2019 Hyundai Santa Fe: stuck in gear or won't shift

Filed Sep 2, 2026 · Engine, Fuel system · VA

Update Re: ODI Complaint Number: 11759237 Subsequent Actions and Manufacturer Refusal to Remediate Safety Defect: ​Following the [XXX], acute safety incident—where the vehicle lost motive power and entered severe limp mode on [XXX] immediately upon release from Sheehy Hyundai of Chantilly—the vehicle remained in dealer custody for 11 days (August 20–August 31, 2026). ​Failure to Diagnose Core Defect: Despite recurring total power loss, active diagnostic trouble code P00AF00 (Turbocharger Boost Control Module Performance), and four consecutive turbocharger destructions within 20,000 miles, the authorized dealership refused to conduct internal engine diagnostics, drop the oil pan, inspect the oil filter, or perform borescope checks. ​Physical Contamination Documented: On August 29, 2026, an on-site physical inspection confirmed sparkling metallic particulate suspended in the engine oil on the dipstick and substantial oil blow-by/intrusion into the turbocharger air intake line. ​Formal Denial of Safety/Warranty Coverage: On August 31, 2026, dealership management and Hyundai Motor America (Consumer Affairs Case #[XXX]) formally denied warranty assistance and refused engine teardown under the Theta II Lifetime Engine Warranty Settlement. Coverage was declined citing "outside influence" due to an aftermarket turbocharger assembly, while Hyundai refused to investigate the underlying engine failure contaminating and destroying the forced-induction system. ​Evidence Preservation: On August 31, 2026, the vehicle was towed to an independent facility to mitigate road hazards, conduct teardown diagnostics, and preserve the engine oil/filter for ISO-accredited spectrographic laboratory analysis. ​The manufacturer released an unsafe vehicle into traffic on August 20, 2026, and subsequently refused to investigate or remedy a documented internal engine failure that creates sudden, recurring loss of motive power. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 24, 2026 · Engine, Fuel system · VA

The vehicle suffers from recurring, sudden loss of motive power and transitions into engine "limp mode" while driving in active, heavy traffic. This severe drivability defect has occurred on four separate occasions under Diagnostic Trouble Code (DTC) P00AF00 (Turbocharger/Supercharger Boost Control "A" Module Performance) and related boost/MAP faults (P0234). During these episodes, the vehicle abruptly loses acceleration capability without warning, creating an acute collision risk when navigating highway traffic and intersections. The turbocharger assembly has required replacement three separate times due to recurring oil contamination from the engine crankcase. Despite meticulous maintenance (documented synthetic oil changes every 3,000–5,000 miles since new), the manufacturer and dealership have repeatedly blamed peripheral turbo components rather than diagnosing or repairing the root cause (I suspect excessive engine crankcase pressure/piston ring blow-by based on the significant oil deposition on the turbo, map sensor, and pooling in the intake line).

Filed Feb 10, 2023 · Engine · GA

Car just stopped working one day. First oil on spark plugs got them changed then the coil packs now oil is on the air filter. Car drivers really hard and doesn't shift properly. Took dealership and they aren't really helping or even trying to diagnose my car.

Filed Jan 22, 2023 · Transmission · AZ

Was driving my 2019 Hyundai Santa Fe and it completely shut off when I was stopped at a red light. Super scary! I could not get the vehicle to start again and had to call police to help. Had my hazard lights on but still felt very unsafe because there was traffic that had to go around my vehicle. Tow guy was able to get it to start again but said the transmission felt jerky. The vehicle was towed back to my home. Then the next day the vehicle was able to start and seemed fine. I had a friend drive it to the dealership while I followed behind in another vehicle. Half way there, it did the exact same thing. Was stopped at a red light and it turned off. The reason felt like a hard shift to the transmission. The engine would start but it would not shift to drive. It had to be pushed out of traffic. A few people stopped their vehicles to help push. After it was pushed to a safe spot, I had it towed to the nearest Hyundai dealership. The dealership service tech thought it just needed a new starter. He installed the starter and some update software and claimed it was fixed. Picked up the car, drove it home and it seemed fine. The next day I needed to use this car to drive my three children to school (one of my kids has special needs). I felt the transmission jerking half way there and by the time we (thankfully) made it to the school parking lot, it did a hard shift and died. That could have been very scary and unsafe if we were stuck in traffic and it died! I had it towed back to the dealership. This time around the service tech said it needs a new transmission. It’s a 2019 vehicle with 40,000 miles. It shouldn’t need a new transmission. I don’t feel safe driving this vehicle, especially with my three children!

Filed Oct 18, 2019 · Engine, Transmission · CA

I have a brand new 2019 santa fe ultimate 2.0t leased in august with 1600 miles and I have already had the car in twice where they have had to recalibrated the transmission. Whenever I was at a stop or waiting to make a turn I would put my foot on the gas pedal and the rpms would go up but the car wouldn't move. I was almost rear ended a couple of times because the car wouldn't go into gear and move with the gas pedal pushed all the way down to the floor and then all of sudden the transmission would shift into gears. This should not be happening to a brand new car! Looking at different models this seems to be an on going problem with hyundai. I haven't been able to enjoy my car because it's been in the shop. They fix it and it works for a week or so and then it happens again. Something is definitely wrong! I was told if it happens again then they will call the main headquarters. They should be doing that already to find out how to fix it once and for all so I don't have to keep coming back. I hope you will look into this matter.