2012 Hyundai Genesis: sudden loss of power

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 May 25, 2022 · Engine · 39,750 miles · CA

I bought the car new, it has 39k miles on it. 5k miles ago while repairing the water pump under the 10 year powertrain warranty, I reported to the dealership the engine was making bad knocking/grinding sounds at startup and the oil consumption was high. The dealership dismissed this as "normal" for this car. 2 weeks ago the engine seized up without warning, no loss of power or harshness, no engine check light or low pressure warning. I had just left the I15 in rush hour traffic traveling at 70mph. The starter could barely turn the engine, I thought it was a flat battery. After some time I managed to restart the engine that now sounded like a machine gun and limp a few miles home. I tried replacing the oil, which I do on a regular basis, and it contained metal fragments. The warranty expired in Dec 21 but I still contacted the dealership. They have inspected the car and report engine damage requiring $3,200 of parts. Both the dealership and myself have contacted Hyundai Corp. and opened a Consumer Affairs Case on 5/25. Yesterday, 5/24, the case manager spoke to me to get details and obtain evidence I might have including original proof of ownership (documents he should already have). He told me he would have a decision in 2 to 4 weeks. I asked about leaving the car at the dealership, and he replied that it was the dealerships decision, but I would probably need to remove it. I would consider the car dangerous to drive, but the case manager does not seem to consider this and my impression is that Hyundai will refuse any responsibility for this problem. After googling this, I see you have sued Hyundai for what appears to be exactly the same manufacturing problems in other engines from the same time and wonder if these should also apply to the 5.0 liter engines. Has Hyundai acknowledged a problem with these engines and corrected it? If so, why has a recall not been issued, and I not charged for their manufacturing mistake? The dealership has rebuilt the engine and returned my car, charging me $3400.

Filed Jan 28, 2021 · Electrical, Engine · GA

Complete loss of all power supply and total mechanical system/engine no longer operational

Filed Sep 10, 2019 · Electrical · 120,000 miles · TX

Was driving down the freeway in stop and go traffic and had been driving for about 45 minutes. Had A/C on, radio on, phone charger and seat cooling. Suddenly all electronics stopped on the car, loss of power to brakes, power steering and no acceleration. Had to pull over across two lanes of traffic, thankfully the flashers worked and I was able to get to the side of the road. Put car in park and started car up again. Thankfully it was daylight and good weather.

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 Jul 25, 2018 · Engine · 88,000 miles · FL

Engine stalled randomly at lower speeds, usually while turning. Lose power steering and brakes - extremely difficult to control car and unbelievably dangerous. It has happened to me 3 times and my 16 year old daughter twice, all while turning from a highway or highway intersection. Fortunately I had told her it might happen to her and what to expect if it did. Given the number and consistency of other complaints filed, it is equally unbelievable that such a safety issue has not been investigated. It is so random that it will be very difficult to replicate, but given the potential for injuries or deaths this is an unacceptable manufacturer problem.

Filed Aug 29, 2017 · Electrical, Steering · 65,760 miles · AL

Tl* the contact owns a 2012 hyundai genesis. While driving 20 MPH and attempting to make a right turn, the vehicle lost power and the instrument cluster indicators illuminated. In addition, the steering wheel seized and caused the driver to lose control of the vehicle and run over the median. The contact was able to depress the brake pedal and stop the vehicle. Once at a complete stop, the driver turned off and restarted the vehicle on the first attempt and drove home. The vehicle was taken to a local dealer (capitol hyundai montgomery, 2820 eastern blvd, montgomery, al, 36116), but could not be repaired until two and a half weeks later. Due to the delay, the contact declined to proceed with scheduling diagnostic testing. The manufacturer was not contacted. The failure mileage was approximately 65,760.

Filed May 22, 2017 · Fuel system, Steering · 40,600 miles · CA

Veering right since new 7/2012 on freeway and city streets. Undercarriage right side "tweaked" per hyundai service rep in 2016. In shop since april 22 and out may 14, /2017 right control arm broken and coil spring bad (fixed per service rep), alignment still in red right front camber; steering wheel severely off center at times and now veers more to left and sometimes to right on city streets and highway; when coming to stop steering wheel becomes severely off center. In april 2017 was losing speed even though pressing on gas pedal and acting if wanting to stall several times with in a week (happening a few other times in past but thought due to being cold or bad gas.. When this happened psi light turned on. Happening on freeway and while merging onto freeway and other times on city streets. When this happened in april 2017 the last time with the wanting to stall problem steering wheel became really off center (dealer notified and taken to shop on 4/25/2017). Also would not go into reverse the same day of losing power wanting to stall. (happening a few other times in the past). Now AC air force low and doesn't cool as prior to being in shop 4/2017 and blows hot air at times. Airbag sensors not working properly as before shop visit 4/2017. Have had paint chipping problems on body of driver door and passenger door and around truck area. Has also had fuel pump issues, repeaired once (when pumping gas pump constantly clicking off). Poor suspension rear end feels like it bottoms out when going over bad road/bumps on freeway and city streets.

Filed Jul 6, 2016 · Electrical, Engine · 98,000 miles · CA

Driving home on the 405 fwy last night my genesis r-spec 5.0 lost all power, electrical and steering. Fortunately, I was on the right lane and was able to maneuver the vehicle off the fwy. I had no lights, no emergency flashers, complete shutdown of power. It was about 9pm and dark luckily it was not in a lane or this could have been fatal as I could not turn on any lights! Extremely dangerous and have reported my incident to hyundai customer care. Vehicle was towed to dealership pending diagnostics.

Filed Jan 8, 2016 · Engine, Transmission · 26,500 miles · FL

The car will not start when the temp outside is ~40 degrees f or lower outside. It will crank non stop (push button start) but won't ever start. Car battery is only two months old. Cranks fine when the outside temp raises back up to around 45 degrees f and up. While driving today on the interstate, on the bridge, the car randomly lost all engine power. Trying to step on the gas pedal would result in the car studdering. I turned on the emergency signal and just cruised into the side lane out of traffic. Turned the car off and on and noticed the RPM idled at 1500 RPM which is insanely high. I put it in 1st gear and gave it gas, and nothing happened. The RPM meter wouldn't go up. After a few more times of cutting the engine on and off and the engine wouldn't start a few times also, it finally started and seemed to work normally. Now the car has a check engine light on.

Filed Aug 5, 2015 · 37,300 miles · CA

When driving on freeway at 65mph the engine missed then stalled. I lost power steering and power brakes. Multiple warning lights on. Dealer is not finding anything using computer diagnostics. Loss of steering and brakes at high speeds is not good!!!!

Filed Sep 21, 2014 · Engine, Transmission · 49,000 miles · CA

I was trying to turn left onto a cross street and as soon as I got moving the car lost power for a few seconds that started going again...this as happen 4 or 5 times and I only owned this car for 3 weeks. Hyundai can't duplicate this happening....its on the hyundai forums and they sent me here.