2022 HYUNDAI SONATA HYBRID Electrical System Problems

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.

Mileage: 33,808

Vehicle will not start. This is the fourth incident where vehicle will not start. It has had the software update, battery and voltage regulator replaced in the summer of 2025. In Aug of 2025, vehicle will not start with jump or use of 12v battery in vehicle.

Purchased vehicle on March 5, 2025 from a dealer. At the time it had approximately 20,000 miles. Within days of purchase, the car would not start even after pushing the battery reset button. Eventually, it would restart, but the time it took was considerable. Took the car to the Hyundai dealer near me and discovered that it had been with them for two months prior to purchase for the same problem. They have replaced the 12 V battery and possibly the hybrid battery, but now after owning it for about six weeks, it is giving me a message that there is a problem with the hybrid system and I should stop driving immediately. It is now back at the dealer. They can’t seem to duplicate the problem and I don’t feel safe driving the car because I don’t know if and when I’m going to get to my destination.

The car has completely lost power. Can not enter. Have to use the mechanical/physical key on the fob. Its been happeneing 7-8 times in the last year. It has a battery reset button we reset it from the dash which has a dedicated button just for this?

I bought my 2022 Hybrid Sonata in the summer of 2022. I drove it down to the beach (8 hour drive) about a week after purchasing the vehicle so at that time there were less than 100 miles on the car. We didn't use the vehicle for the week we were at the beach and when we tried to unlock the car to load our bags, the key would not unlock the car and we couldn't get in. We had to manually unlock the doors and call roadside assistance because the Battery reset button would not jumpstart the car. I was assured that there was no issue with the car by my local Hyundai dealership and that this was "normal." I have had the car die on me countless times while it sits idle in my driveway if I don't start it at least every other day. On August 8th 2024, my car was dead and I was able to jump it with the Battery Reset button. The next day, it was dead again. Upon jumping it for the second time in 24 hours, the check engine light came on. I took the car to the dealership to run diagnostics and the hybrid battery has failed their tests. Now I am waiting on my car with a loaner vehicle that I cannot drive out of state. I was told by customer service that they have had this problem with several other customers and some had to wait TWO YEARS for their battery to arrive and car repaired.

I brought my car in for electronic update recall. No issues before service. After service, dealer tells me that my car in inoperable and the 12v Aux battery needs to be replaced. The battery was swollen. There were no indication before bringing the car in for recall that there was a battery issue. Possible fire hazard.

When I have my car parked without starting for 3 or more days, I get a alert that my 12vdc battery is low. When I get back to my car, I have to use the physical key to unlock and push the 12 dcv button to jump start the system. The cover over the door latch has to be taking off with the key to access it and is very hard to remove. This is a safety issue, especially for someone who may have a disability. It tool me 15 minutes to remove the cover because I had to pry it off with breaking it. I got to the point of just pulling it off before I leave home and putting the cover in glovebox because I park at the airport for work trips. These has happened 3 times. If these is the case, hyundai needs to make the Manuel key access accessible.

1. Solar panel roof exploded without any impact. 2. Vehicle completely shuts down when the solar panel over charges the battery.

Since a few weeks after buying the car new, the battery dies and self resets every few weeks on average. No error codes occur, but the car had clearly lost power while parked, indicating an issue with power management. For the last could months, car now has 26-27K miles and is 21-23 months old, it had mostly stopped resetting. It now is dead when I go out to it, even after only a couple hours of it being parked at night or during the day. I have to manually access the car and use the battery reset button. They observe no error codes. I have read other people have the failure while driving and fear and electrical issue could be a fire hazard. At the very least, it is a personal safety issue in making me take time to access my car, which could increase my risk of being attacked while trying to get into my car safely. It has occurred 5 or 6 times since August 21, most recently on October 8th and 9th.

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.