U.S. public vehicle records

Hyundai SONATA PLUG-IN HYBRID engine problems

10 complaint narratives mention engine terms.

Key facts

63 owner complaints analyzed

2 distinct recall campaigns

24,961 mi median reported failure mileage

Scope: 2016 to 2019 model years. Data updated: 2026-10-01 (October 1, 2026). 36 complaints include usable failure mileage. View data status.

Engine operation evidence

10 of 63 complaints match this topic (15.9%). The keyword filter can include complaints that mention a transmission without reporting its failure. View matching rules.

Owner report 11061171 · 2018-01-08 (January 8, 2018)

ON 1/7/2018 WE WERE DRIVING OUR 2016 HYUNDAI SONATA HYBRID WITH APPROXIMATELY 41,100 MILES IN IT TO LOS ANGELES, CA WITH MY 82 YEAR OLD FATHER ON OXYGEN FROM SAN JOSE WHICH IS ABOUT 370 MILES AWAY ON HIGHWAY I5 WITH THE SPEED LIMIT OF 70 MPH. WHEN WE EXPERIENCED ENGINE PROBLEM. WHILE EXITING TO OUR DESTINATION ON HIGHWAY 118 DE SOTO EXIT, THE ENGINE HAD SLOWED DOWN IN THE MIDDLE OF THE INTERSECTION AND BARELY TURNED TO THE SIDE OF THE ROAD FOR SAFELY .WE WERE UNABLE TO START THE CAR AND DASHBOARD HAD INDICATED TO CHECK HEV . SEVERAL ATTEM…

Owner-reported narrative. 41,100 miles reported. Look up ODI 11061171 at NHTSA ↗

Owner report 11384407 · 2020-12-21 (December 21, 2020)

TL* THE CONTACT OWNS A 2016 HYUNDAI SONATA. THE CONTACT STATED THAT WHILE DRIVING AT HIGH SPEEDS, THE VEHICLE LOSS MOTIVE POWER AND STALLED WITH THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE VEHICLE WAS PUSHED OFF THE ROADWAY WITH ASSISTANCE FROM A BYSTANDER. THE VEHICLE WAS TOWED TO TUSTIN HYUNDAI (16 AUTO CENTER DRIVE, TUSTIN, CA 92782, [phone removed]) TO BE DIAGNOSED. THE TECHNICIAN DETERMINED THAT THE COMMUNICATION WIRE BETWEEN THE BATTERY AND COMPUTER FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED HOWEVER, THE FAILURE RECURR…

Owner-reported narrative. 18,000 miles reported. Look up ODI 11384407 at NHTSA ↗

Owner report 11472475 · 2022-07-06 (July 6, 2022)

The contact owns a 2016 Hyundai Sonata Plug-In Hybrid. The contact stated while the vehicle was approaching a stop sign, the vehicle stalled. The contact stated there was no warning light illuminated. The vehicle was not drivable. The contact stated he manually pushed the vehicle to the side of the roadway. The contact went back with his trailer and trailered the vehicle to the local dealer where it was diagnosed with needing the Hybrid control unit to be replaced. The vehicle was not repaired. The manufacturer had been informed of the failure.…

Owner-reported narrative. 120,000 miles reported. Look up ODI 11472475 at NHTSA ↗

Owner report 11490124 · 2022-10-20 (October 20, 2022)

The contact owns a 2016 Hyundai Sonata Plug-In Hybrid. The contact stated while driving 70 MPH or faster in Hybrid Mode, the vehicle stalled. The HEV error warning light was displayed on the instrument panel. The check engine warning light was also illuminated. The contact turned off the vehicle and disengaged the HEV Mode for the vehicle to restart and function as intended. The failure occurred three times. The vehicle had been taken to the dealer however, the mechanics were unable to determine the cause of the failure. The vehicle was not rep…

Owner-reported narrative. 66,000 miles reported. Look up ODI 11490124 at NHTSA ↗

Owner report 11079939 · 2018-03-17 (March 17, 2018)

14 MARCH 2018 10:30 AM, 70 MPH ON US 101 TO SAN FRANCISCO, HEV MODE, RAINY WEATHER, 4 PASSENGERS FOR A BUSINESS MEETING. CAR STEERING SHUDDERED AS IF THE TIRES SLIPPED AND SPUN ON THE WET PAVEMENT. ESC, BRAKE, AND AUTO HOLD LIGHTS TURNED YELLOW. WAS ABLE TO DRIVE THE CAR NORMALLY TO REACH DESTINATION, PARKED, ATTENDED MEETING, AND STARTED DRIVING BACK HOME WITH MY PASSENGERS AT 3PM. ESC, BRAKE, AND AUTO HOLD LIGHTS WERE STILL ON. HEV MODE. 30 MINUTES LATER, I-280 AT 65+ MPH, ENGINE POWER DRASTICALLY REDUCED ABRUPTLY, CAR STARTED TO SLOW DOWN A…

Owner-reported narrative. 12,470 miles reported. Look up ODI 11079939 at NHTSA ↗

Explore the data

Vehicle analysis explorer

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

Data completeness

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

57.1%Usable mileage36 / 63 records

100.0%Valid incident date63 / 63 records

100.0%Valid filing date63 / 63 records

100.0%Ordered incident and filing dates63 / 63 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	2016	2017	2018	2019
Engine	1869.2% ODI 10873672 I SAW ENGINE POWERTRAIN PROBLEM LIGHT ON MY CAR SCREEN. SO I WENT TO CAPITAL HILL HYNDAI DEALER. I WAITED MORE THAN 6,5HOUR WITH EATING BREAKFAST AND LUNCH AT NEAR MALL. HYUNDAI EXPLAINED JUST GAS CAP TIGHTING PROBLEM. THEY NEVER EXPLAINED THE PROCESS ABOUT SIX AND HALF HOUR FIXING. I NEED DETAIL EXPLANATION ABOUT SIX HOUR FIXING PROCESS AND SINCERE APOLOGY ABOUT THE ENGINE PROBLEM SIGN IN ONE WEEK AFTER BUYING NEW CAR. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR Look up ODI 10873672 at NHTSA ↗	1753.1% ODI 10938754 · 1,858 mi FIRST EXTENDED DRIVE OF NEW CAR, CHECK ENGINE LIGHT CAME ON. TOOK IT TO DEALER FOR SERVICE, WAS TOLD I HAD "BAD FUEL" THAT THEY TESTED A SAMPLE AND FOUND E85 (ETHANOL) IN IT, WHICH IS NOT COVERED BY HYUNDAI NEW CAR WARRANTY FOR PLUG-IN HYBRID ELECTRIC VEHICLES. I PAID $828 TO HAVE FUEL DRAINED AND REPLACED, FUEL INJECTION CLEANING, AND DECARBONIZING AND THROTTLE BODY CLEANING. CHECK ENGINE LIGHT WENT AWAY, BUT TURNED BACK ON A FEW DAYS LATER. AGAIN TOOK IT TO DEALER BUT THEY WERE UNABLE TO GET IT TO TURN ON AFTER I LEFT IT, SO RETURNED THE … Look up ODI 10938754 at NHTSA ↗	0Unavailable No examples available for this selection.	120.0% ODI 11492604 I was traveling on a highway when a "hybrid system warning" suddenly appeared on the dashboard. Every dashboard warning light illuminated. The car began to lose power. I exited the highway immediately and the car began to have sporadic power and was "lurching." I immediately pulled onto the shoulder and at that time another warning on the dash appeared within a minute or two of the first warning that said "shut engine off." The computer screen began to flash on and of and the windows would not roll up smoothly. When the tow truck arrived t… Look up ODI 11492604 at NHTSA ↗
Electrical System	1246.2% ODI 11024125 · 32,284 mi MY SONATA PHEV HAD HYBRID SYSTEM FAILED NOT ONCE, BUT TWICE WITHIN A SPAN OF 1.5 MONTHS. IT'S BEEN HARDLY 1.5 YEARS SINCE I HAD BOUGHT THIS CAR. IN BOTH CASES THE CHECK HYBRID SYSTEM WARNING COMES UP AND ENGINE LOOSES TOTAL POWER. THE 1ST TIME IT HAPPENED, IT WAS IN THE MIDDLE OF A BUSY 405 FREEWAY AND WAS LEFT ALL OF A SUDDEN WITH NO POWER ON THE ENGINE. EXTREMELY DANGEROUS AND LIFE THREATENING PROBLEM TO FACE WITH. WITH WHATEVER POWER WAS LEFT, WAS ABLE TO COAST TO THE RAMP ON THE RIGHT. STOPPING ANYWHERE IN 405 FREEWAY IS ABSOLUTELY DANGEROU… Look up ODI 11024125 at NHTSA ↗	1134.4% ODI 10966358 · 2,900 mi ON 3/15/2017 AROUND 8AM, I STARTED MY CAR TO LEAVE FOR WORK AND THE CAR SHOWED A WARNING "CHECK HYBRID SYSTEM" AND THE CORRESPONDING WARNING LIGHT CAME ON. THE GASOLINE ENGINE ALSO STARTED RIGHT AWAY AND STAYED ON, EVEN THOUGH THE EV BATTERY WAS FULL. THE ENGINE REMAINED ON THROUGHOUT MY COMMUTE TO WORK AND BACK TO HOME IN THE EVENING. I PLUGGED THE CAR IN MY GARAGE FOR CHARGING OVERNIGHT WITH THE TIMER SET TO START THE CHARGING AT 10PM. AROUND 10:45PM, MY WIFE AND I OPENED THE INTERNAL GARAGE DOOR FROM INSIDE THE HOUSE AND IMMEDIATELY SMELLED … Look up ODI 10966358 at NHTSA ↗	0Unavailable No examples available for this selection.	240.0% ODI 11492604 I was traveling on a highway when a "hybrid system warning" suddenly appeared on the dashboard. Every dashboard warning light illuminated. The car began to lose power. I exited the highway immediately and the car began to have sporadic power and was "lurching." I immediately pulled onto the shoulder and at that time another warning on the dash appeared within a minute or two of the first warning that said "shut engine off." The computer screen began to flash on and of and the windows would not roll up smoothly. When the tow truck arrived t… Look up ODI 11492604 at NHTSA ↗
Unknown Or Other	519.2% ODI 11013127 · 16,700 mi THE VEHICLE WILL NOT CHARGE THE HYBRID BATTERY WHEN PROPERLY PLUGGED IN, WITH EITHER 110V OR 220V PLUG. THIS HAPPENED PREVIOUSLY AND HYUNDAI REPAIRED IT WITH A PART COSTING AROUND $2,000 THEY TOLD ME (IT WAS UNDER WARRANTY AND COST ME NOTHING). HAS BEEN IN THE SHOP CONTINUALLY SINCE JULY 7, 2017 (31 DAYS!) THIS TIME. THE VEHICLE WAS STATIONARY, IN MY GARAGE. THIS PROBLEM WAS NOTICED IN THE PAST (NOT CHARGING OVERNIGHT), BUT NEVER STAYED A PROBLEM--I WAS ABLE TO GET IT TO CHARGE USUALLY THE VERY NEXT DAY. THIS CURRENT PROBLEM BEGAN AROUND JULY 3… Look up ODI 11013127 at NHTSA ↗	721.9% ODI 11091575 · 40 mi 2017 HYUNDAI SONATA PLUG IN FEATURE FORWARD COLLISION WARNING ON FRONT STICKER SHOULD HAVE ALSO SAID IT ONLY WORKS ABOVE 25MPH AND IT DOES NOT ACTIVATE WARNING SOON ENOUGH SO I THINK ITS CRASH ZONE AND SHOUDL BE ADJUSTABLE AND TESTABLE IT IS NOT NTSB I HOPE CAN HELP MANUFACTURE A STANDARD TERMINOLOGY WHEN IT COME TO SALES AND RELEASE OF HYUNDAI LIABLE IN CASE FAILURE , YES I KNOW THEY WILL NOT COVER FAILURE UNDER MANY CONDITIONS, BUT THE SYSTEM I BROUGHT TO HYUNDAI 2X ONE IN JULY 2017 AND ONE IN MAR 2018 I WAS TOLD FRONTSIDE COLLISION W… Look up ODI 11091575 at NHTSA ↗	0Unavailable No examples available for this selection.	120.0% ODI 11353282 · 56 mi THE TOUCH SCREEN RADIO IS INEFFECTIVE WHEN TUNING TO SIRIUSXM. IT JUST SITS ON UPDATING AND NOTHING ELSE YOU PRESS WORKS. I HAVE HAD MULTIPLE MECHANICS LOOK AT IT, PULLED FUSES, RESETS AND NOTHING FIXES THE ISSUE. FROM RESEARCH ONLINE IT APPEARS THIS HAS BEEN AN ONGOING ISSUE FOR YEARS WITH HYUNDAI TOUCH SCREENS. THEY SAY THERE'S NOTHING THEY CAN DO, BUT I LITERALLY JUST BOUGHT THE CAR. Look up ODI 11353282 at NHTSA ↗
Fuel/Propulsion System	27.7% ODI 11088803 · 37,000 mi ENGINE/ELECTRICAL SHUT DOWN OCCURRED ON INTERSTATE AT HIGH SPEED IN TRAFFIC MAY 2017 NARROWLY MISSED BEING HIT FROM BEHIND. MULTIPLE ISSUES WITH CHECK ENGINE LIGHT, RELAY WAS REPLACED. WORKED FOR AWHILE. NOW (APRIL 2018) BACK IN SHOP FOR SAME PROBLEM - ENGINE SHUT DOWN AND WOULD NOT START HAD TO HAVE TOWED TO HYUNDAI DEALER. CHECKED RECALLS, FOUND THEY KNOW THERE IS A PROBLEM BUT NO REMEDY FOR IT. WOULD APPRECIATE A BUY BACK PLEASE. CAN'T SELL IT OR TRADE IT KNOWING IT IS DANGEROUS. CASE #10258851 Look up ODI 11088803 at NHTSA ↗	618.8% ODI 10966358 · 2,900 mi ON 3/15/2017 AROUND 8AM, I STARTED MY CAR TO LEAVE FOR WORK AND THE CAR SHOWED A WARNING "CHECK HYBRID SYSTEM" AND THE CORRESPONDING WARNING LIGHT CAME ON. THE GASOLINE ENGINE ALSO STARTED RIGHT AWAY AND STAYED ON, EVEN THOUGH THE EV BATTERY WAS FULL. THE ENGINE REMAINED ON THROUGHOUT MY COMMUTE TO WORK AND BACK TO HOME IN THE EVENING. I PLUGGED THE CAR IN MY GARAGE FOR CHARGING OVERNIGHT WITH THE TIMER SET TO START THE CHARGING AT 10PM. AROUND 10:45PM, MY WIFE AND I OPENED THE INTERNAL GARAGE DOOR FROM INSIDE THE HOUSE AND IMMEDIATELY SMELLED … Look up ODI 10966358 at NHTSA ↗	0Unavailable No examples available for this selection.	360.0% ODI 11365546 · 24,922 mi THE MESSAGE "HYBRID SYSTEM FAILURE" SUDDENLY DISPLAYED AND THE VEHICLE LOST POWER AND STALLED. THIS OCCURED ON HYW (65MPH) AND NEARLY CAUSED WRECK FROM BEHIND Look up ODI 11365546 at NHTSA ↗
Power Train	311.5% ODI 11044785 · 21,000 mi VEHICLE WAS IN MOTION WHEN THE PHEV WARNING ILLUMINATED AND THE GASOLINE ENGINE SHUT OFF. THE VEHICLE LOST ALL PROPULSION. IT REFUSED TO ENGAGE THE GASOLINE OR ELECTRIC MOTOR TO MOVE OUT OF A DANGEROUS SITUATION. THE VEHICLE WAS TOWED TO THE HYUNDAI DEALER WHERE IT WAS DIAGNOSED AS A FAILED HYBRID BATTERY. Look up ODI 11044785 at NHTSA ↗	412.5% ODI 11091575 · 40 mi 2017 HYUNDAI SONATA PLUG IN FEATURE FORWARD COLLISION WARNING ON FRONT STICKER SHOULD HAVE ALSO SAID IT ONLY WORKS ABOVE 25MPH AND IT DOES NOT ACTIVATE WARNING SOON ENOUGH SO I THINK ITS CRASH ZONE AND SHOUDL BE ADJUSTABLE AND TESTABLE IT IS NOT NTSB I HOPE CAN HELP MANUFACTURE A STANDARD TERMINOLOGY WHEN IT COME TO SALES AND RELEASE OF HYUNDAI LIABLE IN CASE FAILURE , YES I KNOW THEY WILL NOT COVER FAILURE UNDER MANY CONDITIONS, BUT THE SYSTEM I BROUGHT TO HYUNDAI 2X ONE IN JULY 2017 AND ONE IN MAR 2018 I WAS TOLD FRONTSIDE COLLISION W… Look up ODI 11091575 at NHTSA ↗	0Unavailable No examples available for this selection.	240.0% ODI 11492604 I was traveling on a highway when a "hybrid system warning" suddenly appeared on the dashboard. Every dashboard warning light illuminated. The car began to lose power. I exited the highway immediately and the car began to have sporadic power and was "lurching." I immediately pulled onto the shoulder and at that time another warning on the dash appeared within a minute or two of the first warning that said "shut engine off." The computer screen began to flash on and of and the windows would not roll up smoothly. When the tow truck arrived t… Look up ODI 11492604 at NHTSA ↗
Hybrid Propulsion System	311.5% ODI 11472475 · 120,000 mi The contact owns a 2016 Hyundai Sonata Plug-In Hybrid. The contact stated while the vehicle was approaching a stop sign, the vehicle stalled. The contact stated there was no warning light illuminated. The vehicle was not drivable. The contact stated he manually pushed the vehicle to the side of the roadway. The contact went back with his trailer and trailered the vehicle to the local dealer where it was diagnosed with needing the Hybrid control unit to be replaced. The vehicle was not repaired. The manufacturer had been informed of the failure.… Look up ODI 11472475 at NHTSA ↗	00.0% No examples available for this selection.	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.
Electronic Stability Control (Esc)	00.0% No examples available for this selection.	13.1% ODI 11079939 · 12,470 mi 14 MARCH 2018 10:30 AM, 70 MPH ON US 101 TO SAN FRANCISCO, HEV MODE, RAINY WEATHER, 4 PASSENGERS FOR A BUSINESS MEETING. CAR STEERING SHUDDERED AS IF THE TIRES SLIPPED AND SPUN ON THE WET PAVEMENT. ESC, BRAKE, AND AUTO HOLD LIGHTS TURNED YELLOW. WAS ABLE TO DRIVE THE CAR NORMALLY TO REACH DESTINATION, PARKED, ATTENDED MEETING, AND STARTED DRIVING BACK HOME WITH MY PASSENGERS AT 3PM. ESC, BRAKE, AND AUTO HOLD LIGHTS WERE STILL ON. HEV MODE. 30 MINUTES LATER, I-280 AT 65+ MPH, ENGINE POWER DRASTICALLY REDUCED ABRUPTLY, CAR STARTED TO SLOW DOWN A… Look up ODI 11079939 at NHTSA ↗	0Unavailable No examples available for this selection.	00.0% No examples available for this selection.
Forward Collision Avoidance	00.0% No examples available for this selection.	13.1% ODI 11089955 · 13,000 mi TL* THE CONTACT OWNS A 2017 HYUNDAI SONATA HYBRID. WHILE DRIVING APPROXIMATELY 20 MPH, THE FRONT SIDE COLLISION WARNING SYSTEM FAILED TO FUNCTION. THE VEHICLE WAS TAKEN TO STEVENS CREEK HYUNDAI (4425 STEVENS CREEK BLVD, SANTA CLARA, CA 95051), BUT THE FAILURE WAS UNABLE TO BE DIAGNOSED. THE VEHICLE WAS NOT REPAIRED AND THE FAILURE RECURRED. THE MANUFACTURER WAS NOT CONTACTED. THE APPROXIMATE FAILURE MILEAGE WAS 13,000. Look up ODI 11089955 at NHTSA ↗	0Unavailable No examples available for this selection.	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
Engine	11,700–41,100 mi	25,650 mi	21	ODI 11024125 · 32,284 mi MY SONATA PHEV HAD HYBRID SYSTEM FAILED NOT ONCE, BUT TWICE WITHIN A SPAN OF 1.5 MONTHS. IT'S BEEN HARDLY 1.5 YEARS SINCE I HAD BOUGHT THIS CAR. IN BOTH CASES THE CHECK HYBRID SYSTEM WARNING COMES UP AND ENGINE LOOSES TOTAL POWER. THE 1ST TIME IT HAPPENED, IT WAS IN THE MIDDLE OF A BUSY 405 FREEWAY AND WAS LEFT ALL OF A SUDDEN WITH NO POWER ON THE ENGINE. EXTREMELY DANGEROUS AND LIFE THREATENING PROBLEM TO FACE WITH. WITH WHATEVER POWER WAS LEFT, WAS ABLE TO COAST TO THE RAMP ON THE RIGHT. STOPPING ANYWHERE IN 405 FREEWAY IS ABSOLUTELY DANGEROU… Look up ODI 11024125 at NHTSA ↗ ODI 11031772 · 9,500 mi OVER THE PAST TWO MONTHS, I HAVE HAD THE YELLOW ENGINE LIGHT COME ON. EVEN THOUGH THERE WERE NO ISSUES RELATED TO PERFORMANCE NOTED, I TOOK VEHICLE TO MY GARAGE TO DIAGNOSE. THE DIAGNOSIS DID NOT FIND ANY ISSUE, BUT MECHANIC PROCEEDED TO CHECK THE GAS COVER CAP. LO AND BEHOLD, BOTH TIMES, REMOVING THE CAP AND REPLACING SEEMED TO CORRECT THE ISSUE AND THE YELLOW ENGINE LIGHT WENT OFF. QUITE ANNOYING AS DON'T WANT TO HAVE TO KEEP CHECKING IF LIGHT COMES ON INCORRECTLY AND NOT ADDRESS IF THERE WAS INDEED A PROBLEM TO CORRECT. Look up ODI 11031772 at NHTSA ↗ ODI 11044785 · 21,000 mi VEHICLE WAS IN MOTION WHEN THE PHEV WARNING ILLUMINATED AND THE GASOLINE ENGINE SHUT OFF. THE VEHICLE LOST ALL PROPULSION. IT REFUSED TO ENGAGE THE GASOLINE OR ELECTRIC MOTOR TO MOVE OUT OF A DANGEROUS SITUATION. THE VEHICLE WAS TOWED TO THE HYUNDAI DEALER WHERE IT WAS DIAGNOSED AS A FAILED HYBRID BATTERY. Look up ODI 11044785 at NHTSA ↗
Electrical System	13,000–30,000 mi	25,000 mi	13	ODI 11024125 · 32,284 mi MY SONATA PHEV HAD HYBRID SYSTEM FAILED NOT ONCE, BUT TWICE WITHIN A SPAN OF 1.5 MONTHS. IT'S BEEN HARDLY 1.5 YEARS SINCE I HAD BOUGHT THIS CAR. IN BOTH CASES THE CHECK HYBRID SYSTEM WARNING COMES UP AND ENGINE LOOSES TOTAL POWER. THE 1ST TIME IT HAPPENED, IT WAS IN THE MIDDLE OF A BUSY 405 FREEWAY AND WAS LEFT ALL OF A SUDDEN WITH NO POWER ON THE ENGINE. EXTREMELY DANGEROUS AND LIFE THREATENING PROBLEM TO FACE WITH. WITH WHATEVER POWER WAS LEFT, WAS ABLE TO COAST TO THE RAMP ON THE RIGHT. STOPPING ANYWHERE IN 405 FREEWAY IS ABSOLUTELY DANGEROU… Look up ODI 11024125 at NHTSA ↗ ODI 11044785 · 21,000 mi VEHICLE WAS IN MOTION WHEN THE PHEV WARNING ILLUMINATED AND THE GASOLINE ENGINE SHUT OFF. THE VEHICLE LOST ALL PROPULSION. IT REFUSED TO ENGAGE THE GASOLINE OR ELECTRIC MOTOR TO MOVE OUT OF A DANGEROUS SITUATION. THE VEHICLE WAS TOWED TO THE HYUNDAI DEALER WHERE IT WAS DIAGNOSED AS A FAILED HYBRID BATTERY. Look up ODI 11044785 at NHTSA ↗ ODI 11058626 · 26,200 mi WHILE DRIVING THE CAR AT 68 MPH IN HOV LANE, HYBRID SYSTEM ALERT LIGHT UP AND THE ENGINE COMPLETELY LOST POWER AND SHUT DOWN. VERY DANGEROUS SITUATION AND LUCKY ABLE TO DIRECT THE CAR TO RIGHT SIDE AND STOP AND WAIT FOR TOWING. THIS HAPPEN DURING TRAFFIC WAS SLIGHTLY JAM SO ABLE TO DRIVE TO THE RIGHT SIDE WHEN OTHER CARS ARE SLOWING DOWN IN REGULAR LANE. CANNOT IMAGINE IF THERE IS NO TRAFFIC JAM, HIGH POTENTIAL TO GET INTO ACCIDENT AND LIFE THREATENING SITUATION. WITH THE DEALER FOR FIVE DAYS AND THEY CANNOT PINPOINT THE EXACT PROBLEM AND KEEP… Look up ODI 11058626 at NHTSA ↗
Unknown Or Other	6,427–30,559 mi	23,350 mi	8	ODI 11013127 · 16,700 mi THE VEHICLE WILL NOT CHARGE THE HYBRID BATTERY WHEN PROPERLY PLUGGED IN, WITH EITHER 110V OR 220V PLUG. THIS HAPPENED PREVIOUSLY AND HYUNDAI REPAIRED IT WITH A PART COSTING AROUND $2,000 THEY TOLD ME (IT WAS UNDER WARRANTY AND COST ME NOTHING). HAS BEEN IN THE SHOP CONTINUALLY SINCE JULY 7, 2017 (31 DAYS!) THIS TIME. THE VEHICLE WAS STATIONARY, IN MY GARAGE. THIS PROBLEM WAS NOTICED IN THE PAST (NOT CHARGING OVERNIGHT), BUT NEVER STAYED A PROBLEM--I WAS ABLE TO GET IT TO CHARGE USUALLY THE VERY NEXT DAY. THIS CURRENT PROBLEM BEGAN AROUND JULY 3… Look up ODI 11013127 at NHTSA ↗ ODI 11121258 · 8,550 mi HYBRID SYSTEM WARNING LIGHT CAME ON SEVERAL TIMES. NOW IT IS NOT OPERABLE. CAR WAS CHECKED BY LOCAL HYUNDAI DEALER SERVICE 3 DAYS AGO. THEY DID NOT HAVE PARTS AT THE TIME OF SERVICE, THEY DID NOT PERFORM THE RECALL SERVICE. I WAS ABLE TO DRIVE IT BACK HOME SAFELY, BUT WHEN I TRIED TO START THE CAR AGAIN 3 DAYS LATER IN THE EVENING, IT GAVE WARNINGS. CAR IS NOT OPERABLE. Look up ODI 11121258 at NHTSA ↗ ODI 11144863 · 30,000 mi "TAKATA RECALL" AUGUST 25TH THE CAR WAS DRIVEN INTO SOME HIGH WATER AND WAS PARKED BY A GAS STATION NEAR GREEN ROAD AND ALDEAN WESTFIELD R. THE CAR WAS UNDERWATER FROM THE FRONT END. I HAVE TAKEN THE VEHICLE IN FOR REPAIR MULTIPLE TIMES FOR REPAIR. FROM WARRANTY ISSUES TO FLOOD REPAIR, BOTH CAN'T GIVE ME A STRAIGHT ANSWER TO WHAT IS WRONG WITH THE CAR. THE CAR STOPS AND COMPLETELY SHUTS OFF HYBRID MALFUNCTION. WE DONT HAVE ANY DOCUMENTS, THE DEALERSHIP HAS COPYS OF ALL REPARS. Look up ODI 11144863 at NHTSA ↗
Fuel/Propulsion System	Too few reports for a range	24,961 mi	4 (sparse)	ODI 11088803 · 37,000 mi ENGINE/ELECTRICAL SHUT DOWN OCCURRED ON INTERSTATE AT HIGH SPEED IN TRAFFIC MAY 2017 NARROWLY MISSED BEING HIT FROM BEHIND. MULTIPLE ISSUES WITH CHECK ENGINE LIGHT, RELAY WAS REPLACED. WORKED FOR AWHILE. NOW (APRIL 2018) BACK IN SHOP FOR SAME PROBLEM - ENGINE SHUT DOWN AND WOULD NOT START HAD TO HAVE TOWED TO HYUNDAI DEALER. CHECKED RECALLS, FOUND THEY KNOW THERE IS A PROBLEM BUT NO REMEDY FOR IT. WOULD APPRECIATE A BUY BACK PLEASE. CAN'T SELL IT OR TRADE IT KNOWING IT IS DANGEROUS. CASE #10258851 Look up ODI 11088803 at NHTSA ↗ ODI 11099959 · 25,000 mi I WAS GOING ABOUT 70 MPH IN FULL ELECTRIC MODE AND THE CAR REMOVED ALL POWER FROM MY GAS PEDAL, THERE WAS LOTS OF DINGING SOUNDS AND THE DASH SAID "CHECK HYBRID SYSTEM, TURN YOUR CAR OFF". LUCKILY I WAS ALREADY TO THE FAR RIGHT SO I COULD JUST PULL TOT HE SHOULDER AND STOP THE CAR, THE BREAKS AND STEERING WERE STILL WORKING. TOWED TO THE DEALERSHIP, HOPING THE MARCH 2018 RECALL IS THE FIX. I HAD TO CALL AAA, ALL BLUE LINK CAPABILITIES STOPPED WORKING AS WELL. 2016 PLUGIN WITH ABOUT 25,000 MILES. Look up ODI 11099959 at NHTSA ↗ ODI 10966358 · 2,900 mi ON 3/15/2017 AROUND 8AM, I STARTED MY CAR TO LEAVE FOR WORK AND THE CAR SHOWED A WARNING "CHECK HYBRID SYSTEM" AND THE CORRESPONDING WARNING LIGHT CAME ON. THE GASOLINE ENGINE ALSO STARTED RIGHT AWAY AND STAYED ON, EVEN THOUGH THE EV BATTERY WAS FULL. THE ENGINE REMAINED ON THROUGHOUT MY COMMUTE TO WORK AND BACK TO HOME IN THE EVENING. I PLUGGED THE CAR IN MY GARAGE FOR CHARGING OVERNIGHT WITH THE TIMER SET TO START THE CHARGING AT 10PM. AROUND 10:45PM, MY WIFE AND I OPENED THE INTERNAL GARAGE DOOR FROM INSIDE THE HOUSE AND IMMEDIATELY SMELLED … Look up ODI 10966358 at NHTSA ↗
Power Train	Too few reports for a range	14,775 mi	4 (sparse)	ODI 11044785 · 21,000 mi VEHICLE WAS IN MOTION WHEN THE PHEV WARNING ILLUMINATED AND THE GASOLINE ENGINE SHUT OFF. THE VEHICLE LOST ALL PROPULSION. IT REFUSED TO ENGAGE THE GASOLINE OR ELECTRIC MOTOR TO MOVE OUT OF A DANGEROUS SITUATION. THE VEHICLE WAS TOWED TO THE HYUNDAI DEALER WHERE IT WAS DIAGNOSED AS A FAILED HYBRID BATTERY. Look up ODI 11044785 at NHTSA ↗ ODI 11121258 · 8,550 mi HYBRID SYSTEM WARNING LIGHT CAME ON SEVERAL TIMES. NOW IT IS NOT OPERABLE. CAR WAS CHECKED BY LOCAL HYUNDAI DEALER SERVICE 3 DAYS AGO. THEY DID NOT HAVE PARTS AT THE TIME OF SERVICE, THEY DID NOT PERFORM THE RECALL SERVICE. I WAS ABLE TO DRIVE IT BACK HOME SAFELY, BUT WHEN I TRIED TO START THE CAR AGAIN 3 DAYS LATER IN THE EVENING, IT GAVE WARNINGS. CAR IS NOT OPERABLE. Look up ODI 11121258 at NHTSA ↗ ODI 11091575 · 40 mi 2017 HYUNDAI SONATA PLUG IN FEATURE FORWARD COLLISION WARNING ON FRONT STICKER SHOULD HAVE ALSO SAID IT ONLY WORKS ABOVE 25MPH AND IT DOES NOT ACTIVATE WARNING SOON ENOUGH SO I THINK ITS CRASH ZONE AND SHOUDL BE ADJUSTABLE AND TESTABLE IT IS NOT NTSB I HOPE CAN HELP MANUFACTURE A STANDARD TERMINOLOGY WHEN IT COME TO SALES AND RELEASE OF HYUNDAI LIABLE IN CASE FAILURE , YES I KNOW THEY WILL NOT COVER FAILURE UNDER MANY CONDITIONS, BUT THE SYSTEM I BROUGHT TO HYUNDAI 2X ONE IN JULY 2017 AND ONE IN MAR 2018 I WAS TOLD FRONTSIDE COLLISION W… Look up ODI 11091575 at NHTSA ↗
Hybrid Propulsion System	Too few reports for a range	66,000 mi	3 (sparse)	ODI 11472475 · 120,000 mi The contact owns a 2016 Hyundai Sonata Plug-In Hybrid. The contact stated while the vehicle was approaching a stop sign, the vehicle stalled. The contact stated there was no warning light illuminated. The vehicle was not drivable. The contact stated he manually pushed the vehicle to the side of the roadway. The contact went back with his trailer and trailered the vehicle to the local dealer where it was diagnosed with needing the Hybrid control unit to be replaced. The vehicle was not repaired. The manufacturer had been informed of the failure.… Look up ODI 11472475 at NHTSA ↗ ODI 11490124 · 66,000 mi The contact owns a 2016 Hyundai Sonata Plug-In Hybrid. The contact stated while driving 70 MPH or faster in Hybrid Mode, the vehicle stalled. The HEV error warning light was displayed on the instrument panel. The check engine warning light was also illuminated. The contact turned off the vehicle and disengaged the HEV Mode for the vehicle to restart and function as intended. The failure occurred three times. The vehicle had been taken to the dealer however, the mechanics were unable to determine the cause of the failure. The vehicle was not rep… Look up ODI 11490124 at NHTSA ↗ ODI 11529173 · 65,000 mi The contact owns a 2016 Hyundai Sonata Plug-In Hybrid. The contact stated that on three separate occasions while driving approximately 65 MPH, the “Check Hybrid System - Turn Off Engine” message was displayed. The check engine warning light illuminated. The contact then stated that the vehicle decelerated and went into LIMP Mode. The vehicle was towed to the dealer however, the failure could not be duplicated. The contact stated that the failure recurred. The vehicle was taken back to the dealer but the failure could not be duplicated; however,… Look up ODI 11529173 at NHTSA ↗
Electronic Stability Control (Esc)	Too few reports for a range	12,470 mi	1 (sparse)	ODI 11079939 · 12,470 mi 14 MARCH 2018 10:30 AM, 70 MPH ON US 101 TO SAN FRANCISCO, HEV MODE, RAINY WEATHER, 4 PASSENGERS FOR A BUSINESS MEETING. CAR STEERING SHUDDERED AS IF THE TIRES SLIPPED AND SPUN ON THE WET PAVEMENT. ESC, BRAKE, AND AUTO HOLD LIGHTS TURNED YELLOW. WAS ABLE TO DRIVE THE CAR NORMALLY TO REACH DESTINATION, PARKED, ATTENDED MEETING, AND STARTED DRIVING BACK HOME WITH MY PASSENGERS AT 3PM. ESC, BRAKE, AND AUTO HOLD LIGHTS WERE STILL ON. HEV MODE. 30 MINUTES LATER, I-280 AT 65+ MPH, ENGINE POWER DRASTICALLY REDUCED ABRUPTLY, CAR STARTED TO SLOW DOWN A… Look up ODI 11079939 at NHTSA ↗
Forward Collision Avoidance	Too few reports for a range	13,000 mi	1 (sparse)	ODI 11089955 · 13,000 mi TL* THE CONTACT OWNS A 2017 HYUNDAI SONATA HYBRID. WHILE DRIVING APPROXIMATELY 20 MPH, THE FRONT SIDE COLLISION WARNING SYSTEM FAILED TO FUNCTION. THE VEHICLE WAS TAKEN TO STEVENS CREEK HYUNDAI (4425 STEVENS CREEK BLVD, SANTA CLARA, CA 95051), BUT THE FAILURE WAS UNABLE TO BE DIAGNOSED. THE VEHICLE WAS NOT REPAIRED AND THE FAILURE RECURRED. THE MANUFACTURER WAS NOT CONTACTED. THE APPROXIMATE FAILURE MILEAGE WAS 13,000. Look up ODI 11089955 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	0	None	No examples available for this selection.
2025-02	0	None	No examples available for this selection.
2025-03	1	None	ODI 11648675 While driving at a high rate of speed propulsion to the vehicle suddenly and without warning ceased, the electric and internal combustion engine were non-responsive (ICE stopped; hybrid motor didn't provide propulsion), the warning light said "Check Hybrid System. Turn off engine" I was put at risk because I was traveling at highway speed and was given no warning before the vehicle shut down. This has occurred nine times, I've reported all to Hyundai, they have had the car in the shop three times, the issue is not fixed. No, despite ODB2 er… Look up ODI 11648675 at NHTSA ↗
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	0	None	No examples available for this selection.
2025-09	1	None	ODI 11686903 While driving car stuttered check engine light and check hybrid system flashed. Check engine lights stayed on until getting home. Next day. I scanned and code p0b68 was set. Look up ODI 11686903 at NHTSA ↗
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	1	None	ODI 11725213 To the National Highway Traffic Safety Administration, I am filing this formal safety complaint regarding a dangerous engine failure incident involving my 2017 Hyundai Sonata Plug-in Hybrid. Description of Incident: While traveling on CA-85 near Mountain View, California, at approximately 65 miles per hour, the engine suddenly and without warning lost all power. The vehicle began to slow down involuntarily in active highway traffic, creating an immediate and serious risk of rear-end collision. The driver had no ability to maintain safe highw… Look up ODI 11725213 at NHTSA ↗
2026-04	1	None	ODI 11734703 I am reporting a serious safety issue involving a 2017 Hyundai Sonata Plug-in Hybrid (VIN: [XXX] ), originally purchased in California. While driving at approximately 70 mph on a highway, the vehicle suddenly lost all propulsion without warning and rapidly decelerated. This created a dangerous situation with surrounding traffic and put me and my family at risk. I had to quickly maneuver to the shoulder to avoid a potential collision. The vehicle was towed to an authorized Hyundai dealership in Utah, where it was diagnosed with a failure of th… Look up ODI 11734703 at NHTSA ↗
2026-05	1	None	ODI 11737182 On 12/20/25, the car - a Sonata plug-in hybrid - failed to start. When I pushed the "start" button, the dashboard display lit up w many clearly irrelevant error messages. Each time I pressed start, somewhat fewer error messages blasted toward me, and finally, no response at all. On 12/21/2026, the tow driver said it was the 12-volt battery. He gave us a jump start and we drove a few blocks. However, it failed at the turn lane while waiting for the light to turn. We turned it back on, bought a new battery, had it installed. On 12/29/25, my hu… Look up ODI 11737182 at NHTSA ↗
2026-06	0	None	No examples available for this selection.
2026-07	1	None	ODI 11752871 The high voltage battery will no longer charge neither from being plugged in to the charger on the wall nor from the buikt in system onboard the car. There are warning lights saying the inverter coolant is low but the reservoir is at the proper level. I suspect the coolant for the Hybrid charging inverter is bad and crystalizes causing blockages in the inverter coolant system. My car refuses to charge for the last 2 years. After a few seconds (about 7-10) the car shuts off the charging system when plugged in. And now that summer heat us he… Look up ODI 11752871 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

2018: 0 complaints · 2019: 2 complaints

Equal observation windows
Model year	Through age 0	Through age 1	Through age 2
2018	0	0	0
2019	0	2	2

Date coverage across each selected cohort

Date basis for all complaints in selected model years
Year	Incident dates used	Filing date fallbacks	Excluded dates
2018	0	0	0
2019	5	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	Engine	Electrical System	Unknown Or Other	Fuel/Propulsion System	Power Train	Hybrid Propulsion System	Electronic Stability Control (Esc)	Forward Collision Avoidance
Engine	—	14 ODI 11024125 · 32,284 mi MY SONATA PHEV HAD HYBRID SYSTEM FAILED NOT ONCE, BUT TWICE WITHIN A SPAN OF 1.5 MONTHS. IT'S BEEN HARDLY 1.5 YEARS SINCE I HAD BOUGHT THIS CAR. IN BOTH CASES THE CHECK HYBRID SYSTEM WARNING COMES UP AND ENGINE LOOSES TOTAL POWER. THE 1ST TIME IT HAPPENED, IT WAS IN THE MIDDLE OF A BUSY 405 FREEWAY AND WAS LEFT ALL OF A SUDDEN WITH NO POWER ON THE ENGINE. EXTREMELY DANGEROUS AND LIFE THREATENING PROBLEM TO FACE WITH. WITH WHATEVER POWER WAS LEFT, WAS ABLE TO COAST TO THE RAMP ON THE RIGHT. STOPPING ANYWHERE IN 405 FREEWAY IS ABSOLUTELY DANGEROU… Look up ODI 11024125 at NHTSA ↗ ODI 11044785 · 21,000 mi VEHICLE WAS IN MOTION WHEN THE PHEV WARNING ILLUMINATED AND THE GASOLINE ENGINE SHUT OFF. THE VEHICLE LOST ALL PROPULSION. IT REFUSED TO ENGAGE THE GASOLINE OR ELECTRIC MOTOR TO MOVE OUT OF A DANGEROUS SITUATION. THE VEHICLE WAS TOWED TO THE HYUNDAI DEALER WHERE IT WAS DIAGNOSED AS A FAILED HYBRID BATTERY. Look up ODI 11044785 at NHTSA ↗ ODI 11058626 · 26,200 mi WHILE DRIVING THE CAR AT 68 MPH IN HOV LANE, HYBRID SYSTEM ALERT LIGHT UP AND THE ENGINE COMPLETELY LOST POWER AND SHUT DOWN. VERY DANGEROUS SITUATION AND LUCKY ABLE TO DIRECT THE CAR TO RIGHT SIDE AND STOP AND WAIT FOR TOWING. THIS HAPPEN DURING TRAFFIC WAS SLIGHTLY JAM SO ABLE TO DRIVE TO THE RIGHT SIDE WHEN OTHER CARS ARE SLOWING DOWN IN REGULAR LANE. CANNOT IMAGINE IF THERE IS NO TRAFFIC JAM, HIGH POTENTIAL TO GET INTO ACCIDENT AND LIFE THREATENING SITUATION. WITH THE DEALER FOR FIVE DAYS AND THEY CANNOT PINPOINT THE EXACT PROBLEM AND KEEP… Look up ODI 11058626 at NHTSA ↗	3 ODI 11121258 · 8,550 mi HYBRID SYSTEM WARNING LIGHT CAME ON SEVERAL TIMES. NOW IT IS NOT OPERABLE. CAR WAS CHECKED BY LOCAL HYUNDAI DEALER SERVICE 3 DAYS AGO. THEY DID NOT HAVE PARTS AT THE TIME OF SERVICE, THEY DID NOT PERFORM THE RECALL SERVICE. I WAS ABLE TO DRIVE IT BACK HOME SAFELY, BUT WHEN I TRIED TO START THE CAR AGAIN 3 DAYS LATER IN THE EVENING, IT GAVE WARNINGS. CAR IS NOT OPERABLE. Look up ODI 11121258 at NHTSA ↗ ODI 11520782 Occurrence: This has been a recurring issue for over a year (over a year, might be closer to two years now) for our PHEV Sonata. It has happened approximately 10 times. Problem: Total engine shutdown when driving the car. "Shut down engine" type error message pops up and cannot accelerate. Steering still works, but it can be hard to pull over due to lack of engine power. The car can be restarted after shutting down, but must first come to a complete stop and into Park. Safety Issue: The car stops working. Obviously, this would be quite dang… Look up ODI 11520782 at NHTSA ↗ ODI 11734703 I am reporting a serious safety issue involving a 2017 Hyundai Sonata Plug-in Hybrid (VIN: [XXX] ), originally purchased in California. While driving at approximately 70 mph on a highway, the vehicle suddenly lost all propulsion without warning and rapidly decelerated. This created a dangerous situation with surrounding traffic and put me and my family at risk. I had to quickly maneuver to the shoulder to avoid a potential collision. The vehicle was towed to an authorized Hyundai dealership in Utah, where it was diagnosed with a failure of th… Look up ODI 11734703 at NHTSA ↗	6 ODI 11099959 · 25,000 mi I WAS GOING ABOUT 70 MPH IN FULL ELECTRIC MODE AND THE CAR REMOVED ALL POWER FROM MY GAS PEDAL, THERE WAS LOTS OF DINGING SOUNDS AND THE DASH SAID "CHECK HYBRID SYSTEM, TURN YOUR CAR OFF". LUCKILY I WAS ALREADY TO THE FAR RIGHT SO I COULD JUST PULL TOT HE SHOULDER AND STOP THE CAR, THE BREAKS AND STEERING WERE STILL WORKING. TOWED TO THE DEALERSHIP, HOPING THE MARCH 2018 RECALL IS THE FIX. I HAD TO CALL AAA, ALL BLUE LINK CAPABILITIES STOPPED WORKING AS WELL. 2016 PLUGIN WITH ABOUT 25,000 MILES. Look up ODI 11099959 at NHTSA ↗ ODI 10966358 · 2,900 mi ON 3/15/2017 AROUND 8AM, I STARTED MY CAR TO LEAVE FOR WORK AND THE CAR SHOWED A WARNING "CHECK HYBRID SYSTEM" AND THE CORRESPONDING WARNING LIGHT CAME ON. THE GASOLINE ENGINE ALSO STARTED RIGHT AWAY AND STAYED ON, EVEN THOUGH THE EV BATTERY WAS FULL. THE ENGINE REMAINED ON THROUGHOUT MY COMMUTE TO WORK AND BACK TO HOME IN THE EVENING. I PLUGGED THE CAR IN MY GARAGE FOR CHARGING OVERNIGHT WITH THE TIMER SET TO START THE CHARGING AT 10PM. AROUND 10:45PM, MY WIFE AND I OPENED THE INTERNAL GARAGE DOOR FROM INSIDE THE HOUSE AND IMMEDIATELY SMELLED … Look up ODI 10966358 at NHTSA ↗ ODI 11434360 On August 31st 2021, While driving my 2017 Hyundai Sonata PHEV on interstate 95 the check engine and hybrid system warning lights came on and the car simultaneously lost power for 3-4 seconds, which caused a decrease in speed from 65 to approximately 50 mph. There was a tractor trailer behind me but thankfully it braked to avoid striking my car. The car regained partial power and I was able to drive it home. I took the car to the dealership to have it repaired. The dealer diagnosed a faulty battery management system, and replaced this compon… Look up ODI 11434360 at NHTSA ↗	6 ODI 11044785 · 21,000 mi VEHICLE WAS IN MOTION WHEN THE PHEV WARNING ILLUMINATED AND THE GASOLINE ENGINE SHUT OFF. THE VEHICLE LOST ALL PROPULSION. IT REFUSED TO ENGAGE THE GASOLINE OR ELECTRIC MOTOR TO MOVE OUT OF A DANGEROUS SITUATION. THE VEHICLE WAS TOWED TO THE HYUNDAI DEALER WHERE IT WAS DIAGNOSED AS A FAILED HYBRID BATTERY. Look up ODI 11044785 at NHTSA ↗ ODI 11121258 · 8,550 mi HYBRID SYSTEM WARNING LIGHT CAME ON SEVERAL TIMES. NOW IT IS NOT OPERABLE. CAR WAS CHECKED BY LOCAL HYUNDAI DEALER SERVICE 3 DAYS AGO. THEY DID NOT HAVE PARTS AT THE TIME OF SERVICE, THEY DID NOT PERFORM THE RECALL SERVICE. I WAS ABLE TO DRIVE IT BACK HOME SAFELY, BUT WHEN I TRIED TO START THE CAR AGAIN 3 DAYS LATER IN THE EVENING, IT GAVE WARNINGS. CAR IS NOT OPERABLE. Look up ODI 11121258 at NHTSA ↗ ODI 11514685 While driving the car getting error message on dashboard "Check Hybrid System Turn Off Engine", The Gas engine turn off and switch to continue on electric till able to pull on the side of the road. Turn Off engine, wait a min. Start car again and working fine. This issue appears randomly many times in the last two years while driving. Car was at dealer shop multiple times with no repair, was told we don't see active error message or they can't re-create the error. however scan show P261F error. Open Ticket with Hyundai #21018148 while car at… Look up ODI 11514685 at NHTSA ↗	2 ODI 11490124 · 66,000 mi The contact owns a 2016 Hyundai Sonata Plug-In Hybrid. The contact stated while driving 70 MPH or faster in Hybrid Mode, the vehicle stalled. The HEV error warning light was displayed on the instrument panel. The check engine warning light was also illuminated. The contact turned off the vehicle and disengaged the HEV Mode for the vehicle to restart and function as intended. The failure occurred three times. The vehicle had been taken to the dealer however, the mechanics were unable to determine the cause of the failure. The vehicle was not rep… Look up ODI 11490124 at NHTSA ↗ ODI 11529173 · 65,000 mi The contact owns a 2016 Hyundai Sonata Plug-In Hybrid. The contact stated that on three separate occasions while driving approximately 65 MPH, the “Check Hybrid System - Turn Off Engine” message was displayed. The check engine warning light illuminated. The contact then stated that the vehicle decelerated and went into LIMP Mode. The vehicle was towed to the dealer however, the failure could not be duplicated. The contact stated that the failure recurred. The vehicle was taken back to the dealer but the failure could not be duplicated; however,… Look up ODI 11529173 at NHTSA ↗	1 ODI 11079939 · 12,470 mi 14 MARCH 2018 10:30 AM, 70 MPH ON US 101 TO SAN FRANCISCO, HEV MODE, RAINY WEATHER, 4 PASSENGERS FOR A BUSINESS MEETING. CAR STEERING SHUDDERED AS IF THE TIRES SLIPPED AND SPUN ON THE WET PAVEMENT. ESC, BRAKE, AND AUTO HOLD LIGHTS TURNED YELLOW. WAS ABLE TO DRIVE THE CAR NORMALLY TO REACH DESTINATION, PARKED, ATTENDED MEETING, AND STARTED DRIVING BACK HOME WITH MY PASSENGERS AT 3PM. ESC, BRAKE, AND AUTO HOLD LIGHTS WERE STILL ON. HEV MODE. 30 MINUTES LATER, I-280 AT 65+ MPH, ENGINE POWER DRASTICALLY REDUCED ABRUPTLY, CAR STARTED TO SLOW DOWN A… Look up ODI 11079939 at NHTSA ↗	0
Electrical System	14 ODI 11024125 · 32,284 mi MY SONATA PHEV HAD HYBRID SYSTEM FAILED NOT ONCE, BUT TWICE WITHIN A SPAN OF 1.5 MONTHS. IT'S BEEN HARDLY 1.5 YEARS SINCE I HAD BOUGHT THIS CAR. IN BOTH CASES THE CHECK HYBRID SYSTEM WARNING COMES UP AND ENGINE LOOSES TOTAL POWER. THE 1ST TIME IT HAPPENED, IT WAS IN THE MIDDLE OF A BUSY 405 FREEWAY AND WAS LEFT ALL OF A SUDDEN WITH NO POWER ON THE ENGINE. EXTREMELY DANGEROUS AND LIFE THREATENING PROBLEM TO FACE WITH. WITH WHATEVER POWER WAS LEFT, WAS ABLE TO COAST TO THE RAMP ON THE RIGHT. STOPPING ANYWHERE IN 405 FREEWAY IS ABSOLUTELY DANGEROU… Look up ODI 11024125 at NHTSA ↗ ODI 11044785 · 21,000 mi VEHICLE WAS IN MOTION WHEN THE PHEV WARNING ILLUMINATED AND THE GASOLINE ENGINE SHUT OFF. THE VEHICLE LOST ALL PROPULSION. IT REFUSED TO ENGAGE THE GASOLINE OR ELECTRIC MOTOR TO MOVE OUT OF A DANGEROUS SITUATION. THE VEHICLE WAS TOWED TO THE HYUNDAI DEALER WHERE IT WAS DIAGNOSED AS A FAILED HYBRID BATTERY. Look up ODI 11044785 at NHTSA ↗ ODI 11058626 · 26,200 mi WHILE DRIVING THE CAR AT 68 MPH IN HOV LANE, HYBRID SYSTEM ALERT LIGHT UP AND THE ENGINE COMPLETELY LOST POWER AND SHUT DOWN. VERY DANGEROUS SITUATION AND LUCKY ABLE TO DIRECT THE CAR TO RIGHT SIDE AND STOP AND WAIT FOR TOWING. THIS HAPPEN DURING TRAFFIC WAS SLIGHTLY JAM SO ABLE TO DRIVE TO THE RIGHT SIDE WHEN OTHER CARS ARE SLOWING DOWN IN REGULAR LANE. CANNOT IMAGINE IF THERE IS NO TRAFFIC JAM, HIGH POTENTIAL TO GET INTO ACCIDENT AND LIFE THREATENING SITUATION. WITH THE DEALER FOR FIVE DAYS AND THEY CANNOT PINPOINT THE EXACT PROBLEM AND KEEP… Look up ODI 11058626 at NHTSA ↗	—	1 ODI 11144863 · 30,000 mi "TAKATA RECALL" AUGUST 25TH THE CAR WAS DRIVEN INTO SOME HIGH WATER AND WAS PARKED BY A GAS STATION NEAR GREEN ROAD AND ALDEAN WESTFIELD R. THE CAR WAS UNDERWATER FROM THE FRONT END. I HAVE TAKEN THE VEHICLE IN FOR REPAIR MULTIPLE TIMES FOR REPAIR. FROM WARRANTY ISSUES TO FLOOD REPAIR, BOTH CAN'T GIVE ME A STRAIGHT ANSWER TO WHAT IS WRONG WITH THE CAR. THE CAR STOPS AND COMPLETELY SHUTS OFF HYBRID MALFUNCTION. WE DONT HAVE ANY DOCUMENTS, THE DEALERSHIP HAS COPYS OF ALL REPARS. Look up ODI 11144863 at NHTSA ↗	6 ODI 11099959 · 25,000 mi I WAS GOING ABOUT 70 MPH IN FULL ELECTRIC MODE AND THE CAR REMOVED ALL POWER FROM MY GAS PEDAL, THERE WAS LOTS OF DINGING SOUNDS AND THE DASH SAID "CHECK HYBRID SYSTEM, TURN YOUR CAR OFF". LUCKILY I WAS ALREADY TO THE FAR RIGHT SO I COULD JUST PULL TOT HE SHOULDER AND STOP THE CAR, THE BREAKS AND STEERING WERE STILL WORKING. TOWED TO THE DEALERSHIP, HOPING THE MARCH 2018 RECALL IS THE FIX. I HAD TO CALL AAA, ALL BLUE LINK CAPABILITIES STOPPED WORKING AS WELL. 2016 PLUGIN WITH ABOUT 25,000 MILES. Look up ODI 11099959 at NHTSA ↗ ODI 10966358 · 2,900 mi ON 3/15/2017 AROUND 8AM, I STARTED MY CAR TO LEAVE FOR WORK AND THE CAR SHOWED A WARNING "CHECK HYBRID SYSTEM" AND THE CORRESPONDING WARNING LIGHT CAME ON. THE GASOLINE ENGINE ALSO STARTED RIGHT AWAY AND STAYED ON, EVEN THOUGH THE EV BATTERY WAS FULL. THE ENGINE REMAINED ON THROUGHOUT MY COMMUTE TO WORK AND BACK TO HOME IN THE EVENING. I PLUGGED THE CAR IN MY GARAGE FOR CHARGING OVERNIGHT WITH THE TIMER SET TO START THE CHARGING AT 10PM. AROUND 10:45PM, MY WIFE AND I OPENED THE INTERNAL GARAGE DOOR FROM INSIDE THE HOUSE AND IMMEDIATELY SMELLED … Look up ODI 10966358 at NHTSA ↗ ODI 11516024 Problem began Dec. 2021. Has occurred on 16 occasions since then. Warning light "Check Hybrid System; Turn off Engine" comes on while driving. The car then shuts off the engine and there is a 100% loss of motive power. Sometimes is associated with very rough braking with the car "knocking'." On 3 occasions there has been partial/near complete loss of braking power. All incidents have occurred while under power, so far all while under 45 mph. No accidents yet. Two near collisions from the rear. Hyundai was notified of the problem Dec. 2021/… Look up ODI 11516024 at NHTSA ↗	5 ODI 11044785 · 21,000 mi VEHICLE WAS IN MOTION WHEN THE PHEV WARNING ILLUMINATED AND THE GASOLINE ENGINE SHUT OFF. THE VEHICLE LOST ALL PROPULSION. IT REFUSED TO ENGAGE THE GASOLINE OR ELECTRIC MOTOR TO MOVE OUT OF A DANGEROUS SITUATION. THE VEHICLE WAS TOWED TO THE HYUNDAI DEALER WHERE IT WAS DIAGNOSED AS A FAILED HYBRID BATTERY. Look up ODI 11044785 at NHTSA ↗ ODI 11514685 While driving the car getting error message on dashboard "Check Hybrid System Turn Off Engine", The Gas engine turn off and switch to continue on electric till able to pull on the side of the road. Turn Off engine, wait a min. Start car again and working fine. This issue appears randomly many times in the last two years while driving. Car was at dealer shop multiple times with no repair, was told we don't see active error message or they can't re-create the error. however scan show P261F error. Open Ticket with Hyundai #21018148 while car at… Look up ODI 11514685 at NHTSA ↗ ODI 11579536 While driving the 2017 Hyundai Sonata Plug-In Hybrid, the car will begin to stall, a rapid number of audible beeps will start, the "Check Hybrid System" notification will pop up on the dashboard, and the "Check Engine Light" appears.. The car therefore cannot be driven anymore, and I am forced to pull over to the side. In order to fix the issue temporarily, I need to turn the car off and turn it back on again. Once this is completed, both the "Check Hybrid System" and the "Check Engine Light" disappears and the car can be driven again. An OBD S… Look up ODI 11579536 at NHTSA ↗	0	0	1 ODI 11089955 · 13,000 mi TL* THE CONTACT OWNS A 2017 HYUNDAI SONATA HYBRID. WHILE DRIVING APPROXIMATELY 20 MPH, THE FRONT SIDE COLLISION WARNING SYSTEM FAILED TO FUNCTION. THE VEHICLE WAS TAKEN TO STEVENS CREEK HYUNDAI (4425 STEVENS CREEK BLVD, SANTA CLARA, CA 95051), BUT THE FAILURE WAS UNABLE TO BE DIAGNOSED. THE VEHICLE WAS NOT REPAIRED AND THE FAILURE RECURRED. THE MANUFACTURER WAS NOT CONTACTED. THE APPROXIMATE FAILURE MILEAGE WAS 13,000. Look up ODI 11089955 at NHTSA ↗
Unknown Or Other	3 ODI 11121258 · 8,550 mi HYBRID SYSTEM WARNING LIGHT CAME ON SEVERAL TIMES. NOW IT IS NOT OPERABLE. CAR WAS CHECKED BY LOCAL HYUNDAI DEALER SERVICE 3 DAYS AGO. THEY DID NOT HAVE PARTS AT THE TIME OF SERVICE, THEY DID NOT PERFORM THE RECALL SERVICE. I WAS ABLE TO DRIVE IT BACK HOME SAFELY, BUT WHEN I TRIED TO START THE CAR AGAIN 3 DAYS LATER IN THE EVENING, IT GAVE WARNINGS. CAR IS NOT OPERABLE. Look up ODI 11121258 at NHTSA ↗ ODI 11520782 Occurrence: This has been a recurring issue for over a year (over a year, might be closer to two years now) for our PHEV Sonata. It has happened approximately 10 times. Problem: Total engine shutdown when driving the car. "Shut down engine" type error message pops up and cannot accelerate. Steering still works, but it can be hard to pull over due to lack of engine power. The car can be restarted after shutting down, but must first come to a complete stop and into Park. Safety Issue: The car stops working. Obviously, this would be quite dang… Look up ODI 11520782 at NHTSA ↗ ODI 11734703 I am reporting a serious safety issue involving a 2017 Hyundai Sonata Plug-in Hybrid (VIN: [XXX] ), originally purchased in California. While driving at approximately 70 mph on a highway, the vehicle suddenly lost all propulsion without warning and rapidly decelerated. This created a dangerous situation with surrounding traffic and put me and my family at risk. I had to quickly maneuver to the shoulder to avoid a potential collision. The vehicle was towed to an authorized Hyundai dealership in Utah, where it was diagnosed with a failure of th… Look up ODI 11734703 at NHTSA ↗	1 ODI 11144863 · 30,000 mi "TAKATA RECALL" AUGUST 25TH THE CAR WAS DRIVEN INTO SOME HIGH WATER AND WAS PARKED BY A GAS STATION NEAR GREEN ROAD AND ALDEAN WESTFIELD R. THE CAR WAS UNDERWATER FROM THE FRONT END. I HAVE TAKEN THE VEHICLE IN FOR REPAIR MULTIPLE TIMES FOR REPAIR. FROM WARRANTY ISSUES TO FLOOD REPAIR, BOTH CAN'T GIVE ME A STRAIGHT ANSWER TO WHAT IS WRONG WITH THE CAR. THE CAR STOPS AND COMPLETELY SHUTS OFF HYBRID MALFUNCTION. WE DONT HAVE ANY DOCUMENTS, THE DEALERSHIP HAS COPYS OF ALL REPARS. Look up ODI 11144863 at NHTSA ↗	—	0	2 ODI 11121258 · 8,550 mi HYBRID SYSTEM WARNING LIGHT CAME ON SEVERAL TIMES. NOW IT IS NOT OPERABLE. CAR WAS CHECKED BY LOCAL HYUNDAI DEALER SERVICE 3 DAYS AGO. THEY DID NOT HAVE PARTS AT THE TIME OF SERVICE, THEY DID NOT PERFORM THE RECALL SERVICE. I WAS ABLE TO DRIVE IT BACK HOME SAFELY, BUT WHEN I TRIED TO START THE CAR AGAIN 3 DAYS LATER IN THE EVENING, IT GAVE WARNINGS. CAR IS NOT OPERABLE. Look up ODI 11121258 at NHTSA ↗ ODI 11091575 · 40 mi 2017 HYUNDAI SONATA PLUG IN FEATURE FORWARD COLLISION WARNING ON FRONT STICKER SHOULD HAVE ALSO SAID IT ONLY WORKS ABOVE 25MPH AND IT DOES NOT ACTIVATE WARNING SOON ENOUGH SO I THINK ITS CRASH ZONE AND SHOUDL BE ADJUSTABLE AND TESTABLE IT IS NOT NTSB I HOPE CAN HELP MANUFACTURE A STANDARD TERMINOLOGY WHEN IT COME TO SALES AND RELEASE OF HYUNDAI LIABLE IN CASE FAILURE , YES I KNOW THEY WILL NOT COVER FAILURE UNDER MANY CONDITIONS, BUT THE SYSTEM I BROUGHT TO HYUNDAI 2X ONE IN JULY 2017 AND ONE IN MAR 2018 I WAS TOLD FRONTSIDE COLLISION W… Look up ODI 11091575 at NHTSA ↗	0	0	0
Fuel/Propulsion System	6 ODI 11099959 · 25,000 mi I WAS GOING ABOUT 70 MPH IN FULL ELECTRIC MODE AND THE CAR REMOVED ALL POWER FROM MY GAS PEDAL, THERE WAS LOTS OF DINGING SOUNDS AND THE DASH SAID "CHECK HYBRID SYSTEM, TURN YOUR CAR OFF". LUCKILY I WAS ALREADY TO THE FAR RIGHT SO I COULD JUST PULL TOT HE SHOULDER AND STOP THE CAR, THE BREAKS AND STEERING WERE STILL WORKING. TOWED TO THE DEALERSHIP, HOPING THE MARCH 2018 RECALL IS THE FIX. I HAD TO CALL AAA, ALL BLUE LINK CAPABILITIES STOPPED WORKING AS WELL. 2016 PLUGIN WITH ABOUT 25,000 MILES. Look up ODI 11099959 at NHTSA ↗ ODI 10966358 · 2,900 mi ON 3/15/2017 AROUND 8AM, I STARTED MY CAR TO LEAVE FOR WORK AND THE CAR SHOWED A WARNING "CHECK HYBRID SYSTEM" AND THE CORRESPONDING WARNING LIGHT CAME ON. THE GASOLINE ENGINE ALSO STARTED RIGHT AWAY AND STAYED ON, EVEN THOUGH THE EV BATTERY WAS FULL. THE ENGINE REMAINED ON THROUGHOUT MY COMMUTE TO WORK AND BACK TO HOME IN THE EVENING. I PLUGGED THE CAR IN MY GARAGE FOR CHARGING OVERNIGHT WITH THE TIMER SET TO START THE CHARGING AT 10PM. AROUND 10:45PM, MY WIFE AND I OPENED THE INTERNAL GARAGE DOOR FROM INSIDE THE HOUSE AND IMMEDIATELY SMELLED … Look up ODI 10966358 at NHTSA ↗ ODI 11434360 On August 31st 2021, While driving my 2017 Hyundai Sonata PHEV on interstate 95 the check engine and hybrid system warning lights came on and the car simultaneously lost power for 3-4 seconds, which caused a decrease in speed from 65 to approximately 50 mph. There was a tractor trailer behind me but thankfully it braked to avoid striking my car. The car regained partial power and I was able to drive it home. I took the car to the dealership to have it repaired. The dealer diagnosed a faulty battery management system, and replaced this compon… Look up ODI 11434360 at NHTSA ↗	6 ODI 11099959 · 25,000 mi I WAS GOING ABOUT 70 MPH IN FULL ELECTRIC MODE AND THE CAR REMOVED ALL POWER FROM MY GAS PEDAL, THERE WAS LOTS OF DINGING SOUNDS AND THE DASH SAID "CHECK HYBRID SYSTEM, TURN YOUR CAR OFF". LUCKILY I WAS ALREADY TO THE FAR RIGHT SO I COULD JUST PULL TOT HE SHOULDER AND STOP THE CAR, THE BREAKS AND STEERING WERE STILL WORKING. TOWED TO THE DEALERSHIP, HOPING THE MARCH 2018 RECALL IS THE FIX. I HAD TO CALL AAA, ALL BLUE LINK CAPABILITIES STOPPED WORKING AS WELL. 2016 PLUGIN WITH ABOUT 25,000 MILES. Look up ODI 11099959 at NHTSA ↗ ODI 10966358 · 2,900 mi ON 3/15/2017 AROUND 8AM, I STARTED MY CAR TO LEAVE FOR WORK AND THE CAR SHOWED A WARNING "CHECK HYBRID SYSTEM" AND THE CORRESPONDING WARNING LIGHT CAME ON. THE GASOLINE ENGINE ALSO STARTED RIGHT AWAY AND STAYED ON, EVEN THOUGH THE EV BATTERY WAS FULL. THE ENGINE REMAINED ON THROUGHOUT MY COMMUTE TO WORK AND BACK TO HOME IN THE EVENING. I PLUGGED THE CAR IN MY GARAGE FOR CHARGING OVERNIGHT WITH THE TIMER SET TO START THE CHARGING AT 10PM. AROUND 10:45PM, MY WIFE AND I OPENED THE INTERNAL GARAGE DOOR FROM INSIDE THE HOUSE AND IMMEDIATELY SMELLED … Look up ODI 10966358 at NHTSA ↗ ODI 11516024 Problem began Dec. 2021. Has occurred on 16 occasions since then. Warning light "Check Hybrid System; Turn off Engine" comes on while driving. The car then shuts off the engine and there is a 100% loss of motive power. Sometimes is associated with very rough braking with the car "knocking'." On 3 occasions there has been partial/near complete loss of braking power. All incidents have occurred while under power, so far all while under 45 mph. No accidents yet. Two near collisions from the rear. Hyundai was notified of the problem Dec. 2021/… Look up ODI 11516024 at NHTSA ↗	0	—	1 ODI 11752871 The high voltage battery will no longer charge neither from being plugged in to the charger on the wall nor from the buikt in system onboard the car. There are warning lights saying the inverter coolant is low but the reservoir is at the proper level. I suspect the coolant for the Hybrid charging inverter is bad and crystalizes causing blockages in the inverter coolant system. My car refuses to charge for the last 2 years. After a few seconds (about 7-10) the car shuts off the charging system when plugged in. And now that summer heat us he… Look up ODI 11752871 at NHTSA ↗	0	0	0
Power Train	6 ODI 11044785 · 21,000 mi VEHICLE WAS IN MOTION WHEN THE PHEV WARNING ILLUMINATED AND THE GASOLINE ENGINE SHUT OFF. THE VEHICLE LOST ALL PROPULSION. IT REFUSED TO ENGAGE THE GASOLINE OR ELECTRIC MOTOR TO MOVE OUT OF A DANGEROUS SITUATION. THE VEHICLE WAS TOWED TO THE HYUNDAI DEALER WHERE IT WAS DIAGNOSED AS A FAILED HYBRID BATTERY. Look up ODI 11044785 at NHTSA ↗ ODI 11121258 · 8,550 mi HYBRID SYSTEM WARNING LIGHT CAME ON SEVERAL TIMES. NOW IT IS NOT OPERABLE. CAR WAS CHECKED BY LOCAL HYUNDAI DEALER SERVICE 3 DAYS AGO. THEY DID NOT HAVE PARTS AT THE TIME OF SERVICE, THEY DID NOT PERFORM THE RECALL SERVICE. I WAS ABLE TO DRIVE IT BACK HOME SAFELY, BUT WHEN I TRIED TO START THE CAR AGAIN 3 DAYS LATER IN THE EVENING, IT GAVE WARNINGS. CAR IS NOT OPERABLE. Look up ODI 11121258 at NHTSA ↗ ODI 11514685 While driving the car getting error message on dashboard "Check Hybrid System Turn Off Engine", The Gas engine turn off and switch to continue on electric till able to pull on the side of the road. Turn Off engine, wait a min. Start car again and working fine. This issue appears randomly many times in the last two years while driving. Car was at dealer shop multiple times with no repair, was told we don't see active error message or they can't re-create the error. however scan show P261F error. Open Ticket with Hyundai #21018148 while car at… Look up ODI 11514685 at NHTSA ↗	5 ODI 11044785 · 21,000 mi VEHICLE WAS IN MOTION WHEN THE PHEV WARNING ILLUMINATED AND THE GASOLINE ENGINE SHUT OFF. THE VEHICLE LOST ALL PROPULSION. IT REFUSED TO ENGAGE THE GASOLINE OR ELECTRIC MOTOR TO MOVE OUT OF A DANGEROUS SITUATION. THE VEHICLE WAS TOWED TO THE HYUNDAI DEALER WHERE IT WAS DIAGNOSED AS A FAILED HYBRID BATTERY. Look up ODI 11044785 at NHTSA ↗ ODI 11514685 While driving the car getting error message on dashboard "Check Hybrid System Turn Off Engine", The Gas engine turn off and switch to continue on electric till able to pull on the side of the road. Turn Off engine, wait a min. Start car again and working fine. This issue appears randomly many times in the last two years while driving. Car was at dealer shop multiple times with no repair, was told we don't see active error message or they can't re-create the error. however scan show P261F error. Open Ticket with Hyundai #21018148 while car at… Look up ODI 11514685 at NHTSA ↗ ODI 11579536 While driving the 2017 Hyundai Sonata Plug-In Hybrid, the car will begin to stall, a rapid number of audible beeps will start, the "Check Hybrid System" notification will pop up on the dashboard, and the "Check Engine Light" appears.. The car therefore cannot be driven anymore, and I am forced to pull over to the side. In order to fix the issue temporarily, I need to turn the car off and turn it back on again. Once this is completed, both the "Check Hybrid System" and the "Check Engine Light" disappears and the car can be driven again. An OBD S… Look up ODI 11579536 at NHTSA ↗	2 ODI 11121258 · 8,550 mi HYBRID SYSTEM WARNING LIGHT CAME ON SEVERAL TIMES. NOW IT IS NOT OPERABLE. CAR WAS CHECKED BY LOCAL HYUNDAI DEALER SERVICE 3 DAYS AGO. THEY DID NOT HAVE PARTS AT THE TIME OF SERVICE, THEY DID NOT PERFORM THE RECALL SERVICE. I WAS ABLE TO DRIVE IT BACK HOME SAFELY, BUT WHEN I TRIED TO START THE CAR AGAIN 3 DAYS LATER IN THE EVENING, IT GAVE WARNINGS. CAR IS NOT OPERABLE. Look up ODI 11121258 at NHTSA ↗ ODI 11091575 · 40 mi 2017 HYUNDAI SONATA PLUG IN FEATURE FORWARD COLLISION WARNING ON FRONT STICKER SHOULD HAVE ALSO SAID IT ONLY WORKS ABOVE 25MPH AND IT DOES NOT ACTIVATE WARNING SOON ENOUGH SO I THINK ITS CRASH ZONE AND SHOUDL BE ADJUSTABLE AND TESTABLE IT IS NOT NTSB I HOPE CAN HELP MANUFACTURE A STANDARD TERMINOLOGY WHEN IT COME TO SALES AND RELEASE OF HYUNDAI LIABLE IN CASE FAILURE , YES I KNOW THEY WILL NOT COVER FAILURE UNDER MANY CONDITIONS, BUT THE SYSTEM I BROUGHT TO HYUNDAI 2X ONE IN JULY 2017 AND ONE IN MAR 2018 I WAS TOLD FRONTSIDE COLLISION W… Look up ODI 11091575 at NHTSA ↗	1 ODI 11752871 The high voltage battery will no longer charge neither from being plugged in to the charger on the wall nor from the buikt in system onboard the car. There are warning lights saying the inverter coolant is low but the reservoir is at the proper level. I suspect the coolant for the Hybrid charging inverter is bad and crystalizes causing blockages in the inverter coolant system. My car refuses to charge for the last 2 years. After a few seconds (about 7-10) the car shuts off the charging system when plugged in. And now that summer heat us he… Look up ODI 11752871 at NHTSA ↗	—	0	0	0
Hybrid Propulsion System	2 ODI 11490124 · 66,000 mi The contact owns a 2016 Hyundai Sonata Plug-In Hybrid. The contact stated while driving 70 MPH or faster in Hybrid Mode, the vehicle stalled. The HEV error warning light was displayed on the instrument panel. The check engine warning light was also illuminated. The contact turned off the vehicle and disengaged the HEV Mode for the vehicle to restart and function as intended. The failure occurred three times. The vehicle had been taken to the dealer however, the mechanics were unable to determine the cause of the failure. The vehicle was not rep… Look up ODI 11490124 at NHTSA ↗ ODI 11529173 · 65,000 mi The contact owns a 2016 Hyundai Sonata Plug-In Hybrid. The contact stated that on three separate occasions while driving approximately 65 MPH, the “Check Hybrid System - Turn Off Engine” message was displayed. The check engine warning light illuminated. The contact then stated that the vehicle decelerated and went into LIMP Mode. The vehicle was towed to the dealer however, the failure could not be duplicated. The contact stated that the failure recurred. The vehicle was taken back to the dealer but the failure could not be duplicated; however,… Look up ODI 11529173 at NHTSA ↗	0	0	0	0	—	0	0
Electronic Stability Control (Esc)	1 ODI 11079939 · 12,470 mi 14 MARCH 2018 10:30 AM, 70 MPH ON US 101 TO SAN FRANCISCO, HEV MODE, RAINY WEATHER, 4 PASSENGERS FOR A BUSINESS MEETING. CAR STEERING SHUDDERED AS IF THE TIRES SLIPPED AND SPUN ON THE WET PAVEMENT. ESC, BRAKE, AND AUTO HOLD LIGHTS TURNED YELLOW. WAS ABLE TO DRIVE THE CAR NORMALLY TO REACH DESTINATION, PARKED, ATTENDED MEETING, AND STARTED DRIVING BACK HOME WITH MY PASSENGERS AT 3PM. ESC, BRAKE, AND AUTO HOLD LIGHTS WERE STILL ON. HEV MODE. 30 MINUTES LATER, I-280 AT 65+ MPH, ENGINE POWER DRASTICALLY REDUCED ABRUPTLY, CAR STARTED TO SLOW DOWN A… Look up ODI 11079939 at NHTSA ↗	0	0	0	0	0	—	0
Forward Collision Avoidance	0	1 ODI 11089955 · 13,000 mi TL* THE CONTACT OWNS A 2017 HYUNDAI SONATA HYBRID. WHILE DRIVING APPROXIMATELY 20 MPH, THE FRONT SIDE COLLISION WARNING SYSTEM FAILED TO FUNCTION. THE VEHICLE WAS TAKEN TO STEVENS CREEK HYUNDAI (4425 STEVENS CREEK BLVD, SANTA CLARA, CA 95051), BUT THE FAILURE WAS UNABLE TO BE DIAGNOSED. THE VEHICLE WAS NOT REPAIRED AND THE FAILURE RECURRED. THE MANUFACTURER WAS NOT CONTACTED. THE APPROXIMATE FAILURE MILEAGE WAS 13,000. Look up ODI 11089955 at NHTSA ↗	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

5 patterns with matching reports.

Warning lights and dashboard alerts

26 mentions · 41.3% of complaints

Median mileage: 30,800 mi (10 usable records).

ODI 11080680 · 24,600 mi

WARNING LIGHT SAYING "CHECK HYBRID SYSTEM" COMES ON AND THE ENGINE WOULD NOT START IF THE CAR IS PARKED. WHILE DRIVING THE CAR COMPLETELY SHUTS OFF WITHOUT THE ABILITY TO PULL OVER AT A SAFE LOCATION. IT HAPPENED TO ME THREE TIMES SO FAR, TWICE UNDER 18,000 MILES AND ONCE AT 24,600 MILES. THE DEALER IS NOT SURE WHAT IS CAUSING IT AND GIVES IT BACK TO ME AFTER SOME TWEAKING TO GET RID OF THE WARNING LIGHT. I HAVE FILED A COMPLAIN WITH HYUNDAI (CASE # 11109600) REGARDING THIS. THIS CAR IS A DEATH TRAP AND I WILL NOT EITHER DRIVE OR RIDE IN TH…

Look up ODI 11080680 at NHTSA ↗

ODI 11088803 · 37,000 mi

ENGINE/ELECTRICAL SHUT DOWN OCCURRED ON INTERSTATE AT HIGH SPEED IN TRAFFIC MAY 2017 NARROWLY MISSED BEING HIT FROM BEHIND. MULTIPLE ISSUES WITH CHECK ENGINE LIGHT, RELAY WAS REPLACED. WORKED FOR AWHILE. NOW (APRIL 2018) BACK IN SHOP FOR SAME PROBLEM - ENGINE SHUT DOWN AND WOULD NOT START HAD TO HAVE TOWED TO HYUNDAI DEALER. CHECKED RECALLS, FOUND THEY KNOW THERE IS A PROBLEM BUT NO REMEDY FOR IT. WOULD APPRECIATE A BUY BACK PLEASE. CAN'T SELL IT OR TRADE IT KNOWING IT IS DANGEROUS. CASE #10258851

Look up ODI 11088803 at NHTSA ↗

ODI 11121258 · 8,550 mi

HYBRID SYSTEM WARNING LIGHT CAME ON SEVERAL TIMES. NOW IT IS NOT OPERABLE. CAR WAS CHECKED BY LOCAL HYUNDAI DEALER SERVICE 3 DAYS AGO. THEY DID NOT HAVE PARTS AT THE TIME OF SERVICE, THEY DID NOT PERFORM THE RECALL SERVICE. I WAS ABLE TO DRIVE IT BACK HOME SAFELY, BUT WHEN I TRIED TO START THE CAR AGAIN 3 DAYS LATER IN THE EVENING, IT GAVE WARNINGS. CAR IS NOT OPERABLE.

Look up ODI 11121258 at NHTSA ↗

Matching rule

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

Stalling or loss of power

18 mentions · 28.6% of complaints

Median mileage: 25,561 mi (12 usable records).

ODI 11044785 · 21,000 mi

VEHICLE WAS IN MOTION WHEN THE PHEV WARNING ILLUMINATED AND THE GASOLINE ENGINE SHUT OFF. THE VEHICLE LOST ALL PROPULSION. IT REFUSED TO ENGAGE THE GASOLINE OR ELECTRIC MOTOR TO MOVE OUT OF A DANGEROUS SITUATION. THE VEHICLE WAS TOWED TO THE HYUNDAI DEALER WHERE IT WAS DIAGNOSED AS A FAILED HYBRID BATTERY.

Look up ODI 11044785 at NHTSA ↗

ODI 11055967 · 11,700 mi

CAR IN MOTION ON HIGHWAY IN THE MOUNTAINS LOST POWER AND HAD TO BE TOWED TO A DEALER WHO INDICATED THEY HAD SEEN SIMILAR PROBLEMS. ENGINE REPAIRS NEEDED AND WILL TAKE AT LEAST 2 WEEKS WHEN THEY IDENTIFY PROBLEM. CAR HAS 11,700 MILES ON IT. I WAS ABLE TO SAFELY PULL OFF ROAD SO NO INJURIES OR ACCIDENT.

Look up ODI 11055967 at NHTSA ↗

ODI 11058626 · 26,200 mi

WHILE DRIVING THE CAR AT 68 MPH IN HOV LANE, HYBRID SYSTEM ALERT LIGHT UP AND THE ENGINE COMPLETELY LOST POWER AND SHUT DOWN. VERY DANGEROUS SITUATION AND LUCKY ABLE TO DIRECT THE CAR TO RIGHT SIDE AND STOP AND WAIT FOR TOWING. THIS HAPPEN DURING TRAFFIC WAS SLIGHTLY JAM SO ABLE TO DRIVE TO THE RIGHT SIDE WHEN OTHER CARS ARE SLOWING DOWN IN REGULAR LANE. CANNOT IMAGINE IF THERE IS NO TRAFFIC JAM, HIGH POTENTIAL TO GET INTO ACCIDENT AND LIFE THREATENING SITUATION. WITH THE DEALER FOR FIVE DAYS AND THEY CANNOT PINPOINT THE EXACT PROBLEM AND KEEP…

Look up ODI 11058626 at NHTSA ↗

Matching rule

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

Battery drain and no-start mentions

3 mentions · 4.8% of complaints

Median mileage: 37,000 mi (3 usable records).

ODI 11080680 · 24,600 mi

Look up ODI 11080680 at NHTSA ↗

ODI 11084582 · 38,175 mi

MY CAR COMPLETELY LOST POWER WHILE I WAS DRIVING ON THE FREEWAY. THE DASH READ "HYBRID SYSTEM FAILURE". IT SHUT OFF WHILE I WAS DRIVING IN THE CARPOOL LANE. THERE WAS NO WARNING, JUST SHUT RIGHT OFF. I WAS ABLE TO COAST OVER TO THE SHOULDER TO SAFETY UNTIL AAA CAME TO TOW ME AWAY. THE CAR WOULD NOT START BACK UP. IT TURNED ON BUT COULDN'T START THE CAR.

Look up ODI 11084582 at NHTSA ↗

ODI 11088803 · 37,000 mi

Look up ODI 11088803 at NHTSA ↗

Matching rule

Hard or delayed shifting

1 mentions · 1.6% of complaints

Median mileage: Unavailable (0 usable records).

ODI 11492604

I was traveling on a highway when a "hybrid system warning" suddenly appeared on the dashboard. Every dashboard warning light illuminated. The car began to lose power. I exited the highway immediately and the car began to have sporadic power and was "lurching." I immediately pulled onto the shoulder and at that time another warning on the dash appeared within a minute or two of the first warning that said "shut engine off." The computer screen began to flash on and of and the windows would not roll up smoothly. When the tow truck arrived t…

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Matching rule

Steering assistance concerns

1 mentions · 1.6% of complaints

Median mileage: Unavailable (0 usable records).

ODI 11568255

I was driving the vehicle with 2 other occupants onboard on [XXX] towards US-101. The EPS warning light already came on after entering [XXX] from [XXX], but initially, I didn't think it was much of an issue. As I merged to the right lane in preparation of entering the highway, the steering began to feel very stiff, so I immediately made a right turn into a local street when there was a little bit of steering left. As soon as I pulled over, the steering locked up completely, and both the EPS warning light and the dash display's lane-departure s…

Look up ODI 11568255 at NHTSA ↗

Matching rule

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