noise and lost motive power. Dashboard lit up with battery symbol and said to check electric vehicle system. Dealer service is certain it is an ICCU failure. The vehicle had the software update to “fix” the ICCU issue thousands of miles ago. Look up ODI 11575959 at NHTSA ↗ ODI 11577517 First indication something was going awry was when attempting to charge the car. Heard normal click indicating charge had started, but no audible announcement that charging had started. Car started throwing "Check electrical system," then power plummeted and became unresponsive to accelerator, followed by "Stop car. Check electrical system," then finally something like, "Battery is being discharged by external devices."** Car had to be towed about 60 miles to nearest Hyundai EV service center. Eight days later, I got a call from service saying … Look up ODI 11577517 at NHTSA ↗	2 ODI 11647491 ICCU ASSY and Fuse had to be replaced as well as the 12 volt battery which failed a few weeks after. The car lost power on a main road 2/3/25 and we were just able to get into a parking lot. The message to check power supply came on and we lost power immediately. The 12 volt battery failed when I went to pick the car up from the dealership after they worked on the bluelink settings that had to be reconfigured a couple weeks later 2/25/25. I was lucky that I didn't have to be towed that time. I had just got into the car to leave and the wa… Look up ODI 11647491 at NHTSA ↗ ODI 11660536 2023 Hyundai Ioniq 5 ICCU failed with DTC P1A9096 which renders the vehicle in limp mode once the 12V battery drains. This is a major issue which keeps happening even after severals recalls with software updates related to this problem. When this incident happened i had gotten all the recalls and software updates available for the entire care and still it failed prematurely at 35K miles. Look up ODI 11660536 at NHTSA ↗	14 ODI 11527797 EV goes into power limited mode when on interstate when going ~50 miles while driving 70mph or more. Happened each of my 3 times on interstate of about that distance. First time was Sat 4/29 while in eco mode with 70% battery and 82°F outside, 1 hr drive 50+ miles. Second time was in normal mode Friday 5/12, 55% battery 72°F outside 1 hr drive 50+ miles. Third time was in normal mode and it happened after 42 miles. I scheduled a service after the first incident but they were only able to take it on 5/31. When this happens you lose ability to … Look up ODI 11527797 at NHTSA ↗ ODI 11550213 See uploaded photos and document. Look up ODI 11550213 at NHTSA ↗ ODI 11568130 Driving the vehicle on the highway for longer than 60 miles at highway speeds the vehicle goes into “power limited” mode and a turtle pops up on the screen. You are unable to accelerate the car and once this happens you have to leave the car off for at least 5 minutes and then not drive above 65mph again or it will keep happening over and over. After taking it to the shop Hyundai Corporate said we need to drive the car again to see if they had fixed it. Approximately 65 miles into the trip it happened again and this time I was almost rear ended… Look up ODI 11568130 at NHTSA ↗	1 ODI 11523865 When using the most aggressive braking energy recovery mode in the Hyundai Ioniq 5 (i-Pedal), the brake lights do not illuminate despite the aggressive nature of the braking provided by this mode. This mode brings the car to a full and complete stop and is very similar to commanded braking via the brake pedal. When using the L1-L3 braking energy recovery modes, the deceleration experienced by the car is more or less mild enough that it would be similar to a downshift in a manual transmission car. But the brake lights only illuminate if your fo… Look up ODI 11523865 at NHTSA ↗	4 ODI 11568130 Driving the vehicle on the highway for longer than 60 miles at highway speeds the vehicle goes into “power limited” mode and a turtle pops up on the screen. You are unable to accelerate the car and once this happens you have to leave the car off for at least 5 minutes and then not drive above 65mph again or it will keep happening over and over. After taking it to the shop Hyundai Corporate said we need to drive the car again to see if they had fixed it. Approximately 65 miles into the trip it happened again and this time I was almost rear ended… Look up ODI 11568130 at NHTSA ↗ ODI 11575620 The car loses power, slows down dramatically, and will not respond to the accelerator pedal. This failure has happened twice. The first time I was driving at about 40MPH on a side street when the car started slowing down with no warning and limped along at about 20MPH. I could not get it to move faster so I put my flashers on and made my way to the side of the street, pulled off of the road and shut the car off. When I restarted the car it drove normally. I reported the failure to Hyundai and they had never heard of this happening. They kept … Look up ODI 11575620 at NHTSA ↗ ODI 11656292 Vehicle stopped responding to all inputs while cruising on the highway. Vehicle was charged and running fine up until that point, for about 40 minutes of continuous driving. Accelerator pedal, regen paddle shifters, cruise control buttons all would not work and display was unresponsive. Vehicle slowly lost speed as if it was shifted into neutral, forcing us to pull over to the side of the road. Turning vehicle off, waiting for a minute, and turning it back on restored functions. Vehicle malfunction occurred right after a busy intersection on L… Look up ODI 11656292 at NHTSA ↗	1 ODI 11550946 Driving on freeway when adaptive cruise control turns off and had a sudden complete loss of acceleration, we had steering and brakes only. Sudden reduction of car speed in traffic could cause accident. Has only happened once in 20k miles. (no acceleration) Adaptive cruise control shuts off for no reason, but dealer couldn't replicate. In recent 8k trip we photographed warning on dash 17 + times after shut down. Dealer couldn't find any saved trouble codes for this. No warnings prior to any occurrence only after, dash turned off on acceleration … Look up ODI 11550946 at NHTSA ↗
Fuel/Propulsion System	53 ODI 11527682 2023 Hyundai Ioniq 5 (SEL, AWD) has bad ICCU (intergrated charging control unit). Will only charge at DC chargers reliably, level 2 or level 1 chargers will only work intermittently. Has been in the shop 2 weeks with no estimated repair date as the ICCU is on backorder. This issue is affecting a lot of Hyundai/KIA/Genesis customers who's vehicles share the same platform. The dealer won't even say where I am in line to receive the ICCU vs. everyone else in North America. This is really unacceptable for a car I paid almost $60,000 for. Look up ODI 11527682 at NHTSA ↗ ODI 11527720 We purchased our 2023 Ioniq5 approximately 7 months ago. We saw an article in the newspaper about the 2022 Ioniq losing power while driving. That has happened to us 3 times in the last several months so it is not strictly the 2022 model. One time was particularly scary as I was entering a busy freeway the car lost power and as much as I pushed on the pedal I could not go more than 20mph. This happened for about 15-30 seconds then finally accelerated. My husband said he has experienced the same problem with this vehicle on 3 different occasions.… Look up ODI 11527720 at NHTSA ↗ ODI 11527776 The charging system in the 2023 Ioniq 5 has multiple issues with connectivity and charging above a certain threshold. When charging at home using an electrician certified install by Merit and a county approved installation and Emporia EVSE 48A charger, the car prompts with a message that reads "Electric Vehicle Charge Alarm was processed. Your vehicle is not charging because of a connection failure. Possible reasons include: blackout, payment incompletion, charging stop button enabled." This has only recently started happening with the temperat… Look up ODI 11527776 at NHTSA ↗	19 ODI 11575620 The car loses power, slows down dramatically, and will not respond to the accelerator pedal. This failure has happened twice. The first time I was driving at about 40MPH on a side street when the car started slowing down with no warning and limped along at about 20MPH. I could not get it to move faster so I put my flashers on and made my way to the side of the street, pulled off of the road and shut the car off. When I restarted the car it drove normally. I reported the failure to Hyundai and they had never heard of this happening. They kept … Look up ODI 11575620 at NHTSA ↗ ODI 11575959 The vehicle made a loud popping noise and lost motive power. Dashboard lit up with battery symbol and said to check electric vehicle system. Dealer service is certain it is an ICCU failure. The vehicle had the software update to “fix” the ICCU issue thousands of miles ago. Look up ODI 11575959 at NHTSA ↗ ODI 11577517 First indication something was going awry was when attempting to charge the car. Heard normal click indicating charge had started, but no audible announcement that charging had started. Car started throwing "Check electrical system," then power plummeted and became unresponsive to accelerator, followed by "Stop car. Check electrical system," then finally something like, "Battery is being discharged by external devices."** Car had to be towed about 60 miles to nearest Hyundai EV service center. Eight days later, I got a call from service saying … Look up ODI 11577517 at NHTSA ↗	—	0	5 ODI 11538261 While driving on the highway, after about 45 minutes, the electric vehicle goes into Turtle power-limited mode. The vehicle instantly reduces in speed from 70mph to as low as 35 - 45 mph. There are no warning lights or sounds. If you immediately stop the car and let it sit, it will work again temporarily but after 30 - 40 more min or less of driving, it will again go into turtle mode. Additionally, acceleration is non-existent when its power is limited, inhibiting the ability to safely drive as required to pull over or across intersections.… Look up ODI 11538261 at NHTSA ↗ ODI 11544442 Rear electric motor overheating on highway and motor shuts off only allowing front motor to work but acceleration is near nothing and is extremely dangerous. No codes or warnings pop up was told by friends with other ioniqs that it's a electric motor oil pump that malfunctions but hyundai refuses to solution ND realize that there is a problem with motor malfunction Look up ODI 11544442 at NHTSA ↗ ODI 11659859 Was driving on highway and started receiving error messages for "check electrical system". Car speed dropped to max of 45mph while actively on a highway. Was able to pull off an exit but car needed a 55 mile tow to the closest dealer. Dealer has identified that the ICCU needs to be replaced but has no timeline as the item is on back order. Car is model year 2023, purchased in February of 2023 and has 22,000 miles on it. Look up ODI 11659859 at NHTSA ↗	1 ODI 11743216 OnXXX, as we approached what I call the 6 o’clock position of a round-about in [XXX], we had braked almost to a full stop (0-5 mph) to wait on the car ahead of us to enter the round-about when we felt increasing movement. Despite braking, to wait on that car, our car with increasing speed started shoving that car into the circle. Fortunately, he was able to drive away from us, but that car had been damaged on the back and right side. With that obstacle out of the way, our car rapidly and exponentially increased speed - all while we were full… Look up ODI 11743216 at NHTSA ↗	2 ODI 11575620 The car loses power, slows down dramatically, and will not respond to the accelerator pedal. This failure has happened twice. The first time I was driving at about 40MPH on a side street when the car started slowing down with no warning and limped along at about 20MPH. I could not get it to move faster so I put my flashers on and made my way to the side of the street, pulled off of the road and shut the car off. When I restarted the car it drove normally. I reported the failure to Hyundai and they had never heard of this happening. They kept … Look up ODI 11575620 at NHTSA ↗ ODI 11721603 My wife was driving our Ioniq 5 on the freeway. She received a message on the dash about the electrical system (probably ICCU failure), and then the car limited itself ("turtle mode") so that the max speed was 20mph. A minute or two later it slowed down even further to 10mph. She was able to get off the freeway safely. Look up ODI 11721603 at NHTSA ↗	1 ODI 11528988 Cruise control became disabled and then unable to accelerate when pressing down on accelerator Look up ODI 11528988 at NHTSA ↗
Unknown Or Other	14 ODI 11528341 Twice this week while charging my Ionic 5 the charging stops before it is completely charged to the set point. Once the set point was at 80% and once at 100%. Both times the charging stopped and I received the message below. None of the reasons listed in message was a cause of the stopping. I have called my dealer and they are checking w/service dept to see if I need a software update. I am waiting to hear back but there is obviously something wrong with the rate of charge. I am using a Jukebox home charger. Look up ODI 11528341 at NHTSA ↗ ODI 11634173 The car has had multiple recalls for the ICCU failure. I have brought the car in been 3 times. Will go in again this week . The recall remedy never fixes the issue. The car works for a few weeks then the same issue happens again .Unable to start the car or drive . Has been going on since June 2024. Look up ODI 11634173 at NHTSA ↗ ODI 11647491 ICCU ASSY and Fuse had to be replaced as well as the 12 volt battery which failed a few weeks after. The car lost power on a main road 2/3/25 and we were just able to get into a parking lot. The message to check power supply came on and we lost power immediately. The 12 volt battery failed when I went to pick the car up from the dealership after they worked on the bluelink settings that had to be reconfigured a couple weeks later 2/25/25. I was lucky that I didn't have to be towed that time. I had just got into the car to leave and the wa… Look up ODI 11647491 at NHTSA ↗	2 ODI 11647491 ICCU ASSY and Fuse had to be replaced as well as the 12 volt battery which failed a few weeks after. The car lost power on a main road 2/3/25 and we were just able to get into a parking lot. The message to check power supply came on and we lost power immediately. The 12 volt battery failed when I went to pick the car up from the dealership after they worked on the bluelink settings that had to be reconfigured a couple weeks later 2/25/25. I was lucky that I didn't have to be towed that time. I had just got into the car to leave and the wa… Look up ODI 11647491 at NHTSA ↗ ODI 11660536 2023 Hyundai Ioniq 5 ICCU failed with DTC P1A9096 which renders the vehicle in limp mode once the 12V battery drains. This is a major issue which keeps happening even after severals recalls with software updates related to this problem. When this incident happened i had gotten all the recalls and software updates available for the entire care and still it failed prematurely at 35K miles. Look up ODI 11660536 at NHTSA ↗	0	—	2 ODI 11634173 The car has had multiple recalls for the ICCU failure. I have brought the car in been 3 times. Will go in again this week . The recall remedy never fixes the issue. The car works for a few weeks then the same issue happens again .Unable to start the car or drive . Has been going on since June 2024. Look up ODI 11634173 at NHTSA ↗ ODI 11649688 Car had 2 recalls and a diagnostic on 3/12/25. All checked out ok. It has 9,630 miles. 3/19/25 after driving 4 times throughout the day, it would not start or unlock. Roadside assistance jumped the 12v battery and drove it home. Drove it yesterday fully charged and worked. Then it would not start this morning. Dealer advised it was unsafe and to have it towed to dealership because they had another case where person was driving same car on the highway though and the car died. Please advise what my rights are for addressing this safely. Look up ODI 11649688 at NHTSA ↗	2 ODI 11578093 I bought my Ioniq 5 in April 2023, starting in June 2023 I started having issues with the internal navigation system locating my vehicle on a different route than I was actually on. When I connect to Apple CarPlay to be able to use Google Maps or Waze, it also throws my cell phone system off and will be taken into wrong streets. Vehicle navigation also detected me driving in the wrong direction alerting me not to enter the street. I took video and photos to the dealer starting in June 2023 for a few months. They first updated the software w… Look up ODI 11578093 at NHTSA ↗ ODI 11715997 I am reporting a safety-related defect involving unintended vehicle movement on my Hyundai Ioniq 5 (Model Year 2023, SEL AWD). Observed behavior: With the vehicle in Drive and the Auto Hold function active (indicated by the white “AUTO HOLD” indicator in the instrument cluster), I brought the vehicle to a complete stop by pressing the brake pedal. Auto Hold engaged (text now green), the vehicle remained stationary, and I removed my foot from the brake. After approximately three minutes of remaining stopped, a driver-assistance system error mes… Look up ODI 11715997 at NHTSA ↗	1 ODI 11715997 I am reporting a safety-related defect involving unintended vehicle movement on my Hyundai Ioniq 5 (Model Year 2023, SEL AWD). Observed behavior: With the vehicle in Drive and the Auto Hold function active (indicated by the white “AUTO HOLD” indicator in the instrument cluster), I brought the vehicle to a complete stop by pressing the brake pedal. Auto Hold engaged (text now green), the vehicle remained stationary, and I removed my foot from the brake. After approximately three minutes of remaining stopped, a driver-assistance system error mes… Look up ODI 11715997 at NHTSA ↗	0
Engine	31 ODI 11538261 While driving on the highway, after about 45 minutes, the electric vehicle goes into Turtle power-limited mode. The vehicle instantly reduces in speed from 70mph to as low as 35 - 45 mph. There are no warning lights or sounds. If you immediately stop the car and let it sit, it will work again temporarily but after 30 - 40 more min or less of driving, it will again go into turtle mode. Additionally, acceleration is non-existent when its power is limited, inhibiting the ability to safely drive as required to pull over or across intersections.… Look up ODI 11538261 at NHTSA ↗ ODI 11544442 Rear electric motor overheating on highway and motor shuts off only allowing front motor to work but acceleration is near nothing and is extremely dangerous. No codes or warnings pop up was told by friends with other ioniqs that it's a electric motor oil pump that malfunctions but hyundai refuses to solution ND realize that there is a problem with motor malfunction Look up ODI 11544442 at NHTSA ↗ ODI 11548051 9/11 Saturday lease deal agreed 9/13 car picked up 9/23 Air conditioning stopped working and car throws a warning message requesting immediate service. 9/25 Parts required to fix the problem not available in the US or Canadian Hyundai Parts inventory and dealer does not know when they will get the parts. 10/3 Dealer advises no update on parts. Hyundai Customer Care notified today and is investigating. From what I can determine, this is the dreaded ICCU issue which plagued the 2022 Ioniq 5. Look up ODI 11548051 at NHTSA ↗	14 ODI 11527797 EV goes into power limited mode when on interstate when going ~50 miles while driving 70mph or more. Happened each of my 3 times on interstate of about that distance. First time was Sat 4/29 while in eco mode with 70% battery and 82°F outside, 1 hr drive 50+ miles. Second time was in normal mode Friday 5/12, 55% battery 72°F outside 1 hr drive 50+ miles. Third time was in normal mode and it happened after 42 miles. I scheduled a service after the first incident but they were only able to take it on 5/31. When this happens you lose ability to … Look up ODI 11527797 at NHTSA ↗ ODI 11550213 See uploaded photos and document. Look up ODI 11550213 at NHTSA ↗ ODI 11568130 Driving the vehicle on the highway for longer than 60 miles at highway speeds the vehicle goes into “power limited” mode and a turtle pops up on the screen. You are unable to accelerate the car and once this happens you have to leave the car off for at least 5 minutes and then not drive above 65mph again or it will keep happening over and over. After taking it to the shop Hyundai Corporate said we need to drive the car again to see if they had fixed it. Approximately 65 miles into the trip it happened again and this time I was almost rear ended… Look up ODI 11568130 at NHTSA ↗	5 ODI 11538261 While driving on the highway, after about 45 minutes, the electric vehicle goes into Turtle power-limited mode. The vehicle instantly reduces in speed from 70mph to as low as 35 - 45 mph. There are no warning lights or sounds. If you immediately stop the car and let it sit, it will work again temporarily but after 30 - 40 more min or less of driving, it will again go into turtle mode. Additionally, acceleration is non-existent when its power is limited, inhibiting the ability to safely drive as required to pull over or across intersections.… Look up ODI 11538261 at NHTSA ↗ ODI 11544442 Rear electric motor overheating on highway and motor shuts off only allowing front motor to work but acceleration is near nothing and is extremely dangerous. No codes or warnings pop up was told by friends with other ioniqs that it's a electric motor oil pump that malfunctions but hyundai refuses to solution ND realize that there is a problem with motor malfunction Look up ODI 11544442 at NHTSA ↗ ODI 11659859 Was driving on highway and started receiving error messages for "check electrical system". Car speed dropped to max of 45mph while actively on a highway. Was able to pull off an exit but car needed a 55 mile tow to the closest dealer. Dealer has identified that the ICCU needs to be replaced but has no timeline as the item is on back order. Car is model year 2023, purchased in February of 2023 and has 22,000 miles on it. Look up ODI 11659859 at NHTSA ↗	2 ODI 11634173 The car has had multiple recalls for the ICCU failure. I have brought the car in been 3 times. Will go in again this week . The recall remedy never fixes the issue. The car works for a few weeks then the same issue happens again .Unable to start the car or drive . Has been going on since June 2024. Look up ODI 11634173 at NHTSA ↗ ODI 11649688 Car had 2 recalls and a diagnostic on 3/12/25. All checked out ok. It has 9,630 miles. 3/19/25 after driving 4 times throughout the day, it would not start or unlock. Roadside assistance jumped the 12v battery and drove it home. Drove it yesterday fully charged and worked. Then it would not start this morning. Dealer advised it was unsafe and to have it towed to dealership because they had another case where person was driving same car on the highway though and the car died. Please advise what my rights are for addressing this safely. Look up ODI 11649688 at NHTSA ↗	—	0	2 ODI 11568130 Driving the vehicle on the highway for longer than 60 miles at highway speeds the vehicle goes into “power limited” mode and a turtle pops up on the screen. You are unable to accelerate the car and once this happens you have to leave the car off for at least 5 minutes and then not drive above 65mph again or it will keep happening over and over. After taking it to the shop Hyundai Corporate said we need to drive the car again to see if they had fixed it. Approximately 65 miles into the trip it happened again and this time I was almost rear ended… Look up ODI 11568130 at NHTSA ↗ ODI 11711755 My 2023 Hyundai Ioniq 5 suffered a sudden Integrated Charging Control Unit (ICCU) failure that put me in grave danger. As I left my workplace in the evening, I heard a “pop” sound and got the dashboard warning, “Check Electrical Vehicle System.” It was unclear what the warning meant. I had 65% charge left at that point. As I began driving, the gas pedal “stuck,” not allowing me to accelerate past 25 mph, and it felt like the car was dragging. I did not know what was happening. The “Check Electrical Vehicle System” warning returned but gave no … Look up ODI 11711755 at NHTSA ↗	0
Service Brakes	7 ODI 11511276 When using i-Pedal (one-pedal driving) mode in this vehicle, it can decelerate at a very fast rate but does not illuminate the brake lights unless the driver’s foot is completely off the pedal. For example, I can be driving 60mph and decelerate to ~2mph as quickly as other drivers coming to a complete stop, but my brake lights will not illuminate until my foot is completely removed from the pedal. This is contradictory to the way one-pedal driving works, since coming to a smooth and slow stop requires that you slowly lift off the accelera… Look up ODI 11511276 at NHTSA ↗ ODI 11524188 The Ioniq 5 has a braking system that does not engage the brake lights on deceleration when in certain regenerative braking settings. This is dangerous as the car will quickly decelerate and not warn drivers behind you potentially causing a crash because they are unaware the Ioniq is stopping quickly. Please have Hyundai address the issue for recall. Look up ODI 11524188 at NHTSA ↗ ODI 11535750 When driving in I Pedal mode (which is the one-pedal mode), the brake lights do not light up when decelerating, and it almost caused us to be rear-ended yesterday. Drivers pull aside me and tell me my brake lights don't properly come on when I slow down. Apparently this defect was on the national news several months ago and Hyundai promised a software fix by mid-July. I was just at the Carlsbad, CA Hyundai Service Center this morning and was told they do not have a software fix for this issue. This car should officially be recalled by Hyund… Look up ODI 11535750 at NHTSA ↗	1 ODI 11523865 When using the most aggressive braking energy recovery mode in the Hyundai Ioniq 5 (i-Pedal), the brake lights do not illuminate despite the aggressive nature of the braking provided by this mode. This mode brings the car to a full and complete stop and is very similar to commanded braking via the brake pedal. When using the L1-L3 braking energy recovery modes, the deceleration experienced by the car is more or less mild enough that it would be similar to a downshift in a manual transmission car. But the brake lights only illuminate if your fo… Look up ODI 11523865 at NHTSA ↗	1 ODI 11743216 OnXXX, as we approached what I call the 6 o’clock position of a round-about in [XXX], we had braked almost to a full stop (0-5 mph) to wait on the car ahead of us to enter the round-about when we felt increasing movement. Despite braking, to wait on that car, our car with increasing speed started shoving that car into the circle. Fortunately, he was able to drive away from us, but that car had been damaged on the back and right side. With that obstacle out of the way, our car rapidly and exponentially increased speed - all while we were full… Look up ODI 11743216 at NHTSA ↗	2 ODI 11578093 I bought my Ioniq 5 in April 2023, starting in June 2023 I started having issues with the internal navigation system locating my vehicle on a different route than I was actually on. When I connect to Apple CarPlay to be able to use Google Maps or Waze, it also throws my cell phone system off and will be taken into wrong streets. Vehicle navigation also detected me driving in the wrong direction alerting me not to enter the street. I took video and photos to the dealer starting in June 2023 for a few months. They first updated the software w… Look up ODI 11578093 at NHTSA ↗ ODI 11715997 I am reporting a safety-related defect involving unintended vehicle movement on my Hyundai Ioniq 5 (Model Year 2023, SEL AWD). Observed behavior: With the vehicle in Drive and the Auto Hold function active (indicated by the white “AUTO HOLD” indicator in the instrument cluster), I brought the vehicle to a complete stop by pressing the brake pedal. Auto Hold engaged (text now green), the vehicle remained stationary, and I removed my foot from the brake. After approximately three minutes of remaining stopped, a driver-assistance system error mes… Look up ODI 11715997 at NHTSA ↗	0	—	5 ODI 11524021 The Ioniq 5 when using level 2 regen, level 3 regen, and i-pedal (one pedal driving), does not turn on the break light when decelerating, even if coming to a full stop unless the driver removes their foot completely from the pedal or hits the break pedal. These driving modes allow the driver to perform regenerative breaking almost to a complete stop without turning on the break lights and warning other drivers behind you. With i-pedal specifically, the driver can 100% perform all stop and go traffic maneuvers without using the break and never… Look up ODI 11524021 at NHTSA ↗ ODI 11524271 brake lights do not come on when the car is in regenerative braking or driving mode and the driver is touching the gas pedal. Drivers following the car are not aware the car is actually braking not coasting. This is causing a rearending hazard. Mfr needs to correct issues so brake lights come on when car is in regenerative braking mode and the car is deaccellerating regardless of gas pedal activity Look up ODI 11524271 at NHTSA ↗ ODI 11594992 When parking in a supermarket parking lot I slowly approached the space while braking. As I turned left into the space and released the brake pedal to allow the car to slowly roll into the space as I always do, the car surged as if someone floored the accelerator. I veered left to avoid a head on collision with the parked car facing me and went diagonally between the right front fender of that car and the left front fender of the car parked in the space to my left. I sideswiped both sides of my car and damaged the front fenders of both cars bef… Look up ODI 11594992 at NHTSA ↗	0
Vehicle Speed Control	5 ODI 11633547 Several days ago, the twelve volt battery on my car was replaced because the car just suddenly died overnight while sitting in my garage. They told me that the battery needed to be replaced when I went to the dealer. They replaced it and now less than a week later, I was driving on the highway and suddenly the car Slowed to no more than 27 miles an hour with warnings about the electrical system not working and a problem with the battery. I had to put my flashers on while I was driving down the highway until I was able to pull off and have the c… Look up ODI 11633547 at NHTSA ↗ ODI 11656292 Vehicle stopped responding to all inputs while cruising on the highway. Vehicle was charged and running fine up until that point, for about 40 minutes of continuous driving. Accelerator pedal, regen paddle shifters, cruise control buttons all would not work and display was unresponsive. Vehicle slowly lost speed as if it was shifted into neutral, forcing us to pull over to the side of the road. Turning vehicle off, waiting for a minute, and turning it back on restored functions. Vehicle malfunction occurred right after a busy intersection on L… Look up ODI 11656292 at NHTSA ↗ ODI 11711755 My 2023 Hyundai Ioniq 5 suffered a sudden Integrated Charging Control Unit (ICCU) failure that put me in grave danger. As I left my workplace in the evening, I heard a “pop” sound and got the dashboard warning, “Check Electrical Vehicle System.” It was unclear what the warning meant. I had 65% charge left at that point. As I began driving, the gas pedal “stuck,” not allowing me to accelerate past 25 mph, and it felt like the car was dragging. I did not know what was happening. The “Check Electrical Vehicle System” warning returned but gave no … Look up ODI 11711755 at NHTSA ↗	4 ODI 11568130 Driving the vehicle on the highway for longer than 60 miles at highway speeds the vehicle goes into “power limited” mode and a turtle pops up on the screen. You are unable to accelerate the car and once this happens you have to leave the car off for at least 5 minutes and then not drive above 65mph again or it will keep happening over and over. After taking it to the shop Hyundai Corporate said we need to drive the car again to see if they had fixed it. Approximately 65 miles into the trip it happened again and this time I was almost rear ended… Look up ODI 11568130 at NHTSA ↗ ODI 11575620 The car loses power, slows down dramatically, and will not respond to the accelerator pedal. This failure has happened twice. The first time I was driving at about 40MPH on a side street when the car started slowing down with no warning and limped along at about 20MPH. I could not get it to move faster so I put my flashers on and made my way to the side of the street, pulled off of the road and shut the car off. When I restarted the car it drove normally. I reported the failure to Hyundai and they had never heard of this happening. They kept … Look up ODI 11575620 at NHTSA ↗ ODI 11656292 Vehicle stopped responding to all inputs while cruising on the highway. Vehicle was charged and running fine up until that point, for about 40 minutes of continuous driving. Accelerator pedal, regen paddle shifters, cruise control buttons all would not work and display was unresponsive. Vehicle slowly lost speed as if it was shifted into neutral, forcing us to pull over to the side of the road. Turning vehicle off, waiting for a minute, and turning it back on restored functions. Vehicle malfunction occurred right after a busy intersection on L… Look up ODI 11656292 at NHTSA ↗	2 ODI 11575620 The car loses power, slows down dramatically, and will not respond to the accelerator pedal. This failure has happened twice. The first time I was driving at about 40MPH on a side street when the car started slowing down with no warning and limped along at about 20MPH. I could not get it to move faster so I put my flashers on and made my way to the side of the street, pulled off of the road and shut the car off. When I restarted the car it drove normally. I reported the failure to Hyundai and they had never heard of this happening. They kept … Look up ODI 11575620 at NHTSA ↗ ODI 11721603 My wife was driving our Ioniq 5 on the freeway. She received a message on the dash about the electrical system (probably ICCU failure), and then the car limited itself ("turtle mode") so that the max speed was 20mph. A minute or two later it slowed down even further to 10mph. She was able to get off the freeway safely. Look up ODI 11721603 at NHTSA ↗	1 ODI 11715997 I am reporting a safety-related defect involving unintended vehicle movement on my Hyundai Ioniq 5 (Model Year 2023, SEL AWD). Observed behavior: With the vehicle in Drive and the Auto Hold function active (indicated by the white “AUTO HOLD” indicator in the instrument cluster), I brought the vehicle to a complete stop by pressing the brake pedal. Auto Hold engaged (text now green), the vehicle remained stationary, and I removed my foot from the brake. After approximately three minutes of remaining stopped, a driver-assistance system error mes… Look up ODI 11715997 at NHTSA ↗	2 ODI 11568130 Driving the vehicle on the highway for longer than 60 miles at highway speeds the vehicle goes into “power limited” mode and a turtle pops up on the screen. You are unable to accelerate the car and once this happens you have to leave the car off for at least 5 minutes and then not drive above 65mph again or it will keep happening over and over. After taking it to the shop Hyundai Corporate said we need to drive the car again to see if they had fixed it. Approximately 65 miles into the trip it happened again and this time I was almost rear ended… Look up ODI 11568130 at NHTSA ↗ ODI 11711755 My 2023 Hyundai Ioniq 5 suffered a sudden Integrated Charging Control Unit (ICCU) failure that put me in grave danger. As I left my workplace in the evening, I heard a “pop” sound and got the dashboard warning, “Check Electrical Vehicle System.” It was unclear what the warning meant. I had 65% charge left at that point. As I began driving, the gas pedal “stuck,” not allowing me to accelerate past 25 mph, and it felt like the car was dragging. I did not know what was happening. The “Check Electrical Vehicle System” warning returned but gave no … Look up ODI 11711755 at NHTSA ↗	5 ODI 11524021 The Ioniq 5 when using level 2 regen, level 3 regen, and i-pedal (one pedal driving), does not turn on the break light when decelerating, even if coming to a full stop unless the driver removes their foot completely from the pedal or hits the break pedal. These driving modes allow the driver to perform regenerative breaking almost to a complete stop without turning on the break lights and warning other drivers behind you. With i-pedal specifically, the driver can 100% perform all stop and go traffic maneuvers without using the break and never… Look up ODI 11524021 at NHTSA ↗ ODI 11524271 brake lights do not come on when the car is in regenerative braking or driving mode and the driver is touching the gas pedal. Drivers following the car are not aware the car is actually braking not coasting. This is causing a rearending hazard. Mfr needs to correct issues so brake lights come on when car is in regenerative braking mode and the car is deaccellerating regardless of gas pedal activity Look up ODI 11524271 at NHTSA ↗ ODI 11594992 When parking in a supermarket parking lot I slowly approached the space while braking. As I turned left into the space and released the brake pedal to allow the car to slowly roll into the space as I always do, the car surged as if someone floored the accelerator. I veered left to avoid a head on collision with the parked car facing me and went diagonally between the right front fender of that car and the left front fender of the car parked in the space to my left. I sideswiped both sides of my car and damaged the front fenders of both cars bef… Look up ODI 11594992 at NHTSA ↗	—	4 ODI 11527772 While driving on the interstate my 2023 Ioniq 5 SEL RWD experienced a failure with the front radar system stating that it was blocked. In reality there was nothing physically blocking the system which was verified on multiple pullovers to check the front of the vehicle. This caused the critical forward safety functions, HDA system, lane change assist functions, regeneration system, and smart cruise control to all be disabled. The car is available for inspection upon request and I have video of the car displaying the fault messages during the tr… Look up ODI 11527772 at NHTSA ↗ ODI 11539136 Driving on the highway, my car will suddenly lose power momentarily and the speed drop 3-5 mph. My accelerator is unresponsive. Then the car will accelerate quickly with a jerk to accelerate to the set speed. May occur on level ground but often occurs at the bottom of a hill. I have no control during this loss of power. Look up ODI 11539136 at NHTSA ↗ ODI 11547516 HELP! I now regret that I bought a Hyundai Ioniq 5. I hoped the recent campaign would fix my problem, but I think it is now worse. While driving my speed drops 3 to 4 miles per hour, then the car lurches forward to regain my speed. At first I thought it was when using cruise. Now the car does it on the highway even when not using cruise. When it starts dropping the speed, the accelerator is not responsive. I have to wait for the car to slow completely down before the throttle will respond. I do not notice the problem around town. It s… Look up ODI 11547516 at NHTSA ↗
Forward Collision Avoidance: Adaptive Cruise Control	1 ODI 11716969 ICCU FAILED and Hyundai service states that part is back ordered indefinitely. Has been 2 weeks with no further updates Additionally service department is unable to repair forward monitoring sensors that quit working with the smallest amount of precipitation, sometimes just from road condensation. Look up ODI 11716969 at NHTSA ↗	1 ODI 11550946 Driving on freeway when adaptive cruise control turns off and had a sudden complete loss of acceleration, we had steering and brakes only. Sudden reduction of car speed in traffic could cause accident. Has only happened once in 20k miles. (no acceleration) Adaptive cruise control shuts off for no reason, but dealer couldn't replicate. In recent 8k trip we photographed warning on dash 17 + times after shut down. Dealer couldn't find any saved trouble codes for this. No warnings prior to any occurrence only after, dash turned off on acceleration … Look up ODI 11550946 at NHTSA ↗	1 ODI 11528988 Cruise control became disabled and then unable to accelerate when pressing down on accelerator Look up ODI 11528988 at NHTSA ↗	0	0	0	4 ODI 11527772 While driving on the interstate my 2023 Ioniq 5 SEL RWD experienced a failure with the front radar system stating that it was blocked. In reality there was nothing physically blocking the system which was verified on multiple pullovers to check the front of the vehicle. This caused the critical forward safety functions, HDA system, lane change assist functions, regeneration system, and smart cruise control to all be disabled. The car is available for inspection upon request and I have video of the car displaying the fault messages during the tr… Look up ODI 11527772 at NHTSA ↗ ODI 11539136 Driving on the highway, my car will suddenly lose power momentarily and the speed drop 3-5 mph. My accelerator is unresponsive. Then the car will accelerate quickly with a jerk to accelerate to the set speed. May occur on level ground but often occurs at the bottom of a hill. I have no control during this loss of power. Look up ODI 11539136 at NHTSA ↗ ODI 11547516 HELP! I now regret that I bought a Hyundai Ioniq 5. I hoped the recent campaign would fix my problem, but I think it is now worse. While driving my speed drops 3 to 4 miles per hour, then the car lurches forward to regain my speed. At first I thought it was when using cruise. Now the car does it on the highway even when not using cruise. When it starts dropping the speed, the accelerator is not responsive. I have to wait for the car to slow completely down before the throttle will respond. I do not notice the problem around town. It s… Look up ODI 11547516 at NHTSA ↗	—

Co-reporting does not establish that one component caused another concern.

Recurring narrative patterns

Specific keyword mentions beyond broad component labels. Matching includes negations and comparisons and does not confirm a diagnosis.

Search patterns

6 patterns with matching reports.

Stalling or loss of power

41 mentions · 10.6% of complaints

Median mileage: 16,000 mi (3 usable records).

ODI 11527720

We purchased our 2023 Ioniq5 approximately 7 months ago. We saw an article in the newspaper about the 2022 Ioniq losing power while driving. That has happened to us 3 times in the last several months so it is not strictly the 2022 model. One time was particularly scary as I was entering a busy freeway the car lost power and as much as I pushed on the pedal I could not go more than 20mph. This happened for about 15-30 seconds then finally accelerated. My husband said he has experienced the same problem with this vehicle on 3 different occasions.…

Look up ODI 11527720 at NHTSA ↗

ODI 11531240

Loss of power when accelerating, Warning lights came on and off in blinking style. After losing power to zero , it would jump accelerate hard then die again.

Look up ODI 11531240 at NHTSA ↗

ODI 11539136

Look up ODI 11539136 at NHTSA ↗

Matching rule

\b(stall\w*|loss of power|lost power|engine shut\w* off)\b

Warning lights and dashboard alerts

30 mentions · 7.8% of complaints

Median mileage: 15,000 mi (5 usable records).

ODI 11509945

Look up ODI 11509945 at NHTSA ↗

ODI 11531240

Loss of power when accelerating, Warning lights came on and off in blinking style. After losing power to zero , it would jump accelerate hard then die again.

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ODI 11538261

While driving on the highway, after about 45 minutes, the electric vehicle goes into Turtle power-limited mode. The vehicle instantly reduces in speed from 70mph to as low as 35 - 45 mph. There are no warning lights or sounds. If you immediately stop the car and let it sit, it will work again temporarily but after 30 - 40 more min or less of driving, it will again go into turtle mode. Additionally, acceleration is non-existent when its power is limited, inhibiting the ability to safely drive as required to pull over or across intersections.…

Look up ODI 11538261 at NHTSA ↗

Matching rule

\b(warning light\w*|check engine|dashboard warning\w*|malfunction indicator)\b

Battery drain and no-start mentions

15 mentions · 3.9% of complaints

Median mileage: Unavailable (0 usable records).

ODI 11565081

The Ioniq 5 has a serious problem with 12 volt battery drain. Three times, I have returned from vacation and found that the 12 v battery was completely dead. This is a huge issue if a consumer cannot rely on their vehicle to start in an emergency. I called a dealer in Renton, Washington about the issue and the technician responded, "This is a common issue in these types of vehicles." I am sorry, but that is not acceptable and is a vehicle defect. With electronic doors, you cannot get into the vehicle to jump start it, if the vehicle is lo…

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ODI 11610440

The recall stated in this report says that it was incomplete, however the recall was completed by the Hyundai Dealership, the software updates were installed and the ICCU failed anyway. When the unit failed the car went into "Turtle Mode", only able to go a max of 25 mph, and the 12 volt battery drained and died.

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ODI 11635643

There was no major safety issue in this instance. My concern is this poses a severe risk if it happened while driving. The car was on and in ready to drive mode but was parked in the garage with climate control on while loading it for going to school. At somepoint between trips to the car over 20 minutes it died with no warning. Some lights behind buttons, the interior lights, and the screens were on but blank. Not a single button in the car would respond. Including hazards or opening the trunk or closing the charging port door. Lights l…

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Matching rule

Brake response concerns

9 mentions · 2.3% of complaints

Median mileage: Unavailable (0 usable records).

ODI 11523865

Look up ODI 11523865 at NHTSA ↗

ODI 11554852

I'm surprised there are no safety recalls on this vehicle given how Cruise Control operates & how close to the Cruise Control toggle switch the steering wheel is indented for hand placement at 10 a.m./2 p.m.We purchased a 2023 IONIQ 5 on 02/25/2023.When the vehicle was delivered to us we were not told that the cruise control does not disengage when the brake pedal is applied.It merely pauses.There is nothing in the owner's manual that addresses cruise control operation.In any other vehicle we have owned, including other Hyundai vehicles, cruise…

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ODI 11560959

Intermittent Electrical / Brake failure . Put vehicle in reverse . Brakes failed to stop vehicle . Vehicle has had electrical issues before . Waring lights came on for steering and tire pressure in the past . Recall then came from Hyundai for the ICCU .45 minutes before the collision, the front collision warning came on when I was stopped at an intersection with no one in front of me . I stopped the vehicle and turned the vehicle off . Turned on the vehicle and it reset the warning lights and sounds , and I continued to drive . Later wh…

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Matching rule

Hard or delayed shifting

8 mentions · 2.1% of complaints

Median mileage: Unavailable (0 usable records).

ODI 11535707

After owning and driving the 2023 Ioniq 5 for about 4 months, the car was driven from Massachusetts to Arizona. After driving across the county at 75 mph about 50 min on cruse control the car began to lurch, the speed would drop about 3 mph below the cruse control set point, then accelerate to a mile faster than the set point and then settle down to the set point. This would happen multiple times during the next 100 miles before stopping to charge. After charging and again on cruse control at 75 mph or so, the lurching would begin again. After…

Look up ODI 11535707 at NHTSA ↗

ODI 11539136

Look up ODI 11539136 at NHTSA ↗

ODI 11547516

HELP! I now regret that I bought a Hyundai Ioniq 5. I hoped the recent campaign would fix my problem, but I think it is now worse. While driving my speed drops 3 to 4 miles per hour, then the car lurches forward to regain my speed. At first I thought it was when using cruise. Now the car does it on the highway even when not using cruise. When it starts dropping the speed, the accelerator is not responsive. I have to wait for the car to slow completely down before the throttle will respond. I do not notice the problem around town. It s…

Look up ODI 11547516 at NHTSA ↗

Matching rule

Steering assistance concerns

4 mentions · 1.0% of complaints

Median mileage: Unavailable (0 usable records).

ODI 11601825

I have had my 2023 Ioniq 5 for 13-months. I have had two safety recall services performed - I understand those were ICCU software related. On [XXX] my car sounded a sudden alarm and a warning appeared saying to "STOP and Check Power Supply." I was not able to immediately pull over but found the ability to pull over within about 1/4 mile, the vehicle seemed to be losing power. It was frightening as there were many pedestrians and cyclists and I had no idea what was happening. The car was towed through AAA - we had difficulty getting it onto the …

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ODI 11643392

ICCU error, check power source error then all electrical in the vehicle went out. No power steering, no acceleration, anll screens went black, all recalls addressed.

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ODI 11738922

The Integrated Charging Control Unit (ICCU) failed on my 2023 Hyundai Ioniq 5. The vehicle stopped charging prematurely overnight via AC Level 2 charging and then refused to charge again at all. The ICCU is responsible for maintaining the 12V battery by topping it up during normal operation. No warning or check engine light came on, I was only made aware when I attempted L2 charging and the car would refuse to take the charge. I understand that with a failed ICCU, if I'm unaware of the failure (e.g., relies solely on DC fast charging which bypa…

Look up ODI 11738922 at NHTSA ↗

Matching rule

\b(power steer\w*|steering assist\w*|steering lock\w*|steering wheel lock\w*)\b