2012 HYUNDAI SONATA HYBRID Complaints

While driving and everything is going along fine it will suddenly jerk and make a sound as if I've been hit behind. I'm not sure if it's part of the detached shift cables or transmission or something else. Sometimes it will jerk violently while going uphill also.

2012 Hyundai Sonata Hybrid well maintained by original owner, under 130,000 miles. May of 2025 AC stopped working intermittently (Hyundai dealer replaced AC hose). Aug 2025 AC stopped working AGAIN (same dealer could NOT identify problem). Car has consistent Hybrid System Warning! Safely Stop and Do not Drive messages lights and sirens when braking. Code PA186 comes up (low state of charge code for hybrid battery). December 2025 brought car back to SAME Hyundai dealer who NOW says car suddenly needs a 10k transmission (BUT still no idea what PA186 code is related to). Got transmission drained at different shop and NO NEW TRANSMISSION NEEDED! Every repair shop OUTSIDE OF HYUNDAI who has scanned for codes gets the PA186 error and say it is related to HYBRID BATTERY LOW STATE OF CHARGE (I am the original owner THUS lifetime hybrid battery warranty). June 2026 different Hyundai dealer for repair of AC and PA186 code. NEW Hyundai dealer says AC issue is NOT related to the PA186 code. They still dont know what PA186 code is but want to charge me $5100 for engine wiring harness electrical short. SIDE NOTE!! Engine wiring harness electrical short is known issue for ABS module recall 251 for this car. Hyundai has denied the engine wiring harness electrical short repair as part of ABS recall 251 warranty and STILL cant tell me why Hybrid System Warning Lights and PA186 code is come on. Is electrical issue really harness or HYBRID battery?? Car is currently at Hyundai dealer.

The contact owned a 2012 Hyundai Sonata. The contact stated that while driving at 75 MPH on the highway, while depressing the accelerator pedal, the vehicle failed to accelerate. No warning lights illuminated. The contact veered over to the right side of the road, turned the vehicle off, and she noticed smoke coming from the engine. A bystander behind her noticed the flames coming up from the engine. The contact mentioned she exited the vehicle and called 911. No injuries were sustained. No medical attention was required. A police report was filed. The fire department extinguished the fire. The vehicle was destroyed. The vehicle was towed to Atow lot. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 160,000.

The contact owns a 2012 Hyundai Sonata Hybrid. The contact stated while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. Additionally, the ABS warning light was illuminated. The contact stated that the vehicle had to be turned off and restarted every ten minutes. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The contact stated that the vehicle was recently serviced by the dealer and NHTSA Campaign Number: 23V651000 (Service Brakes, Hydraulic) was completed. The contact stated that the failure was present prior to the recall repair being performed. In addition, the contact stated that the failure reoccurred a week after the recall repair was completed. The manufacturer was not made aware of the failure. The failure mileage was approximately 130,000.

The contact owns a 2012 Hyundai Sonata Hybrid. The contact stated while attempting to close the passenger’s side rear door, the door failed to lock as needed. The contact tied the door closed. The contact stated that the driver's side rear door was locked, and the contact was unable to open the door. The contact had taken the vehicle to a dealer when the passenger’s side door was not locking. The dealer diagnosed the vehicle and determined that the latch and locking mechanism needed to be replaced. The vehicle was not repaired. The contact stated that when the driver's side rear door failed to lock securely, the vehicle was not returned to the dealer. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 41,000.

The contact owns a 2012 Hyundai Sonata Hybrid. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power and the low battery warning light illuminated. In addition, the contact heard a rattling sound coming from the engine before the engine seized. The vehicle was towed to the dealer where it was diagnosed with a failed hybrid system and that the hybrid system needed to be replaced. The contact was also informed that the transmission was not the original transmission, and the cooler was damaged. The manufacturer was not made aware of the failure. The failure mileage was approximately 145,000.

The contact owns a 2012 Hyundai Sonata Hybrid. The contact stated that while driving at an undisclosed speed, the brake warning light illuminated. The contact pulled over on the side of the road and the vehicle was towed to the dealer to be diagnosed. The contact was informed that the ABS and hydraulic pump needed to be replaced. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 23V651000 (Service Brakes, Hydraulic) that was previously performed. The manufacturer was made aware of the failure and informed the contact the failure was not related to the recall repair. The failure mileage was approximately 151,020.

The contact owns a 2012 Hyundai Sonata Hybrid. The contact received notification of NHTSA Campaign Number: 23V651000 (Service Brakes, Hydraulic) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

The contact owns a 2012 Hyundai Sonata Hybrid. The contact stated that while driving at an undisclosed speed and depressing the brake pedal, the vehicle lunged forward. The vehicle was taken to an independent mechanic and diagnosed with automatic transmission failure. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 76,000.

The contact owns a 2012 Hyundai Sonata Hybrid. The contact stated while driving at an undisclosed speed, the brakes became inoperable. There were no warning lights illuminated. The contact received notification of NHTSA Campaign Number: 23V651000 (Service Brakes, Hydraulic) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The approximate failure mileage was 155,290. Parts distribution disconnect.