U.S. public vehicle records

Hyundai IONIQ ELECTRIC problems and owner complaints

Explore the records behind recurring owner reports.

Key facts

24 owner complaints analyzed

3 distinct recall campaigns

18,000 mi median reported failure mileage

Scope: 2017 to 2021 model years. Data updated: 2026-10-01 (October 1, 2026). 11 complaints include usable failure mileage. View data status.

This selection has limited data. It remains available for lookup but is excluded from search indexing.

Owner-reported patterns

Most common problems

Electrical System is the most frequently named component, appearing in 13 of 24 complaints (54.2%). A complaint can name multiple components.

Recurring terms in complaint narratives
Topic	Matching reports	Share of complaints
Braking behavior	8	33.3%
Electrical and battery issues	8	33.3%
Steering behavior	1	4.2%

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

Service Brakes

Vehicle Speed Control

Fuel/Propulsion System

Power Train

Steering

Electrical System:12v/24v/48v Battery

Engine

Electrical System: 13; Service Brakes: 7; Vehicle Speed Control: 5; Fuel/Propulsion System: 2; Power Train: 2; Steering: 2; Electrical System:12v/24v/48v Battery: 1; Engine: 1

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: 1; 100,000 to 149,999: 0; 150,000 and above: 0

Under 25,000 miles has the most reports with usable mileage (7). 13 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.

2018

2019

2020

2021

2022

2023

2025

2026

2018: 2; 2019: 1; 2020: 7; 2021: 5; 2022: 1; 2023: 5; 2025: 2; 2026: 1

Pattern summary

Electrical System leads the component reports. Braking behavior appears in 8 complaint narratives. Electrical and battery issues appears in 8 complaint narratives. Steering behavior appears in 1 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 11114947 · 2018-07-31 (July 31, 2018)

TL* THE CONTACT OWNS A 2017 HYUNDAI IONIQ ELECTRIC. THE CONTACT TOOK THE VEHICLE TO HYUNDAI INLAND EMPIRE (25072 REDLANDS BLVD, LOMA LINDA, CA 92354) FOR A KEY REPLACEMENT. WHEN THE CONTACT PLACED THE GEAR IN REVERSE AND ATTEMPTED TO REMOVE HIS FOOT FROM THE BRAKE PEDAL, THE VEHICLE ACCELERATED UP TO 20 MPH WHILE IN REVERSE. AS A RESULT THE VEHICLE CRASHED INTO ANOTHER VEHICLE. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE SAME DEALER WAS INFORMED ABOUT THE FAILURE, BUT THE VEHICLE WAS NOT DIAGNOSED …

Owner-reported narrative. 600 miles reported. Look up ODI 11114947 at NHTSA ↗

Owner report 11156553 · 2018-12-06 (December 6, 2018)

CAR SKIDS AND LOSES CONTROL. TRACTION CONTROL LIGHT ILLUMINATES DURING LOSS OF CONTROL. HARD BRAKING CREATES THE BRAKES TO LOCK UP. VEHICLE IS UNABLE TO EXECUTE CLIMBING INCLINED DRIVEWAYS. SEVERE SAFETY ISSUE AS ITS ESPECIALLY CONTROL LOSS DURING RAIN.

Owner-reported narrative. 18,000 miles reported. Look up ODI 11156553 at NHTSA ↗

Owner report 11310232 · 2020-02-19 (February 19, 2020)

FOR APPROX. ONE WEEK THERE WAS AN UNPLEASANT SMELL NOTICED INSIDE OF THE VEHICLE WHEN DRIVING. IT SEEMED TO BE MORE EVIDENT WHEN THE HEAT/AC SYSTEM WAS OFF AND OUTSIDE AIR WAS COMING IN THROUGH THE VENTS. AT THE END OF THE WEEK, ON THE WEEKEND THE ODOR WAS NOTICED WHEN THE CAR WAS DRIVEN HOME, AND AFTER IT GOT HOME. THE HOOD WAS OPENED AND IT WAS NOTICED THAT THE 12V AUX BATTERY WAS BLOATED ON ONE SIDE, WAS STEAMING VAPOR OUT OF ONE SIDE, AND WAS VERY HOT. THE CAR WAS POWERED OFF AND LOOKED AT AGAIN THE NEXT MORNING. THE CAR WOULD NOT OPEN AND …

Owner-reported narrative. 40,000 miles reported. Look up ODI 11310232 at NHTSA ↗

Owner report 11352398 · 2020-08-31 (August 31, 2020)

12V BATTERY HAS FAILED EVERY YEAR SINCE OWNERSHIP. THE LAST BATTERY WAS BUBBLING AND HAD A HORRIBLE ODOR.

Owner-reported narrative. 59,840 miles reported. Look up ODI 11352398 at NHTSA ↗

Owner report 11534305 · 2023-07-25 (July 25, 2023)

The steering is "sticky" causing the vehicle to zig-zag, rather than track straight, especially at highway speeds. If you take your eyes off the road for a second, the vehicle will veer into other lanes. It requires constant vigilance beyond what is required for normal driving to remian in your lane. This is a well-documented issue online involving the ball bearings and lubrication of the intermediate shaft of the steering column.

Owner-reported narrative. Look up ODI 11534305 at NHTSA ↗

Compare model years

Recalls by model year

All campaigns in the snapshot affecting each model year, including recalls announced years later.

From yearThrough year

Recall campaigns

Shared campaigns appear once in each affected model year.

2017

2018

2019

2020

2021

2017: 2; 2018: 1; 2019: 1; 2020: 1; 2021: 0

First model yearSecond model year

Year-by-year records

Hyundai IONIQ ELECTRIC model-year comparison
Model year	Complaints	Recalls	Change in recalls
2017	9	2	Not available
2018	0	1	-1
2019	6	1	0
2020	7	1	0
2021	2	0	-1

Explore the data

Vehicle analysis explorer

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

Data completeness

24 unique complaints in this selection. Analysis snapshot: 2026-10-01.

45.8%Usable mileage11 / 24 records

100.0%Valid incident date24 / 24 records

100.0%Valid filing date24 / 24 records

100.0%Ordered incident and filing dates24 / 24 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	2017	2018	2019	2020	2021
Electrical System	777.8% ODI 11156553 · 18,000 mi CAR SKIDS AND LOSES CONTROL. TRACTION CONTROL LIGHT ILLUMINATES DURING LOSS OF CONTROL. HARD BRAKING CREATES THE BRAKES TO LOCK UP. VEHICLE IS UNABLE TO EXECUTE CLIMBING INCLINED DRIVEWAYS. SEVERE SAFETY ISSUE AS ITS ESPECIALLY CONTROL LOSS DURING RAIN. Look up ODI 11156553 at NHTSA ↗	0Unavailable No examples available for this selection.	466.7% ODI 11360258 · 5,300 mi I HAVE HAD 4 INCIDENTS SO FAR OVER THE LAST MONTH, ALL LASTING UNDER 5 SECONDS. IN EACH CASE, THE REGENERATIVE BRAKING SWITCHES TO A DIFFERENT LEVEL WITHOUT ANY INPUT FROM THE USER. THIS PRESENTS AS WHAT FEELS LIKE A LEVEL 3 (STRONG) BRAKING WHEN NONE WAS ON AND NO FOOT IS NEAR THE BRAKE, OR IF THE REGEN BRAKING WAS TURNED ON (IN ONE CASE TO LEVEL 1), IT SHUTS OFF MOMENTARILY. DURING THESE INCIDENTS, THE BEHAVIOR IS ALSO IRREGULARLY CHANGING BETWEEN FOR EXAMPLE HARD BREAKING (LEVEL 3) FOR A SECOND AND THEN FLUTTERING IRREGULARLY BETWEEN HARD AN… Look up ODI 11360258 at NHTSA ↗	114.3% ODI 11421743 The traction battery on my Ioniq 2020 went bad after 3 months. The diagnostic panel warned me of an electric issue and the range dropped drastically. The dealer changed the battery no questions asked. My vin wasn't part of the recall. I wonder if the recall should have included a broader range of vehicles. Look up ODI 11421743 at NHTSA ↗	150.0% ODI 11750854 VEHICLE SAFETY HAZARD: ACTIVE HIGH-VOLTAGE ISOLATION FAULT (DTC P0AA6) WITH DECEPTIVE DEALER/MANUFACTURER BYPASS & CONCEALMENT. On April 15, 2026, the dealer scanned my 2021 Ioniq EV and uncovered DTC P0AA6 (Hybrid/EV Battery Voltage System Isolation Fault), which denotes a catastrophic high-voltage leak into the chassis. This is a severe safety hazard posing immediate risks of fatal electrocution to occupants, EV battery thermal runaway (fire), or sudden total loss of propulsion at highway speeds. Instead of grounding this dangerous vehicle… Look up ODI 11750854 at NHTSA ↗
Service Brakes	111.1% ODI 11114947 · 600 mi TL* THE CONTACT OWNS A 2017 HYUNDAI IONIQ ELECTRIC. THE CONTACT TOOK THE VEHICLE TO HYUNDAI INLAND EMPIRE (25072 REDLANDS BLVD, LOMA LINDA, CA 92354) FOR A KEY REPLACEMENT. WHEN THE CONTACT PLACED THE GEAR IN REVERSE AND ATTEMPTED TO REMOVE HIS FOOT FROM THE BRAKE PEDAL, THE VEHICLE ACCELERATED UP TO 20 MPH WHILE IN REVERSE. AS A RESULT THE VEHICLE CRASHED INTO ANOTHER VEHICLE. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE SAME DEALER WAS INFORMED ABOUT THE FAILURE, BUT THE VEHICLE WAS NOT DIAGNOSED … Look up ODI 11114947 at NHTSA ↗	0Unavailable No examples available for this selection.	350.0% ODI 11360258 · 5,300 mi I HAVE HAD 4 INCIDENTS SO FAR OVER THE LAST MONTH, ALL LASTING UNDER 5 SECONDS. IN EACH CASE, THE REGENERATIVE BRAKING SWITCHES TO A DIFFERENT LEVEL WITHOUT ANY INPUT FROM THE USER. THIS PRESENTS AS WHAT FEELS LIKE A LEVEL 3 (STRONG) BRAKING WHEN NONE WAS ON AND NO FOOT IS NEAR THE BRAKE, OR IF THE REGEN BRAKING WAS TURNED ON (IN ONE CASE TO LEVEL 1), IT SHUTS OFF MOMENTARILY. DURING THESE INCIDENTS, THE BEHAVIOR IS ALSO IRREGULARLY CHANGING BETWEEN FOR EXAMPLE HARD BREAKING (LEVEL 3) FOR A SECOND AND THEN FLUTTERING IRREGULARLY BETWEEN HARD AN… Look up ODI 11360258 at NHTSA ↗	342.9% ODI 11432408 This issue is easily repeatable, when braking if you hit a bump (pot hole, etc.) the braking power is greatly reduced & the brake pedal becomes almost impossible to push down to stop the car, making it very hard to stop even when not coming to an abrupt stop. Look up ODI 11432408 at NHTSA ↗	00.0% No examples available for this selection.
Vehicle Speed Control	222.2% ODI 11114947 · 600 mi TL* THE CONTACT OWNS A 2017 HYUNDAI IONIQ ELECTRIC. THE CONTACT TOOK THE VEHICLE TO HYUNDAI INLAND EMPIRE (25072 REDLANDS BLVD, LOMA LINDA, CA 92354) FOR A KEY REPLACEMENT. WHEN THE CONTACT PLACED THE GEAR IN REVERSE AND ATTEMPTED TO REMOVE HIS FOOT FROM THE BRAKE PEDAL, THE VEHICLE ACCELERATED UP TO 20 MPH WHILE IN REVERSE. AS A RESULT THE VEHICLE CRASHED INTO ANOTHER VEHICLE. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE SAME DEALER WAS INFORMED ABOUT THE FAILURE, BUT THE VEHICLE WAS NOT DIAGNOSED … Look up ODI 11114947 at NHTSA ↗	0Unavailable No examples available for this selection.	233.3% ODI 11377395 · 6,800 mi THIS IS A FOLLOW UP TO COMPLAINT NUMBER 1# 1360258 SUBMITTED IN SEPT. IN PARTICULAR, I HAVE HAD MULTIPLE DEALERS REPLACE A WATER PUMP AND RELATED ASSEMBLIES FOR A TOTAL OF 3 REPLACEMENTS SINCE AUG. THIS WAS THEIR EFFORT TO DEAL WITH THE ELECTRICAL SYSTEM ISSUES THAT HAVE RESULTED CONTINUED INCIDENTS OF ERRATIC AND UNCONTROLLED APPLICATION OF THE REGENERATIVE BREAKING (NOT BY DRIVER), SHUTTING OFF OF ANY ABILITY TO ACCELERATE THE CAR WHILE DRIVING, AND COMPLETE SHUTOFFS OF THE CAR WHILE DRIVING ON FREEWAYS, I.E. ALL LIGHTS OFF, NO RESPONSE FROM … Look up ODI 11377395 at NHTSA ↗	114.3% ODI 11634881 When approaching a turn, I let off the accelerator but the car didn’t stop accelerating. Instead, it gently kept accelerating. I applied the brakes and the car started slowing down but not at the same rate I was applying brake pressure. Therefore I floored the brakes to try coming to a complete stop. Sadly, the cars ABS system did not engage, half of the car hopped over the curb at about 20 mph. I was able to steer the car back onto the road where it finally came to a stop but acted like it wanted to keep going until full blackout power loss ha… Look up ODI 11634881 at NHTSA ↗	00.0% No examples available for this selection.
Fuel/Propulsion System	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	114.3% ODI 11634881 When approaching a turn, I let off the accelerator but the car didn’t stop accelerating. Instead, it gently kept accelerating. I applied the brakes and the car started slowing down but not at the same rate I was applying brake pressure. Therefore I floored the brakes to try coming to a complete stop. Sadly, the cars ABS system did not engage, half of the car hopped over the curb at about 20 mph. I was able to steer the car back onto the road where it finally came to a stop but acted like it wanted to keep going until full blackout power loss ha… Look up ODI 11634881 at NHTSA ↗	150.0% ODI 11750854 VEHICLE SAFETY HAZARD: ACTIVE HIGH-VOLTAGE ISOLATION FAULT (DTC P0AA6) WITH DECEPTIVE DEALER/MANUFACTURER BYPASS & CONCEALMENT. On April 15, 2026, the dealer scanned my 2021 Ioniq EV and uncovered DTC P0AA6 (Hybrid/EV Battery Voltage System Isolation Fault), which denotes a catastrophic high-voltage leak into the chassis. This is a severe safety hazard posing immediate risks of fatal electrocution to occupants, EV battery thermal runaway (fire), or sudden total loss of propulsion at highway speeds. Instead of grounding this dangerous vehicle… Look up ODI 11750854 at NHTSA ↗
Power Train	222.2% ODI 11114947 · 600 mi TL* THE CONTACT OWNS A 2017 HYUNDAI IONIQ ELECTRIC. THE CONTACT TOOK THE VEHICLE TO HYUNDAI INLAND EMPIRE (25072 REDLANDS BLVD, LOMA LINDA, CA 92354) FOR A KEY REPLACEMENT. WHEN THE CONTACT PLACED THE GEAR IN REVERSE AND ATTEMPTED TO REMOVE HIS FOOT FROM THE BRAKE PEDAL, THE VEHICLE ACCELERATED UP TO 20 MPH WHILE IN REVERSE. AS A RESULT THE VEHICLE CRASHED INTO ANOTHER VEHICLE. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE SAME DEALER WAS INFORMED ABOUT THE FAILURE, BUT THE VEHICLE WAS NOT DIAGNOSED … Look up ODI 11114947 at NHTSA ↗	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.
Steering	222.2% ODI 11156553 · 18,000 mi CAR SKIDS AND LOSES CONTROL. TRACTION CONTROL LIGHT ILLUMINATES DURING LOSS OF CONTROL. HARD BRAKING CREATES THE BRAKES TO LOCK UP. VEHICLE IS UNABLE TO EXECUTE CLIMBING INCLINED DRIVEWAYS. SEVERE SAFETY ISSUE AS ITS ESPECIALLY CONTROL LOSS DURING RAIN. Look up ODI 11156553 at NHTSA ↗	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.
Electrical System:12v/24v/48v Battery	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	00.0% No examples available for this selection.	150.0% ODI 11527960 · 22,000 mi The contact owns a 2021 Hyundai Ioniq EV. The contact stated that on several occasions the vehicle would not start or could not be restarted after being turned off. The vehicle was towed to the local dealer who was unable to determine the exact cause of the failure but indicated that the failure was related to the 12V battery system. The vehicle was not yet repaired. The manufacturer and local dealer were notified of the failure. The failure mileage was 22,000. Look up ODI 11527960 at NHTSA ↗
Engine	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.	114.3% ODI 11525179 Refill Coolant warning light intermittently signals EV battery coolant problem. Hyundai dealer in Fort Wayne, IN, topped off coolant. Andrew service representative was informed of two YouTube videos explaining recall due to defective coolant ASC1 that crystalizes and/or becomes sludgy. Video reported dealer changed old coolant with an upgraded coolant ASC2 number in a Hyundai Ioniq Limited 2020 Electric Vehicle 38 kw like my vehicle. Fort Wayne, Glenbrook Hyundai dealer has very little experience or training with EV vehicles, since they off… Look up ODI 11525179 at NHTSA ↗	00.0% No examples available for this selection.

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	12,400–49,920 mi	40,000 mi	7	ODI 11156553 · 18,000 mi CAR SKIDS AND LOSES CONTROL. TRACTION CONTROL LIGHT ILLUMINATES DURING LOSS OF CONTROL. HARD BRAKING CREATES THE BRAKES TO LOCK UP. VEHICLE IS UNABLE TO EXECUTE CLIMBING INCLINED DRIVEWAYS. SEVERE SAFETY ISSUE AS ITS ESPECIALLY CONTROL LOSS DURING RAIN. Look up ODI 11156553 at NHTSA ↗ ODI 11278971 · 40,000 mi BROUGHT VEHICLE IN TO DEALERSHIP MULTIPLE TIMES. WHEN USING THE BLUETOOTH CONNECTION IN THE CAR TO MAKE OR RECEIVE CALLS, THE PERSON ON THE OTHER END OUTSIDE OF THE VEHICLE, RECEIVING THE CALL, OR MAKING THE CALL, HEARA A TERRIBLE ECHO OF THEIR OWN VOICE. THE PERSON INSIDE THE VEHCILE DOES NOT HEAR AN ECHO. THIS IS NOT ONLY ANNOYING, IT CAN BE QUITE DISTRACTING.IT TOOK SEVERAL VISITS T CONVINE THE DEALERSHIP AND CORPORATE CUSTOMER SERVICE THAT THE ECHOING EXISTS. THE ECHO OCCURS REGARDLESS OF THE TYPE/BRAND OR CELL PHONE OR LANDLINE. I WAS FINA… Look up ODI 11278971 at NHTSA ↗ ODI 11310232 · 40,000 mi FOR APPROX. ONE WEEK THERE WAS AN UNPLEASANT SMELL NOTICED INSIDE OF THE VEHICLE WHEN DRIVING. IT SEEMED TO BE MORE EVIDENT WHEN THE HEAT/AC SYSTEM WAS OFF AND OUTSIDE AIR WAS COMING IN THROUGH THE VENTS. AT THE END OF THE WEEK, ON THE WEEKEND THE ODOR WAS NOTICED WHEN THE CAR WAS DRIVEN HOME, AND AFTER IT GOT HOME. THE HOOD WAS OPENED AND IT WAS NOTICED THAT THE 12V AUX BATTERY WAS BLOATED ON ONE SIDE, WAS STEAMING VAPOR OUT OF ONE SIDE, AND WAS VERY HOT. THE CAR WAS POWERED OFF AND LOOKED AT AGAIN THE NEXT MORNING. THE CAR WOULD NOT OPEN AND … Look up ODI 11310232 at NHTSA ↗
Service Brakes	Too few reports for a range	5,300 mi	3 (sparse)	ODI 11114947 · 600 mi TL* THE CONTACT OWNS A 2017 HYUNDAI IONIQ ELECTRIC. THE CONTACT TOOK THE VEHICLE TO HYUNDAI INLAND EMPIRE (25072 REDLANDS BLVD, LOMA LINDA, CA 92354) FOR A KEY REPLACEMENT. WHEN THE CONTACT PLACED THE GEAR IN REVERSE AND ATTEMPTED TO REMOVE HIS FOOT FROM THE BRAKE PEDAL, THE VEHICLE ACCELERATED UP TO 20 MPH WHILE IN REVERSE. AS A RESULT THE VEHICLE CRASHED INTO ANOTHER VEHICLE. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE SAME DEALER WAS INFORMED ABOUT THE FAILURE, BUT THE VEHICLE WAS NOT DIAGNOSED … Look up ODI 11114947 at NHTSA ↗ ODI 11360258 · 5,300 mi I HAVE HAD 4 INCIDENTS SO FAR OVER THE LAST MONTH, ALL LASTING UNDER 5 SECONDS. IN EACH CASE, THE REGENERATIVE BRAKING SWITCHES TO A DIFFERENT LEVEL WITHOUT ANY INPUT FROM THE USER. THIS PRESENTS AS WHAT FEELS LIKE A LEVEL 3 (STRONG) BRAKING WHEN NONE WAS ON AND NO FOOT IS NEAR THE BRAKE, OR IF THE REGEN BRAKING WAS TURNED ON (IN ONE CASE TO LEVEL 1), IT SHUTS OFF MOMENTARILY. DURING THESE INCIDENTS, THE BEHAVIOR IS ALSO IRREGULARLY CHANGING BETWEEN FOR EXAMPLE HARD BREAKING (LEVEL 3) FOR A SECOND AND THEN FLUTTERING IRREGULARLY BETWEEN HARD AN… Look up ODI 11360258 at NHTSA ↗ ODI 11377395 · 6,800 mi THIS IS A FOLLOW UP TO COMPLAINT NUMBER 1# 1360258 SUBMITTED IN SEPT. IN PARTICULAR, I HAVE HAD MULTIPLE DEALERS REPLACE A WATER PUMP AND RELATED ASSEMBLIES FOR A TOTAL OF 3 REPLACEMENTS SINCE AUG. THIS WAS THEIR EFFORT TO DEAL WITH THE ELECTRICAL SYSTEM ISSUES THAT HAVE RESULTED CONTINUED INCIDENTS OF ERRATIC AND UNCONTROLLED APPLICATION OF THE REGENERATIVE BREAKING (NOT BY DRIVER), SHUTTING OFF OF ANY ABILITY TO ACCELERATE THE CAR WHILE DRIVING, AND COMPLETE SHUTOFFS OF THE CAR WHILE DRIVING ON FREEWAYS, I.E. ALL LIGHTS OFF, NO RESPONSE FROM … Look up ODI 11377395 at NHTSA ↗
Vehicle Speed Control	Too few reports for a range	6,800 mi	3 (sparse)	ODI 11114947 · 600 mi TL* THE CONTACT OWNS A 2017 HYUNDAI IONIQ ELECTRIC. THE CONTACT TOOK THE VEHICLE TO HYUNDAI INLAND EMPIRE (25072 REDLANDS BLVD, LOMA LINDA, CA 92354) FOR A KEY REPLACEMENT. WHEN THE CONTACT PLACED THE GEAR IN REVERSE AND ATTEMPTED TO REMOVE HIS FOOT FROM THE BRAKE PEDAL, THE VEHICLE ACCELERATED UP TO 20 MPH WHILE IN REVERSE. AS A RESULT THE VEHICLE CRASHED INTO ANOTHER VEHICLE. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE SAME DEALER WAS INFORMED ABOUT THE FAILURE, BUT THE VEHICLE WAS NOT DIAGNOSED … Look up ODI 11114947 at NHTSA ↗ ODI 11352395 · 80,162 mi IF YOU ARE SLOWING DOWN WHILE REGENERATING, THEN NEED TO SPEED UP YOU CAN'T. THE ACTIVE FLAP SYSTEM LIGHT COMES ON AND MAKES THE CAR GO INTO A LIMP MODE. IT CORRECTS ITSELF ABOUT A SECOND OR MORE. HAVING TO SPEED UP FOR THE LIGHT THAT WAS RED AND NOW GREEN CREATED A DANGEROUS SITUATION. I COULDN'T GO. Look up ODI 11352395 at NHTSA ↗ ODI 11377395 · 6,800 mi THIS IS A FOLLOW UP TO COMPLAINT NUMBER 1# 1360258 SUBMITTED IN SEPT. IN PARTICULAR, I HAVE HAD MULTIPLE DEALERS REPLACE A WATER PUMP AND RELATED ASSEMBLIES FOR A TOTAL OF 3 REPLACEMENTS SINCE AUG. THIS WAS THEIR EFFORT TO DEAL WITH THE ELECTRICAL SYSTEM ISSUES THAT HAVE RESULTED CONTINUED INCIDENTS OF ERRATIC AND UNCONTROLLED APPLICATION OF THE REGENERATIVE BREAKING (NOT BY DRIVER), SHUTTING OFF OF ANY ABILITY TO ACCELERATE THE CAR WHILE DRIVING, AND COMPLETE SHUTOFFS OF THE CAR WHILE DRIVING ON FREEWAYS, I.E. ALL LIGHTS OFF, NO RESPONSE FROM … Look up ODI 11377395 at NHTSA ↗
Power Train	Too few reports for a range	40,381 mi	2 (sparse)	ODI 11114947 · 600 mi TL* THE CONTACT OWNS A 2017 HYUNDAI IONIQ ELECTRIC. THE CONTACT TOOK THE VEHICLE TO HYUNDAI INLAND EMPIRE (25072 REDLANDS BLVD, LOMA LINDA, CA 92354) FOR A KEY REPLACEMENT. WHEN THE CONTACT PLACED THE GEAR IN REVERSE AND ATTEMPTED TO REMOVE HIS FOOT FROM THE BRAKE PEDAL, THE VEHICLE ACCELERATED UP TO 20 MPH WHILE IN REVERSE. AS A RESULT THE VEHICLE CRASHED INTO ANOTHER VEHICLE. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE SAME DEALER WAS INFORMED ABOUT THE FAILURE, BUT THE VEHICLE WAS NOT DIAGNOSED … Look up ODI 11114947 at NHTSA ↗ ODI 11352395 · 80,162 mi IF YOU ARE SLOWING DOWN WHILE REGENERATING, THEN NEED TO SPEED UP YOU CAN'T. THE ACTIVE FLAP SYSTEM LIGHT COMES ON AND MAKES THE CAR GO INTO A LIMP MODE. IT CORRECTS ITSELF ABOUT A SECOND OR MORE. HAVING TO SPEED UP FOR THE LIGHT THAT WAS RED AND NOW GREEN CREATED A DANGEROUS SITUATION. I COULDN'T GO. Look up ODI 11352395 at NHTSA ↗
Steering	Too few reports for a range	18,000 mi	1 (sparse)	ODI 11156553 · 18,000 mi CAR SKIDS AND LOSES CONTROL. TRACTION CONTROL LIGHT ILLUMINATES DURING LOSS OF CONTROL. HARD BRAKING CREATES THE BRAKES TO LOCK UP. VEHICLE IS UNABLE TO EXECUTE CLIMBING INCLINED DRIVEWAYS. SEVERE SAFETY ISSUE AS ITS ESPECIALLY CONTROL LOSS DURING RAIN. Look up ODI 11156553 at NHTSA ↗
Electrical System:12v/24v/48v Battery	Too few reports for a range	22,000 mi	1 (sparse)	ODI 11527960 · 22,000 mi The contact owns a 2021 Hyundai Ioniq EV. The contact stated that on several occasions the vehicle would not start or could not be restarted after being turned off. The vehicle was towed to the local dealer who was unable to determine the exact cause of the failure but indicated that the failure was related to the 12V battery system. The vehicle was not yet repaired. The manufacturer and local dealer were notified of the failure. The failure mileage was 22,000. Look up ODI 11527960 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	0	None	No examples available for this selection.
2024-12	0	None	No examples available for this selection.
2025-01	1	None	ODI 11634881 When approaching a turn, I let off the accelerator but the car didn’t stop accelerating. Instead, it gently kept accelerating. I applied the brakes and the car started slowing down but not at the same rate I was applying brake pressure. Therefore I floored the brakes to try coming to a complete stop. Sadly, the cars ABS system did not engage, half of the car hopped over the curb at about 20 mph. I was able to steer the car back onto the road where it finally came to a stop but acted like it wanted to keep going until full blackout power loss ha… Look up ODI 11634881 at NHTSA ↗
2025-02	0	None	No examples available for this selection.
2025-03	0	None	No examples available for this selection.
2025-04	0	None	No examples available for this selection.
2025-05	0	None	No examples available for this selection.
2025-06	0	None	No examples available for this selection.
2025-07	0	None	No examples available for this selection.
2025-08	1	None	ODI 11678970 The instrument cluster (digital speed display) on my 2019 Hyundai Ioniq Hybrid Limited has repeatedly turned off while driving. This issue happens randomly, especially in warm weather or after the car has been sitting in the sun. Sometimes the cluster reboots (I hear the start-up chime, the display shows the headlight icon, etc.), other times it remains blank for several minutes. This affects the ability to see speed, gear, and warning indicators, posing a serious safety risk. I’ve had to pull over multiple times because I couldn’t see how fas… Look up ODI 11678970 at NHTSA ↗
2025-09	0	None	No examples available for this selection.
2025-10	0	None	No examples available for this selection.
2025-11	0	None	No examples available for this selection.
2025-12	0	None	No examples available for this selection.
2026-01	0	None	No examples available for this selection.
2026-02	0	None	No examples available for this selection.
2026-03	0	None	No examples available for this selection.
2026-04	0	None	No examples available for this selection.
2026-05	0	None	No examples available for this selection.
2026-06	0	None	No examples available for this selection.
2026-07	1	None	ODI 11750854 VEHICLE SAFETY HAZARD: ACTIVE HIGH-VOLTAGE ISOLATION FAULT (DTC P0AA6) WITH DECEPTIVE DEALER/MANUFACTURER BYPASS & CONCEALMENT. On April 15, 2026, the dealer scanned my 2021 Ioniq EV and uncovered DTC P0AA6 (Hybrid/EV Battery Voltage System Isolation Fault), which denotes a catastrophic high-voltage leak into the chassis. This is a severe safety hazard posing immediate risks of fatal electrocution to occupants, EV battery thermal runaway (fire), or sudden total loss of propulsion at highway speeds. Instead of grounding this dangerous vehicle… Look up ODI 11750854 at NHTSA ↗
2026-08	0	None	No examples available for this selection.
2026-09	0	None	No examples available for this selection.
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

2020: 4 complaints · 2021: 1 complaints

Equal observation windows
Model year	Through age 0	Through age 1	Through age 2
2020	1	4	4
2021	0	0	1

Date coverage across each selected cohort

Date basis for all complaints in selected model years
Year	Incident dates used	Filing date fallbacks	Excluded dates
2020	7	0	0
2021	2	0	0

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	Service Brakes	Vehicle Speed Control	Fuel/Propulsion System	Power Train	Steering	Electrical System:12v/24v/48v Battery	Engine
Electrical System	—	2 ODI 11360258 · 5,300 mi I HAVE HAD 4 INCIDENTS SO FAR OVER THE LAST MONTH, ALL LASTING UNDER 5 SECONDS. IN EACH CASE, THE REGENERATIVE BRAKING SWITCHES TO A DIFFERENT LEVEL WITHOUT ANY INPUT FROM THE USER. THIS PRESENTS AS WHAT FEELS LIKE A LEVEL 3 (STRONG) BRAKING WHEN NONE WAS ON AND NO FOOT IS NEAR THE BRAKE, OR IF THE REGEN BRAKING WAS TURNED ON (IN ONE CASE TO LEVEL 1), IT SHUTS OFF MOMENTARILY. DURING THESE INCIDENTS, THE BEHAVIOR IS ALSO IRREGULARLY CHANGING BETWEEN FOR EXAMPLE HARD BREAKING (LEVEL 3) FOR A SECOND AND THEN FLUTTERING IRREGULARLY BETWEEN HARD AN… Look up ODI 11360258 at NHTSA ↗ ODI 11377395 · 6,800 mi THIS IS A FOLLOW UP TO COMPLAINT NUMBER 1# 1360258 SUBMITTED IN SEPT. IN PARTICULAR, I HAVE HAD MULTIPLE DEALERS REPLACE A WATER PUMP AND RELATED ASSEMBLIES FOR A TOTAL OF 3 REPLACEMENTS SINCE AUG. THIS WAS THEIR EFFORT TO DEAL WITH THE ELECTRICAL SYSTEM ISSUES THAT HAVE RESULTED CONTINUED INCIDENTS OF ERRATIC AND UNCONTROLLED APPLICATION OF THE REGENERATIVE BREAKING (NOT BY DRIVER), SHUTTING OFF OF ANY ABILITY TO ACCELERATE THE CAR WHILE DRIVING, AND COMPLETE SHUTOFFS OF THE CAR WHILE DRIVING ON FREEWAYS, I.E. ALL LIGHTS OFF, NO RESPONSE FROM … Look up ODI 11377395 at NHTSA ↗	3 ODI 11352395 · 80,162 mi IF YOU ARE SLOWING DOWN WHILE REGENERATING, THEN NEED TO SPEED UP YOU CAN'T. THE ACTIVE FLAP SYSTEM LIGHT COMES ON AND MAKES THE CAR GO INTO A LIMP MODE. IT CORRECTS ITSELF ABOUT A SECOND OR MORE. HAVING TO SPEED UP FOR THE LIGHT THAT WAS RED AND NOW GREEN CREATED A DANGEROUS SITUATION. I COULDN'T GO. Look up ODI 11352395 at NHTSA ↗ ODI 11377395 · 6,800 mi THIS IS A FOLLOW UP TO COMPLAINT NUMBER 1# 1360258 SUBMITTED IN SEPT. IN PARTICULAR, I HAVE HAD MULTIPLE DEALERS REPLACE A WATER PUMP AND RELATED ASSEMBLIES FOR A TOTAL OF 3 REPLACEMENTS SINCE AUG. THIS WAS THEIR EFFORT TO DEAL WITH THE ELECTRICAL SYSTEM ISSUES THAT HAVE RESULTED CONTINUED INCIDENTS OF ERRATIC AND UNCONTROLLED APPLICATION OF THE REGENERATIVE BREAKING (NOT BY DRIVER), SHUTTING OFF OF ANY ABILITY TO ACCELERATE THE CAR WHILE DRIVING, AND COMPLETE SHUTOFFS OF THE CAR WHILE DRIVING ON FREEWAYS, I.E. ALL LIGHTS OFF, NO RESPONSE FROM … Look up ODI 11377395 at NHTSA ↗ ODI 11678970 The instrument cluster (digital speed display) on my 2019 Hyundai Ioniq Hybrid Limited has repeatedly turned off while driving. This issue happens randomly, especially in warm weather or after the car has been sitting in the sun. Sometimes the cluster reboots (I hear the start-up chime, the display shows the headlight icon, etc.), other times it remains blank for several minutes. This affects the ability to see speed, gear, and warning indicators, posing a serious safety risk. I’ve had to pull over multiple times because I couldn’t see how fas… Look up ODI 11678970 at NHTSA ↗	1 ODI 11750854 VEHICLE SAFETY HAZARD: ACTIVE HIGH-VOLTAGE ISOLATION FAULT (DTC P0AA6) WITH DECEPTIVE DEALER/MANUFACTURER BYPASS & CONCEALMENT. On April 15, 2026, the dealer scanned my 2021 Ioniq EV and uncovered DTC P0AA6 (Hybrid/EV Battery Voltage System Isolation Fault), which denotes a catastrophic high-voltage leak into the chassis. This is a severe safety hazard posing immediate risks of fatal electrocution to occupants, EV battery thermal runaway (fire), or sudden total loss of propulsion at highway speeds. Instead of grounding this dangerous vehicle… Look up ODI 11750854 at NHTSA ↗	1 ODI 11352395 · 80,162 mi IF YOU ARE SLOWING DOWN WHILE REGENERATING, THEN NEED TO SPEED UP YOU CAN'T. THE ACTIVE FLAP SYSTEM LIGHT COMES ON AND MAKES THE CAR GO INTO A LIMP MODE. IT CORRECTS ITSELF ABOUT A SECOND OR MORE. HAVING TO SPEED UP FOR THE LIGHT THAT WAS RED AND NOW GREEN CREATED A DANGEROUS SITUATION. I COULDN'T GO. Look up ODI 11352395 at NHTSA ↗	1 ODI 11156553 · 18,000 mi CAR SKIDS AND LOSES CONTROL. TRACTION CONTROL LIGHT ILLUMINATES DURING LOSS OF CONTROL. HARD BRAKING CREATES THE BRAKES TO LOCK UP. VEHICLE IS UNABLE TO EXECUTE CLIMBING INCLINED DRIVEWAYS. SEVERE SAFETY ISSUE AS ITS ESPECIALLY CONTROL LOSS DURING RAIN. Look up ODI 11156553 at NHTSA ↗	0	0
Service Brakes	2 ODI 11360258 · 5,300 mi I HAVE HAD 4 INCIDENTS SO FAR OVER THE LAST MONTH, ALL LASTING UNDER 5 SECONDS. IN EACH CASE, THE REGENERATIVE BRAKING SWITCHES TO A DIFFERENT LEVEL WITHOUT ANY INPUT FROM THE USER. THIS PRESENTS AS WHAT FEELS LIKE A LEVEL 3 (STRONG) BRAKING WHEN NONE WAS ON AND NO FOOT IS NEAR THE BRAKE, OR IF THE REGEN BRAKING WAS TURNED ON (IN ONE CASE TO LEVEL 1), IT SHUTS OFF MOMENTARILY. DURING THESE INCIDENTS, THE BEHAVIOR IS ALSO IRREGULARLY CHANGING BETWEEN FOR EXAMPLE HARD BREAKING (LEVEL 3) FOR A SECOND AND THEN FLUTTERING IRREGULARLY BETWEEN HARD AN… Look up ODI 11360258 at NHTSA ↗ ODI 11377395 · 6,800 mi THIS IS A FOLLOW UP TO COMPLAINT NUMBER 1# 1360258 SUBMITTED IN SEPT. IN PARTICULAR, I HAVE HAD MULTIPLE DEALERS REPLACE A WATER PUMP AND RELATED ASSEMBLIES FOR A TOTAL OF 3 REPLACEMENTS SINCE AUG. THIS WAS THEIR EFFORT TO DEAL WITH THE ELECTRICAL SYSTEM ISSUES THAT HAVE RESULTED CONTINUED INCIDENTS OF ERRATIC AND UNCONTROLLED APPLICATION OF THE REGENERATIVE BREAKING (NOT BY DRIVER), SHUTTING OFF OF ANY ABILITY TO ACCELERATE THE CAR WHILE DRIVING, AND COMPLETE SHUTOFFS OF THE CAR WHILE DRIVING ON FREEWAYS, I.E. ALL LIGHTS OFF, NO RESPONSE FROM … Look up ODI 11377395 at NHTSA ↗	—	2 ODI 11114947 · 600 mi TL* THE CONTACT OWNS A 2017 HYUNDAI IONIQ ELECTRIC. THE CONTACT TOOK THE VEHICLE TO HYUNDAI INLAND EMPIRE (25072 REDLANDS BLVD, LOMA LINDA, CA 92354) FOR A KEY REPLACEMENT. WHEN THE CONTACT PLACED THE GEAR IN REVERSE AND ATTEMPTED TO REMOVE HIS FOOT FROM THE BRAKE PEDAL, THE VEHICLE ACCELERATED UP TO 20 MPH WHILE IN REVERSE. AS A RESULT THE VEHICLE CRASHED INTO ANOTHER VEHICLE. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE SAME DEALER WAS INFORMED ABOUT THE FAILURE, BUT THE VEHICLE WAS NOT DIAGNOSED … Look up ODI 11114947 at NHTSA ↗ ODI 11377395 · 6,800 mi THIS IS A FOLLOW UP TO COMPLAINT NUMBER 1# 1360258 SUBMITTED IN SEPT. IN PARTICULAR, I HAVE HAD MULTIPLE DEALERS REPLACE A WATER PUMP AND RELATED ASSEMBLIES FOR A TOTAL OF 3 REPLACEMENTS SINCE AUG. THIS WAS THEIR EFFORT TO DEAL WITH THE ELECTRICAL SYSTEM ISSUES THAT HAVE RESULTED CONTINUED INCIDENTS OF ERRATIC AND UNCONTROLLED APPLICATION OF THE REGENERATIVE BREAKING (NOT BY DRIVER), SHUTTING OFF OF ANY ABILITY TO ACCELERATE THE CAR WHILE DRIVING, AND COMPLETE SHUTOFFS OF THE CAR WHILE DRIVING ON FREEWAYS, I.E. ALL LIGHTS OFF, NO RESPONSE FROM … Look up ODI 11377395 at NHTSA ↗	0	1 ODI 11114947 · 600 mi TL* THE CONTACT OWNS A 2017 HYUNDAI IONIQ ELECTRIC. THE CONTACT TOOK THE VEHICLE TO HYUNDAI INLAND EMPIRE (25072 REDLANDS BLVD, LOMA LINDA, CA 92354) FOR A KEY REPLACEMENT. WHEN THE CONTACT PLACED THE GEAR IN REVERSE AND ATTEMPTED TO REMOVE HIS FOOT FROM THE BRAKE PEDAL, THE VEHICLE ACCELERATED UP TO 20 MPH WHILE IN REVERSE. AS A RESULT THE VEHICLE CRASHED INTO ANOTHER VEHICLE. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE SAME DEALER WAS INFORMED ABOUT THE FAILURE, BUT THE VEHICLE WAS NOT DIAGNOSED … Look up ODI 11114947 at NHTSA ↗	0	0	0
Vehicle Speed Control	3 ODI 11352395 · 80,162 mi IF YOU ARE SLOWING DOWN WHILE REGENERATING, THEN NEED TO SPEED UP YOU CAN'T. THE ACTIVE FLAP SYSTEM LIGHT COMES ON AND MAKES THE CAR GO INTO A LIMP MODE. IT CORRECTS ITSELF ABOUT A SECOND OR MORE. HAVING TO SPEED UP FOR THE LIGHT THAT WAS RED AND NOW GREEN CREATED A DANGEROUS SITUATION. I COULDN'T GO. Look up ODI 11352395 at NHTSA ↗ ODI 11377395 · 6,800 mi THIS IS A FOLLOW UP TO COMPLAINT NUMBER 1# 1360258 SUBMITTED IN SEPT. IN PARTICULAR, I HAVE HAD MULTIPLE DEALERS REPLACE A WATER PUMP AND RELATED ASSEMBLIES FOR A TOTAL OF 3 REPLACEMENTS SINCE AUG. THIS WAS THEIR EFFORT TO DEAL WITH THE ELECTRICAL SYSTEM ISSUES THAT HAVE RESULTED CONTINUED INCIDENTS OF ERRATIC AND UNCONTROLLED APPLICATION OF THE REGENERATIVE BREAKING (NOT BY DRIVER), SHUTTING OFF OF ANY ABILITY TO ACCELERATE THE CAR WHILE DRIVING, AND COMPLETE SHUTOFFS OF THE CAR WHILE DRIVING ON FREEWAYS, I.E. ALL LIGHTS OFF, NO RESPONSE FROM … Look up ODI 11377395 at NHTSA ↗ ODI 11678970 The instrument cluster (digital speed display) on my 2019 Hyundai Ioniq Hybrid Limited has repeatedly turned off while driving. This issue happens randomly, especially in warm weather or after the car has been sitting in the sun. Sometimes the cluster reboots (I hear the start-up chime, the display shows the headlight icon, etc.), other times it remains blank for several minutes. This affects the ability to see speed, gear, and warning indicators, posing a serious safety risk. I’ve had to pull over multiple times because I couldn’t see how fas… Look up ODI 11678970 at NHTSA ↗	2 ODI 11114947 · 600 mi TL* THE CONTACT OWNS A 2017 HYUNDAI IONIQ ELECTRIC. THE CONTACT TOOK THE VEHICLE TO HYUNDAI INLAND EMPIRE (25072 REDLANDS BLVD, LOMA LINDA, CA 92354) FOR A KEY REPLACEMENT. WHEN THE CONTACT PLACED THE GEAR IN REVERSE AND ATTEMPTED TO REMOVE HIS FOOT FROM THE BRAKE PEDAL, THE VEHICLE ACCELERATED UP TO 20 MPH WHILE IN REVERSE. AS A RESULT THE VEHICLE CRASHED INTO ANOTHER VEHICLE. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE SAME DEALER WAS INFORMED ABOUT THE FAILURE, BUT THE VEHICLE WAS NOT DIAGNOSED … Look up ODI 11114947 at NHTSA ↗ ODI 11377395 · 6,800 mi THIS IS A FOLLOW UP TO COMPLAINT NUMBER 1# 1360258 SUBMITTED IN SEPT. IN PARTICULAR, I HAVE HAD MULTIPLE DEALERS REPLACE A WATER PUMP AND RELATED ASSEMBLIES FOR A TOTAL OF 3 REPLACEMENTS SINCE AUG. THIS WAS THEIR EFFORT TO DEAL WITH THE ELECTRICAL SYSTEM ISSUES THAT HAVE RESULTED CONTINUED INCIDENTS OF ERRATIC AND UNCONTROLLED APPLICATION OF THE REGENERATIVE BREAKING (NOT BY DRIVER), SHUTTING OFF OF ANY ABILITY TO ACCELERATE THE CAR WHILE DRIVING, AND COMPLETE SHUTOFFS OF THE CAR WHILE DRIVING ON FREEWAYS, I.E. ALL LIGHTS OFF, NO RESPONSE FROM … Look up ODI 11377395 at NHTSA ↗	—	1 ODI 11634881 When approaching a turn, I let off the accelerator but the car didn’t stop accelerating. Instead, it gently kept accelerating. I applied the brakes and the car started slowing down but not at the same rate I was applying brake pressure. Therefore I floored the brakes to try coming to a complete stop. Sadly, the cars ABS system did not engage, half of the car hopped over the curb at about 20 mph. I was able to steer the car back onto the road where it finally came to a stop but acted like it wanted to keep going until full blackout power loss ha… Look up ODI 11634881 at NHTSA ↗	2 ODI 11114947 · 600 mi TL* THE CONTACT OWNS A 2017 HYUNDAI IONIQ ELECTRIC. THE CONTACT TOOK THE VEHICLE TO HYUNDAI INLAND EMPIRE (25072 REDLANDS BLVD, LOMA LINDA, CA 92354) FOR A KEY REPLACEMENT. WHEN THE CONTACT PLACED THE GEAR IN REVERSE AND ATTEMPTED TO REMOVE HIS FOOT FROM THE BRAKE PEDAL, THE VEHICLE ACCELERATED UP TO 20 MPH WHILE IN REVERSE. AS A RESULT THE VEHICLE CRASHED INTO ANOTHER VEHICLE. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE SAME DEALER WAS INFORMED ABOUT THE FAILURE, BUT THE VEHICLE WAS NOT DIAGNOSED … Look up ODI 11114947 at NHTSA ↗ ODI 11352395 · 80,162 mi IF YOU ARE SLOWING DOWN WHILE REGENERATING, THEN NEED TO SPEED UP YOU CAN'T. THE ACTIVE FLAP SYSTEM LIGHT COMES ON AND MAKES THE CAR GO INTO A LIMP MODE. IT CORRECTS ITSELF ABOUT A SECOND OR MORE. HAVING TO SPEED UP FOR THE LIGHT THAT WAS RED AND NOW GREEN CREATED A DANGEROUS SITUATION. I COULDN'T GO. Look up ODI 11352395 at NHTSA ↗	0	0	0
Fuel/Propulsion System	1 ODI 11750854 VEHICLE SAFETY HAZARD: ACTIVE HIGH-VOLTAGE ISOLATION FAULT (DTC P0AA6) WITH DECEPTIVE DEALER/MANUFACTURER BYPASS & CONCEALMENT. On April 15, 2026, the dealer scanned my 2021 Ioniq EV and uncovered DTC P0AA6 (Hybrid/EV Battery Voltage System Isolation Fault), which denotes a catastrophic high-voltage leak into the chassis. This is a severe safety hazard posing immediate risks of fatal electrocution to occupants, EV battery thermal runaway (fire), or sudden total loss of propulsion at highway speeds. Instead of grounding this dangerous vehicle… Look up ODI 11750854 at NHTSA ↗	0	1 ODI 11634881 When approaching a turn, I let off the accelerator but the car didn’t stop accelerating. Instead, it gently kept accelerating. I applied the brakes and the car started slowing down but not at the same rate I was applying brake pressure. Therefore I floored the brakes to try coming to a complete stop. Sadly, the cars ABS system did not engage, half of the car hopped over the curb at about 20 mph. I was able to steer the car back onto the road where it finally came to a stop but acted like it wanted to keep going until full blackout power loss ha… Look up ODI 11634881 at NHTSA ↗	—	0	0	0	0
Power Train	1 ODI 11352395 · 80,162 mi IF YOU ARE SLOWING DOWN WHILE REGENERATING, THEN NEED TO SPEED UP YOU CAN'T. THE ACTIVE FLAP SYSTEM LIGHT COMES ON AND MAKES THE CAR GO INTO A LIMP MODE. IT CORRECTS ITSELF ABOUT A SECOND OR MORE. HAVING TO SPEED UP FOR THE LIGHT THAT WAS RED AND NOW GREEN CREATED A DANGEROUS SITUATION. I COULDN'T GO. Look up ODI 11352395 at NHTSA ↗	1 ODI 11114947 · 600 mi TL* THE CONTACT OWNS A 2017 HYUNDAI IONIQ ELECTRIC. THE CONTACT TOOK THE VEHICLE TO HYUNDAI INLAND EMPIRE (25072 REDLANDS BLVD, LOMA LINDA, CA 92354) FOR A KEY REPLACEMENT. WHEN THE CONTACT PLACED THE GEAR IN REVERSE AND ATTEMPTED TO REMOVE HIS FOOT FROM THE BRAKE PEDAL, THE VEHICLE ACCELERATED UP TO 20 MPH WHILE IN REVERSE. AS A RESULT THE VEHICLE CRASHED INTO ANOTHER VEHICLE. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE SAME DEALER WAS INFORMED ABOUT THE FAILURE, BUT THE VEHICLE WAS NOT DIAGNOSED … Look up ODI 11114947 at NHTSA ↗	2 ODI 11114947 · 600 mi TL* THE CONTACT OWNS A 2017 HYUNDAI IONIQ ELECTRIC. THE CONTACT TOOK THE VEHICLE TO HYUNDAI INLAND EMPIRE (25072 REDLANDS BLVD, LOMA LINDA, CA 92354) FOR A KEY REPLACEMENT. WHEN THE CONTACT PLACED THE GEAR IN REVERSE AND ATTEMPTED TO REMOVE HIS FOOT FROM THE BRAKE PEDAL, THE VEHICLE ACCELERATED UP TO 20 MPH WHILE IN REVERSE. AS A RESULT THE VEHICLE CRASHED INTO ANOTHER VEHICLE. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE SAME DEALER WAS INFORMED ABOUT THE FAILURE, BUT THE VEHICLE WAS NOT DIAGNOSED … Look up ODI 11114947 at NHTSA ↗ ODI 11352395 · 80,162 mi IF YOU ARE SLOWING DOWN WHILE REGENERATING, THEN NEED TO SPEED UP YOU CAN'T. THE ACTIVE FLAP SYSTEM LIGHT COMES ON AND MAKES THE CAR GO INTO A LIMP MODE. IT CORRECTS ITSELF ABOUT A SECOND OR MORE. HAVING TO SPEED UP FOR THE LIGHT THAT WAS RED AND NOW GREEN CREATED A DANGEROUS SITUATION. I COULDN'T GO. Look up ODI 11352395 at NHTSA ↗	0	—	0	0	0
Steering	1 ODI 11156553 · 18,000 mi CAR SKIDS AND LOSES CONTROL. TRACTION CONTROL LIGHT ILLUMINATES DURING LOSS OF CONTROL. HARD BRAKING CREATES THE BRAKES TO LOCK UP. VEHICLE IS UNABLE TO EXECUTE CLIMBING INCLINED DRIVEWAYS. SEVERE SAFETY ISSUE AS ITS ESPECIALLY CONTROL LOSS DURING RAIN. Look up ODI 11156553 at NHTSA ↗	0	0	0	0	—	0	0
Electrical System:12v/24v/48v Battery	0	0	0	0	0	0	—	0
Engine	0	0	0	0	0	0	0	—

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

3 patterns with matching reports.

Brake response concerns

4 mentions · 16.7% of complaints

Median mileage: 2,950 mi (2 usable records).

ODI 11114947 · 600 mi

Look up ODI 11114947 at NHTSA ↗

ODI 11360258 · 5,300 mi

I HAVE HAD 4 INCIDENTS SO FAR OVER THE LAST MONTH, ALL LASTING UNDER 5 SECONDS. IN EACH CASE, THE REGENERATIVE BRAKING SWITCHES TO A DIFFERENT LEVEL WITHOUT ANY INPUT FROM THE USER. THIS PRESENTS AS WHAT FEELS LIKE A LEVEL 3 (STRONG) BRAKING WHEN NONE WAS ON AND NO FOOT IS NEAR THE BRAKE, OR IF THE REGEN BRAKING WAS TURNED ON (IN ONE CASE TO LEVEL 1), IT SHUTS OFF MOMENTARILY. DURING THESE INCIDENTS, THE BEHAVIOR IS ALSO IRREGULARLY CHANGING BETWEEN FOR EXAMPLE HARD BREAKING (LEVEL 3) FOR A SECOND AND THEN FLUTTERING IRREGULARLY BETWEEN HARD AN…

Look up ODI 11360258 at NHTSA ↗

ODI 11432408

This issue is easily repeatable, when braking if you hit a bump (pot hole, etc.) the braking power is greatly reduced & the brake pedal becomes almost impossible to push down to stop the car, making it very hard to stop even when not coming to an abrupt stop.

Look up ODI 11432408 at NHTSA ↗

Matching rule

Warning lights and dashboard alerts

2 mentions · 8.3% of complaints

Median mileage: 5,300 mi (1 usable records).

ODI 11360258 · 5,300 mi

Look up ODI 11360258 at NHTSA ↗

ODI 11525179

Refill Coolant warning light intermittently signals EV battery coolant problem. Hyundai dealer in Fort Wayne, IN, topped off coolant. Andrew service representative was informed of two YouTube videos explaining recall due to defective coolant ASC1 that crystalizes and/or becomes sludgy. Video reported dealer changed old coolant with an upgraded coolant ASC2 number in a Hyundai Ioniq Limited 2020 Electric Vehicle 38 kw like my vehicle. Fort Wayne, Glenbrook Hyundai dealer has very little experience or training with EV vehicles, since they off…

Look up ODI 11525179 at NHTSA ↗

Matching rule

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

Battery drain and no-start mentions

1 mentions · 4.2% of complaints

Median mileage: 22,000 mi (1 usable records).

ODI 11527960 · 22,000 mi

The contact owns a 2021 Hyundai Ioniq EV. The contact stated that on several occasions the vehicle would not start or could not be restarted after being turned off. The vehicle was towed to the local dealer who was unable to determine the exact cause of the failure but indicated that the failure was related to the 12V battery system. The vehicle was not yet repaired. The manufacturer and local dealer were notified of the failure. The failure mileage was 22,000.

Look up ODI 11527960 at NHTSA ↗

Matching rule