2012 Hyundai Genesis: hesitation when accelerating

Filed Jul 28, 2024 · Transmission · IL

During normal driving conditions, the 8 speed automatic transmission will randomly hesitate to upshift from 2nd to 3rd and from 4th to 5th, causing an unpredictable loss of power. Symptoms will show up intermittently, and do not seem to be caused by certain events. This is unsafe because the unpredictability of the problem could cause power loss during moments where acceleration is needed to avoid an accident (moments which would otherwise be completely safe, i.e. merging onto a freeway, turning across incoming traffic, right turns into the direction of traffic, etc.) This problem already has a TSB issued by Hyundai. Problem has been reproduce by a technician. Component has been checked by a technician. There are no warning lights or other symptoms before failure.

Filed Apr 4, 2024 · Engine · 210,034 miles · FL

The contact owns a 2012 Hyundai Genesis. The contact stated that the vehicle hesitated to start and made a continuous clicking sound before starting. Additionally, while driving at approximately 40 MPH, the vehicle stalled. The contact stated that the ABS, and traction control warning lights were illuminated intermittently. The vehicle was taken to an independent mechanic where it was diagnosed with a drained battery. The vehicle was repaired; however, the failure recurred, and the vehicle was taken to the same independent mechanic where it was diagnosed with a faulty tensioner. The vehicle was repaired; however, the failure recurred, and the vehicle was taken to the same independent mechanic where it was diagnosed with an unknown failure. The mechanic stated that there was no available fix for the vehicle and referred the contact to the federal safety agency Hotline. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 210,034. The VIN was not available.

Filed Nov 15, 2023 · Transmission · 155,620 miles · PA

The contact owns a 2012 Hyundai Genesis. The contact stated while driving at various speeds, the vehicle hesitated while depressing the accelerator pedal. There was no warning light illuminated. The vehicle was taken to an independent mechanic and diagnosed with transmission failure. The contact stated that the check engine light was later illuminated, and the vehicle was taken to a second independent mechanic. The mechanic retrieved a code for a defective pressure sensor. Upon investigation, the contact discovered Manufacturer Communication Number: 16-8at-011) which he linked to the failure. The manufacturer was notified of the failure and informed the contact that the vehicle was not covered under the Manufacturer Communication Number. The vehicle was not repaired. The failure mileage was approximately 155,620.

Filed Aug 27, 2017 · Engine · 3 miles · CA

While driving straight on a level city street at night at about 30 MPH, without notice or hesitation, the engine completely quit/shut down--no power brakes or steering. I pulled over and the car coasted to a stop. All the lights went on on the dash and headlights stayed on, so there was battery power available. I placed the car in park and it restarted and drove normally. However, this has now happened three times now in last 6 months without warning.--very dangerous.

Filed Sep 20, 2013 · Acceleration · 8,500 miles · PA

While driving 25 MPH I tried to accelerate the vehicle to avoid collision. Vehicle hesitated to accelerate for a few seconds when accelerator pedal was pressed. Later I tested a vehicle noticed similar consistent hesitation at various speeds. Took vehicle to the dealer. Hesitation was recreated and documented, however dealer was unable to find anything wrong with the vehicle and based on that stated that condition is normal, refusing repair.