2020 Hyundai Elantra electrical system problems

“2020 HYUNDAI [XXX], VIN: [XXX] Incident Description: On XXX I was pulling into a parking spot and had my foot firmly on the brake pedal. When I attempted to shift the vehicle into Park the engine suddenly revved up excessively. The vehicle then accelerated forward on its own and crashed into a building.”

“I have a 2020 Hyundai Elantra Limited that was purchased new in December of 2020, has 17,764 miles, and no damage. At the end of May/early June of 2026, the car gave warning messages for the following: check forward collision avoidance assist system, check lane keep assist system, and check high beam assist system. The car was inspected by the dealership, from which it was purchased, on June 29, 2026. The technician report says error codes C1604 and C1606 were found and that the car required replacement of the front camera system at the cost of $1991.49. Front camera failure negates the ability to use the advanced safety features of this car. These features are so important to alert and, more importantly, assist the driver avoid accidents and improve all motorists safety. I have read numerous complaints depicting the same problem with this front camera system. Hyundai issued TSB 20-BE-006H due to multiple problems just like the one that happened to me. I have corresponded with Hyundai about this situation and my concerns on why a car with this few miles and no damage had a failure of this magnitude. They are unwilling to assist due to the warranty expiring 6…”

“The contact owns a 2020 Hyundai Elantra. The contact stated that the vehicle unexpectedly turned off while driving 25 MPH on a local road. The engine symbol was displayed. Additionally, the battery was drained. The vehicle was taken to an independent mechanic, and the battery was replaced three times. Additionally, the computer was replaced, and the contact was informed that the powertrain system had failed. The local dealer was contacted and confirmed that there was no extended warranty on the vehicle. The vehicle was not diagnosed or repaired. The contact called the financial institution and the dealer who sold the vehicle about the warranty. The manufacturer was not notified of the failure. The failure mileage was approximately 70,000.”

“Within a matter of a few days my car has been stopping by itself. The car was smoking and stopping in the middle of the highway, my dealership is proving me with a new engine but is trying to have me come out of pocket for an fuel injector, please help !”

“The headlights failed their soldered incorrectly. It looks like a child did it. The back camera has yet to work since shows black screen, and then the lane Assistant shuts off in the middle of the road and there’s nothing blocking it. lights went out and kept going out no matter how many times I replaced the bulb when I was on the highway. I took it into Firestone and they stated that the company fucked up the wiring system.”

“The headlights still cannot be used on high beam as the lights strobe when used. This was complaint was previously submitted with the same Vin#. This is dangerous for driver and others, including oncoming traffic. The local Hyundai dealer said it is would be $200+ for them to diagnostic and if they fixed it, the diagnostic fee would be credited toward the repair. How can this not be coved under a recall when it is clearly a safety issue and many mentions on line with others having the same problem? The vin.# says there are no open recalls. How can I get this covered on my car that is the same model and year as others with the same problem. I see a couple service bulletin's and would like to know if any apply. Please respond with any help or suggestions on this matter as I need help from the NHTSA to get Hyundai to fix it. I am happy to send a video for proof. I look forward to your reply. Thank you very much!”