2022 Hyundai Elantra Hybrid

On [XXX] and [XXX], while driving at approximately 50 MPH, my vehicle experienced a sudden and complete loss of power, presenting an immediate safety hazard. The incident unfolded as follows: Without warning, the car emitted an alarming sound from the cabin. Simultaneously, a message appeared on the dashboard stating "Check Hybrid System" and instructing me to "Pull Over Safely." This was the first and only warning; there were no prior indications or symptoms of any problem before this sudden failure. Immediately upon this warning, the vehicle experienced a total loss of power. The component that failed appears to be the hybrid system itself, leading to a complete electrical system shutdown. The vehicle is currently available for inspection upon request. After safely pulling over and turning off the car, all electrical functions ceased. This included essential safety features such as hazard lights, rendering the vehicle completely inoperable and "electrically dead." My safety and the safety of other motorists were severely put at risk due to the sudden and complete loss of propulsion and all electrical systems (including safety lights) while the vehicle was in motion. This left the vehicle vulnerable and invisible to other traffic, particularly concerning if this occurred on a highway or at night, as it creates a high risk for rear-end collisions or other accidents. I have personal video documentation of this incident, which clearly shows the dashboard warnings and the vehicle's subsequent electrical failure. I am prepared to share this video upon request. Following this alarming event, I took my vehicle to the Wolfchase Dealership in Memphis on May 16 2025. The problem has not been reproduced or confirmed by the dealership. Despite their inspection, the dealership claimed they could not find any issue, stating that "no system of record is recording such code in the vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Sometimes when the cruise control is turned on the car starts the cruise setting at 110mph and then starts accelerating the vehicle to that speed. It does not allow the mph setting to be turned down using the controls on the steering wheel, the only way to take it out of the stuck 110 mph setting is by turning cruise control off or braking. This situation happens rarely but does occur with only the cruise control being turned on, without any further prompt. I have a video of the occurance but the website does not allow me to upload a video.

We were on our way home from the beach on [XXX]. Coming through Birmingham on [XXX] in the far left (fast) lane traveling 78-80 mph with traffic flow, the car starts sounding a loud alarm with red flashing lights on the dashboard. The notification flashing said to “Check Hybrid system HEV BATTERY, Stop safely”. The car began to power down with no acceleration. I was unable to get across to the far-right lane to pull over, we had to just squeeze in between the concrete barrier and the cars flying by. Not to mention no flashers – nothing. The car is DEAD. We started to google hoping someone else had this issue and posted what we could do. There was a video for this exact issue stating to push a button on the left side of the dash that would reset the battery. We did that and it began to power back on. We rode in the far-right lane for the rest of the ride home, worried it would happen again. It did. On [XXX]., I was able to move over while it was powering down and get out of traffic. We received a notice from Hyundai around this time stating there were 3 recalls that needed to be fixed and one involved the HEV battery. We assumed it would fix this issue. We got another notice about 3 additional recalls (one also involved the HEV battery) and we called to get it scheduled but they were already booked out until Sept. So, we scheduled that appointment for the 2nd week in Sept. Fast forward a few weeks after making that appointment and after the recalls were done, it did it again 2 days in a row on my way home from work. One of these times it powered down and the only place to pull off was in a turning lane. The turning lane happened to be for oncoming traffic, but I thought I could hit the reset fast enough to be safe. It took a little longer than expected and I have many videos of this and cars were having to go around me to make their turn. I have one other I can go into more detail another way. We dropped the car at a dealership on 8/12 and have h INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT

Issue: manually setting cruise control to current speed (say 55mph) sets the cruise to 110mph . This has happened more than 10 times in 2 years of my ownership. This happens randomly and not possible to reproduced on-command. The dealers have refused to note this info and send it to Hyundai for investigation. Car accelerating to 110mph all of a sudden while you expect it to stay at your current speed can make one loose control of the vehicle, drive off the road if this happens near a sharp bend and potentially hitting other cars. This issue has definitely put the safety of me and other were put at risk. I believe this is a software issue and the dealers cant diagnose this on the spot. Hyundai does not seem to collect such non-reproducible complaints on their end which is really irresponsible.

Horn has failed twice. The first time it was taken to the dealership and “fixed” - now it has failed again. The second issue is that the car accelerates on its own, both at a high and low rate of speed. While traveling at approximately 60 mph on multiple occasions, when the engine transitions from the electric motor to the gas engine, it will suddenly rapidly accelerate without any additional pressure on the gas pedal. While braking at a low rate of speed, the car seems to fight the brakes and will accelerate instead, propelling the car forward. This has almost caused multiple accidents. At the first occasion (Mar 2023), the dealer did a “transmission relearn” which mostly fixed the issue, but it has aggressively returned only 3 months later (one week ago) and is extremely dangerous. While trying to move to the side of the road and stop the car, the car continues the stop-go jerking/propelling forward and is nearly uncontrollable. The vehicle is currently at the dealership again and has not been diagnosed. On the first occasion they claimed they could not reproduce the issue. There is an open case with Hyundai regarding this. There were no warning lights or signals on the vehicle.

The Cruise Control will automatically set itself to either 20mph or 120mph when engaging it as usual. This happens with no common circumstances that I can see, but as it has happened over 10 times and I have only had the brand new car since Aug 31 2022 and the dealership does not seem concerned about it, I though I should report it to you. It HAS put both myself and others at risk, as the first time it happened, the car began to accelerate as fast as possible and the digital readout on the dashboard had the Cruise Control set for 120 mph and I almost ran into the car ahead of me. I have taken it to Schomp Hyundai in Aurora, CO and they were unable to reproduce the issue and no codes came up, with the exception of the LKA, which they did not deem a problem. This happens regularly and the only recourse is to pull over and restart the car. This first occurred around 20,000 miles and continues to happen without any rhyme or reason and makes me feel unsafe in my first brand new car. Thank you for taking the time to read this and I hope if this is happening to others, that Hyundai will be made aware of it and remedy the problem before someone get seriously hurt.

After driving the vehicle for about 5 miles I stopped to make a left turn and when I let off the brake and pressed the gas pedal the car crept forward but wouldn't speed up and the gas engine wasn't starting or even cranking. After about 20 to 30 seconds to gas engine started and the car drove fine for about 15 miles then I went to slow down and the car speed up on it own and the adaptive cruise control was off. Then it drove fine for a few more miles then I stopped at a red light and then began to make a right turn and the car did the same as before. It crept forward and the gas engine wasn't starting or even cranking. Then after 20 to 30 seconds the gas engine started and I was able to speed up some but then the engine would rev up but the car wouldn't speed up. It seemed like the transmission wasn't engaging. The car was parked for about 8 hours and then drove to the dealership without any issues. The service department at the local Hyundai dealership looked at the vehicle and test drove it without any issues

The contact owns a 2022 Hyundai Elantra. The contact stated while driving approximately 25 MPH, he depressed the brake pedal to the floor and the vehicle inadvertently attempted to accelerate forward. The contact also attempted to accelerate; however, the vehicle inadvertently stopped. The contact then restarted the vehicle and the vehicle operated as intended. There were no warning lights illuminated. The contact also stated that the failure had occurred after purchasing the vehicle at the dealer. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 7,600.