2012 Hyundai Genesis: sudden unintended acceleration

Filed Jul 6, 2019 · Transmission · 55,000 miles · PA

While accelerating, the transmission would slip. This would cause the car to lose power while the gear slipped, then the gear would catch and the car would surge forward. The dealer could not find an issue and gave the car back to me. The problem returned, so I had the car towed back to the dealer. The dealer replaced the automatic transmission and the issue resolved. The replaced transmission began to exhibit the same behavior approximately 35,000 miles later.

Filed Sep 28, 2017 · Acceleration, Brakes · 65,000 miles · FL

Tl* the contact owns a 2012 hyundai genesis. While at a stop light, the vehicle suddenly experienced unintended acceleration. During the incident, the brakes malfunctioned and would not immediately stop the vehicle when the brake pedal was depressed. Moments later, the engine backfired and the check engine indicator illuminated. The vehicle was taken to the local dealer (hyundai of coconut creek in coconut creek, fl) where it was diagnosed that the engine valve was faulty and needed to be replaced. The vehicle was repaired, but the failure recurred. The vehicle was taken back to the dealer where it was diagnosed that the transmission was faulty and need to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 65,000.

Filed Aug 12, 2014 · Transmission · 5,000 miles · OR

I had this verified scenario by the local hyundai technician while he had the computer hooked to my car and I consistently duplicated the problem. While quickly decelerating from 25-20 MPH to under 5mph the transmission delays the shift from 3rd or 4th gear directly to 1st gear by 2-4 seconds without any power. When immediate power is needed the delay causes me to give it more gas in hopes of more immediate response. Eventually the car gives sudden acceleration often times triggering the traction control to engage. This has caused a few near miss accidents for me. I bring it up to the dealership everytime I have the car serviced but it doesn't appear hyundai has a fix. I have also sent in this issue directly to hyundai USA. The issue is the shift pattern from 3rd or 4th directly to 1st gear. If the car would downshift evenly 4,3,2 then the proper gear would be engaged when power is needed.

Filed Sep 13, 2013 · Acceleration, Transmission · 35,728 miles · MD

The vehicle accelerated without the gas pedal having a force applied thereto and with the brake pedal being depressed. Once the automatic transmission was placed in park, the engine operated at over 3,000 RPM without the gas pedal being depressed. Once the engine is turned off and restarted the vehicle operates normally for a short period of time.

Filed Jan 8, 2013 · Acceleration · 905 miles · TX · crash

Tl* the contact owns a 2012 hyundai genesis. The contact stated that while driving at low speeds in reverse, the vehicle accelerated without warning. The contact crashed into a post but did not sustain any injuries. The police were not contacted. The vehicle was towed to an independent mechanic where the manufacturer was contacted and sent an investigator to inspect the vehicle. The investigation concluded that they were unable to diagnose the failure and would send the contact a formal letter with the details of the investigation. The vehicle was not repaired. The failure and current mileages were approximately 905. Updated 3/13/13 *cn the consumer stated upon reversing the vehicle suddenly accelerated and hit the back of the house. The consumer tried to move the vehicle jumped, then it acclerated into the flower bed and fence. 04/02/2013