2022 Hyundai Sonata Hybrid Problems

Driving at 78 mph and "Check hybrid system" came on, engine and all throttle/electrical shut off and did not regain power. Had to sit for 5-10mins and vehicle eventually regained power after resetting battery and had no issues.

The contact owns a 2022 Hyundai Sonata Hybrid. The contact stated that while attempting to use the key fob to unlock the vehicle, the vehicle failed to respond. The contact manually unlocked the vehicle with the key, and the vehicle failed to start. The contact stated that the failure had occurred on two occasions, and the vehicle was jump-started. The vehicle was taken to the dealer, where the contact was informed that the failure could not be duplicated. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 33,808. The VIN was not available.

Fuel injector failed. The vehicle stall and accelerate poorly due to misfires. It is leaching gasoline into the oil which can result in total engine failure. Dealership verified the injector was bad. There was a warning light at one time after refueling, presumed it was my fuel cap, tightened it, and the light went away.

Car is a Sonata Hybrid Limited equipped with a solar roof which charges the hybrid battery. Vehicle began to cut off battery power while parked, requiring the use of a factory equipped 12V override switch in March 2025 after approximately 3.5 years of ownership. This occurred multiple times, often when the car was parked in the sun but independent of how long it had been driven prior or how long it had sat without being started. Evaluated by two Hyundai dealers; second dealer found a fault in the "solar DCDC converter" as well as the hybrid battery bulging. Battery module replaced. Unclear if this resolves the issue or it will recur again. Am speaking to Hyundai regarding battery warranty extension as vehicle had 88000 miles on it at the time of the issue starting. Online fora (e.g., Reddit, Facebook) note other customers who have had similar problems with similar fixes. - [XXX] - [XXX] - [XXX] - one individual in this thread had complete power loss while driving down the highway This issue potentially risks stranding customers, and if the hybrid battery continues to bulge increases the risk of fire which could lead to property damage, personal injury, or death. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Driving at 78 mph and "Check hybrid system" came on, engine and all throttle/electrical shut off and did not regain power. Had to sit for 5-10mins and vehicle eventually regained power after resetting battery and had no issues.

The contact owns a 2022 Hyundai Sonata. The contact stated while driving 30 MPH, there was a delay while shifting into another gear. The contact stated that the chassis warning light was illuminated. The contact also stated that the front driver’s side door failed to latch and close properly. The contact took the vehicle to the local dealer but was unable to duplicate the failure. The contact stated on October 14, 2023, the solar panel ceased charging. The contact started to hear an abnormal sound coming from the front windshield. The contact stated she became aware that the front windshield had detached from the vehicle. The contact took the vehicle back to the local dealer but was unable to duplicate the failure. The vehicle was not repaired. The contact took the vehicle to the local dealer: Woodhouse Hyundai of Omaha [XXX] : [XXX] ), where it was diagnosed with needing the solar panel and the front driver’s side window to be replaced. The vehicle was repaired; however, the contact continued to hear the abnormal sound. The contact took the vehicle to the local dealer: Beardmore Hyundai [XXX] : [XXX] ) where it was diagnosed with a delay in the transmission. The vehicle was not repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 16. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Driving at 78 mph and "Check hybrid system" came on, engine and all throttle/electrical shut off and did not regain power. Had to sit for 5-10mins and vehicle eventually regained power after resetting battery and had no issues.

My engine coolant level keeps going down but no leaks evident also heavy white smoke coming out from the exhaust. Finally engine overheated.

When outside temperature drops, car starts in morning with several warning lights illuminated, indicating fault with several safety systems including airbags, brake, power steering, front camera, blind-spot collision warning system, traction control and smart cruise control. Car key fobs have consistently failed, disabling access to the vehicle. The vehicles 12V reset recently failed which required Hyundai Roadside Assistance (10/25/24). According to BlueLink application, cars 12V battery has been reset dozens of times, which is information visible to the service centers. However, at several past service appointments it has been verbally stated that "problem can not be replicated" and was not documented. Problem was confirmed by Hyundai service center on March 13, 2024. Problem was not resolved at the time of service, vehicle was returned back without resolution. With temperatures now dropping at night, said issues are occurring daily with warning indicators for failing safety systems illuminating upon cold start and electrical system failing daily.

The contact owns a 2022 Hyundai Sonata. The contact stated while driving 30 MPH, there was a delay while shifting into another gear. The contact stated that the chassis warning light was illuminated. The contact also stated that the front driver’s side door failed to latch and close properly. The contact took the vehicle to the local dealer but was unable to duplicate the failure. The contact stated on October 14, 2023, the solar panel ceased charging. The contact started to hear an abnormal sound coming from the front windshield. The contact stated she became aware that the front windshield had detached from the vehicle. The contact took the vehicle back to the local dealer but was unable to duplicate the failure. The vehicle was not repaired. The contact took the vehicle to the local dealer: Woodhouse Hyundai of Omaha [XXX] : [XXX] ), where it was diagnosed with needing the solar panel and the front driver’s side window to be replaced. The vehicle was repaired; however, the contact continued to hear the abnormal sound. The contact took the vehicle to the local dealer: Beardmore Hyundai [XXX] : [XXX] ) where it was diagnosed with a delay in the transmission. The vehicle was not repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 16. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

When outside temperature drops, car starts in morning with several warning lights illuminated, indicating fault with several safety systems including airbags, brake, power steering, front camera, blind-spot collision warning system, traction control and smart cruise control. Car key fobs have consistently failed, disabling access to the vehicle. The vehicles 12V reset recently failed which required Hyundai Roadside Assistance (10/25/24). According to BlueLink application, cars 12V battery has been reset dozens of times, which is information visible to the service centers. However, at several past service appointments it has been verbally stated that "problem can not be replicated" and was not documented. Problem was confirmed by Hyundai service center on March 13, 2024. Problem was not resolved at the time of service, vehicle was returned back without resolution. With temperatures now dropping at night, said issues are occurring daily with warning indicators for failing safety systems illuminating upon cold start and electrical system failing daily.

As I was driving my dashboard lit up with warning lights and audible alarms indicating that I should inspect my regen brake. Safety features such as lane departure, lane assist, blind spot indicator stopped functioning and my speedometer did not work. I stopped the car and looked behind the front wheels and nothing looked “unusual”. I restarted the car and all of the alarms went off again, leaving me without a speedometer or the safety features mentioned above. I scheduled an appointment with my dealership explaining what had happened. They did a diagnostic test and determined that it was a faulty E Brake Module that needed to be replaced but is on back order with no parts available in the US to order. Furthermore they do not know when a replacement is available. They reset the sensors so that my safety features were restored. This is the second time within a 14 months of purchasing the brand new vehicle that electrical systems have needed to be replaced. The first time was a faulty wiring harness located in the trunk area that the dealership had said “must have been damaged during installation at the factory”. Again-when I driving at highway speeds suddenly the alarms and warning lights were triggered-leaving me without the same safety features, speedometer and power steering/brakes. The dealership was able to replace the wiring harness and the problem seemed to be resolved until this latest incident.

When outside temperature drops, car starts in morning with several warning lights illuminated, indicating fault with several safety systems including airbags, brake, power steering, front camera, blind-spot collision warning system, traction control and smart cruise control. Car key fobs have consistently failed, disabling access to the vehicle. The vehicles 12V reset recently failed which required Hyundai Roadside Assistance (10/25/24). According to BlueLink application, cars 12V battery has been reset dozens of times, which is information visible to the service centers. However, at several past service appointments it has been verbally stated that "problem can not be replicated" and was not documented. Problem was confirmed by Hyundai service center on March 13, 2024. Problem was not resolved at the time of service, vehicle was returned back without resolution. With temperatures now dropping at night, said issues are occurring daily with warning indicators for failing safety systems illuminating upon cold start and electrical system failing daily.