2012 Hyundai Sonata Hybrid: hesitation when accelerating

Filed Aug 11, 2023 · Engine, Transmission · AL

The contact owns a 2012 Hyundai Sonata Hybrid. The contact stated while driving at various speeds, the message "Pull Over. Stop the Vehicle" was displayed, and the vehicle failed to respond upon depressing the accelerator pedal. The contact veered to the side of the road and turned off the vehicle. The contact stated that the vehicle became drivable after waiting 30 minutes to an hour. The contact stated that the failure had been recurring while driving. Additionally, the contact stated that while reversing and depressing the accelerator pedal, the vehicle jerked, made an abnormally loud sound, and failed to respond. The contact shifted into park(P) and shifted back into reverse(R), and the vehicle jerked and responded. The contact stated that while driving at various speeds and depressing the accelerator pedal, the vehicle jerked and hesitated to respond. There was no warning light illuminated. The contact stated that she had taken the vehicle to an independent mechanic, where a diagnostic test was performed. The contact was referred to the dealer for assistance. The dealer and the manufacturer were not notified of the failure. The vehicle was not repaired. The failure mileage was unknown.

Filed Jun 10, 2021 · Fuel system, Transmission · 130,000 miles · FL

The contact owns a 2012 Hyundai Sonata Hybrid. The contact stated while driving at various speeds, the vehicle hesitated and stalled while depressing the accelerator pedal. There was no warning light illuminated. The contact had taken the vehicle to multiple independent mechanics who were all unable to diagnose the failure due to no warning lights illuminating on the instrument panel. The contact then had the vehicle towed to the dealer where the mechanic was also unable to diagnose the failure. The mechanic informed her that the transmission needed to be replaced. The vehicle was not repaired. The failure mileage was approximately 130,000.

Filed Oct 13, 2020 · Engine, Transmission · 117,000 miles · TX

Tl* the contact owns a 2012 hyundai sonata hybrid. The contact stated that while driving, an unknown warning light illuminated indicating to stop the vehicle do not drive. The vehicle was taken to clay cooley hyundai of mesquite (16230 lyndon b johnson fwy, mesquite, tx 75150) and was diagnosed that the fuel pump that go to the transmission failed and was replaced. The contact stated that the vehicle was picked up at the dealer and while leaving the dealer, the vehicle stalled. No warning light was illuminated. Additionally, while depressing the accelerator pedal, the vehicle hesitated and stalled. The vehicle was taken back to the same dealer and the contact was informed that the transmission needed to be replaced. The vehicle was not yet repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 117,000.

Filed Oct 10, 2017 · Fuel system · 93,000 miles · VA

The problem occurred at a stoplight midway through my trip home from out of state. The car started "chugging" like it was not getting gas and hesitated. Soon after the check engine light came on and we had to exit the highway and pull off to get it checked. The auto parts store code reader came up with a fuel pump or fuel filter problem. We were directed to the closest auto repair shop as our car was unsafe to keep driving. We had to purchase a new high pressure fuel filter for our car. $577 for part, total bill $734. The dealership says this is only covered for 5 years/60 miles. My kids is 5 years/3 months and 93000 miles. The dealership and shop state they are repairing more and more of these. I feel this part should be recalled and I should be reimbursed for the repair.

Filed Oct 25, 2015 · Engine · 55,437 miles · CA

While driving it down the street started to hesitate frequently while driving then heard a loud clanking sound which continued on while driving it to dealer. Dealer looked at it and we were told the motor had gone out and needed to be replaced! They also said we had to pay for it because they said our oil changes were not approved! Once we got the paper work back they quoted they found oil build up and large chunks of metal throughout the engine that has contaminated the valve train. They had to replace engine, cylinder head, valve, valve spring, camshafts ,gaskets! Now they are issuing a recall on hyundai sonatas for this exact problem , but they are also saying our car is not included in the recall even though what they fixed is the exact problem that is listed on the recall. It took them almost 2 months to have our car in the shop because they couldn't find the parts needed to fix the engine!!!!

Filed Apr 5, 2015 · Electrical, Transmission · 22,500 miles · FL

Check charging system light comes up, some times cant change from drive to reverse, other times change park to any other gear, have to turn the car off and on again . The car jumps when getting out of EV mode, hesitates when going out of EV mode, making it very dangerous at a intersection and u turns. I found so many complains about the hyundai hybrid 2012 , .....same problems, how come nobody does anything ???

Filed Jul 21, 2014 · Transmission · 23,200 miles · TX

I had been experiencing a hesitation when accelerating, a lurch when hitting the brake as well as sometimes when accelerating as though the gears could not shift properly. This did not occur as often if the car was out of blue drive. This had been going on for about 4 months. I had taken it to a dealer and called a service department but none of them could explain why it might be happening and I could not make the issue repeat once I got it to the dealer. On saturday I went to drive my car, pulled out and was going about 40 MPH about 2 min after I had started the car and all of a sudden my foot was to the floor, the RPM was all the way up to red and my car was slowing down! I pulled over turned the car off and started it again, I pulled out again and it began to do the same thing but when I hit the brakes the car lurched forward worse than ever before. I pulled into a gas station cut the car off and got out to let my boyfriend try it (he had been following me in his car and did not know what was wrong). When he got in to try it he tried to put it in reverse and it would not shift at all. It was like it was still in park, but when he tried to put it back in park the car responded as though he had shifted it. Obviously something was very wrong with the transmission. We called the 24 hour roadside assistance and got towed to the nearest dealership. They mechanics spent all day taking it a[art and could not find the source of the problem. The senior mechanics came in on monday and said I would need a new transmission, that the existing transmission was "all burned up" they claim this is a rare internal problem and that a new transmission will fix the issue. All of this was covered under my warranty but it could have caused major problems had I been on the highway when this happened!

Filed Nov 6, 2013 · Brakes, Electrical · 1,800 miles · WA

Purchased new in mar. 2013, not our first hybrid. Car began to have shudder/jerky/rough take off from morning start and first stop sign at end of street. This became more often and worsened. One morning left curb as usual, brakes locked up at stop sign and warning light on dash for brake problem. Was able to back car back into curb spot and had towed to dealership. Date given was about the towing date. Car was in shop around three weeks due to needing new brake module or something that was leaking internally inside brake unit from factory. Car also had issue to were the battery would not charge properly. Worked correctly when purchased but then would not charge past 50% and usually less than. Repairs made and lots of updates and sensor adjustments and we were given car back. Sadly it only lasted a few months and had to be towed again. Late aug, early sept, the car started to jerk at take off again. I tried just sitting at curb for awhile after starting car to let sensors warm up. This seemed to help for short time. Problem worsened again until wife complained. I drove full time and it had gotten worse to bad and all the time. Bad acceleration, like brakes not letting off. Last straw! Nov 1st 2013, car jerked and shuddered at take off, brakes locked up solid at stop sign, locked up again at second stop sign, entering traffic to get back home ... Car stopped dead in middle of left hand turn in middle of highway!! Fully loaded log truck coming at me passenger side. Took 2-3 hard stomps on accelerator peddle to get car moving, gas engine finally revved high but car just crawled forward!!! Thankfully the truck had started braking as soon as he saw car hesitate in street and car crawled forward enough that I did not get hit. But that grill filled the entire passenger window. Car towed to shop again on mon 4th am. Called on 5th, huge software update, but no guaranty !?!??