2026 Hyundai Palisade engine problems

Filed Nov 2, 2026 · Electrical, Engine · WA

On XXX, while traveling southbound on [XXX], the vehicle crossed the intersection of [XXX]. Approximately 50 feet past the intersection, the vehicle experienced a sudden, complete loss of motive power and total electrical system failure without any prior warning. The entire instrument cluster and infotainment system went completely dark. All electrical controls failed immediately, including the hazard warning flashers, which could not be illuminated to warn oncoming traffic. Because the vehicle utilizes an electronic gear selector, the transmission could not be shifted into Park (P) or Neutral (N). I was forced to bring the vehicle to a stop directly in the active roadway lane and manually hold down the mechanical brake pedal to prevent rollaway. This sudden vehicle blackout and total loss of propulsion in active traffic created an immediate life-safety hazard, stranding the unlit vehicle in a live traffic lane without emergency signals. The vehicle had to be towed via tow truck to dealer. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 24, 2026 · Electrical, Engine · ND

Our 2026 Hyundai Palisade has experienced repeated dangerous electrical failures while driving. XXX All instrument displays went completely black while driving. The engine continued running. Gateway Hyundai in Fargo, ND, checked the vehicle but verbally reported finding no diagnostic codes. XXX While driving on the highway at night, the interior displays and exterior lights repeatedly flickered off and on. XXX The vehicle unexpectedly lost power and shut down at highway speed, requiring a tow to Don Bessette Hyundai in [XXX]. The dealership documented 36 stored diagnostic trouble codes, primarily communication faults. The codes were cleared, and an ECM software update was performed. No confirmed cause was identified. XXX The instrument panel went completely black twice while driving, lasting approximately 10 minutes and 14 minutes. XXX While driving at night, the interior and exterior lights again flickered off and on. Approximately 30 minutes later, the instrument panel went black and the exterior lights dimmed. We pulled over, activated the hazard lights, and restarted the vehicle, but normal lighting did not return. We drove approximately 14 miles with hazard lights on to reach the nearest town. The lights eventually returned, but the instrument panel continued flickering, the front camera repeatedly reported being disabled, and driver-attention warnings appeared during the drive home. These failures continued after dealership service and a software update. We are concerned about another sudden loss of engine power, headlights, or critical driver information at highway speeds. These failures pose a serious safety risk to occupants and other motorists. We request that the federal safety agency investigate these electrical failures. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 12, 2026 · Engine, Fuel system · CO

The engine misfires and runs very rough when stopped in drive after highway driving, and the vehicle hesitates and struggles to accelerate from a stop. At about 3,000 miles, Phil Long, Colorado Springs diagnosed a failing cylinder 6 fuel injector and replaced it on 22 April 2025. The problem continues after that repair. The condition repeats in the same way. After 15 minutes to 1 hour of interstate driving, I exit the highway. When I stop at the first traffic light on the off ramp, the engine begins idling very rough, and the tachometer shows about 500 RPM. When I shift to park, the idle smooths out. When I shift back to drive, it becomes very rough again. Pulling away from the light is difficult because the vehicle hesitates and does not accelerate normally. This has happened three times since the repair, most recently on [XXX] at about 5,800 miles. The check engine light did not come on. Conditions: 80 F, clear weather. [XXX] exit [XXX]. This is a safety concern because the vehicle may not accelerate when I pull into an intersection or merge into traffic. Other 2026 Palisade owners have reported similar misfires and hesitation, and Hyundai issued TSB 26-01-068H (Service Campaign 9D6) for engine misfires on 2026 Palisade 3.5L vehicles. I have asked Hyundai to confirm whether this campaign has been performed on my vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 11, 2026 · Acceleration, Driver assistance · FL · crash

On September 21, 2026, at approximately 9:20 AM, while attempting to turn off the engine of the parked vehicle, the engine failed to shut down as commanded. Due to severe ECM misfire and erratic anti-stall compensation, the engine surged uncontrollably and propelled the vehicle forward. The Forward Collision-Avoidance Assist (FCA) completely failed to detect the obstacle, alert the driver, or apply emergency braking, resulting in an unavoidable low-speed collision and slight front-end body damage. The following day, on September 22, 2026, at approximately 2:49 PM, the vehicle abruptly triggered a powertrain fail-safe mode in traffic, forcefully restricting speed to roughly 20 mph (limp-in mode), when my wife found it when trying to running faster from a STOP mode, to prevent catastrophic catalytic converter damage caused by persistent combustion misfires. It is impossible to be the wrong operation of my wife since limp-in mode cannot be activated during low speed running. On September 23, 2026, the vehicle was taken to an authorized Hyundai dealership to apply pending TSB 26-01-068H (Campaign 9D6). While the dealer completed the software update and reported no active DTCs remained afterward, Hyundai Motor America has flatly denied manufacturer liability for the property damage incurred directly prior to this safety remedy. Hyundai's ECM software logic flaw poses a critical safety risk involving unintended acceleration, complete shutdown failure, and active safety system non-intervention. I request the federal safety agency investigate this defect and Hyundai's refusal to remediate related incident damage.

Filed Sep 4, 2026 · Engine, Seats · CA

Seats still don't work after recall fix on 2nd and 3rd row. Front seats also do not work when moving 2nd row seat front to back front seat moved instead. Power train engine issues been in hyundai service 3 times diff services depts and still not fixed have not been able to drive car since mar due to these issues. Engine light on 3 power train warning codes on. When pushing gas car hesitates and almost completely stops on freeway or on only 2 way highway making it very unsafe to drive. Loos of power to ac and lights due to this issue!

Filed Sep 2, 2026 · Engine, Transmission · FL

I am reporting a recurring safety issue with my 2026 Hyundai Palisade Calligraphy involving severe shaking, sputtering, loss of acceleration/power, stalling, and abnormal drivetrain behavior. The first incident occurred at just under 10,000 miles after driving for approximately one hour. While traveling at highway speeds, the vehicle began shaking severely and lost significant acceleration/power. After exiting the highway and stopping, the vehicle shut off. When restarted, it continued shaking and would not accelerate normally. No warning lights appeared. The dealership reported multiple stored fault codes, including transmission-related codes. The codes were reset and the vehicle was returned to me. The same condition later occurred again after extended driving. The vehicle shook severely and lost acceleration, again without warning lights. After being turned off for approximately five minutes and restarted, the symptoms temporarily disappeared. The vehicle has since undergone multiple repair attempts. Hyundai/dealership technicians replaced the flywheel. After that repair, the vehicle developed new shaking/stuttering during startup and shutdown. The vehicle was returned again and a motor mount was repaired/replaced. Two days after receiving the vehicle back from the latest repair, it is now exhibiting another serious drivability issue and appears to remain in first gear or otherwise fails to shift normally. I have video of the severe shaking. A dealership technician also advised me that multiple other 2026 Palisades at that dealership were experiencing similar issues and Hyundai had not determined the underlying cause. I am concerned the vehicle may unexpectedly lose propulsion, stall, or fail to accelerate in traffic or at highway speeds. Multiple repair attempts have not resolved the safety concern. The system will not allow me to upload the videos I have, but you may contact me for them.

Filed Aug 6, 2026 · Engine · 3,000 miles · WI

The contact owns a 2026 Hyundai Palisade. The contact stated that while driving at various speeds, the vehicle went into LIMP Mode and decelerated to 20 MPH. After parking and restarting the vehicle, the failure was self-corrected, and the vehicle operated normally. The vehicle was taken to the local dealer, who was unable to determine the cause of the failure. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 3,000.

Filed Jul 22, 2026 · Engine, Transmission · TX

My car is misfiring. It WILL NOT accelerate as it should. It is like bogging down unable to accelerate when it needs to. It’s struggling. Hyundai is aware of the issue and making owners drive regardless while they “wait for a fix”. It’s extremely dangerous. I’ve almost been hit several times trying to merge onto a highway because it will not accelerate. I’ve had total loss of power one time, putting me and my infant in extreme danger. This has been happening since APRIL.

Filed Jul 1, 2026 · Engine, Seats · CA

In March had issues with driver and passenger seats not moving up and down without getting stuck have to mess with it for awhile to move up or down and sometimes won't go to a directions it can move to seat even though setting it in a certain position every time turn off car and start goes to a position to high up in a way can't get In till you put it down then get in car when moving the 2nd row seat the passenger seat moved front back instead then folding seats 2,3rd row not working correctly found out mid mar recall 2,3rd row folding issues child died, 3rd row seat belts called Corp said do not allow passenger in 2nd, 3rd row till fixed called service said no fix so had wait week later car was hesitating when push gas engine power train warning light came on tow car to dealership they lied proof in writing they lied said fix the seats even though at that time no fix for recalls only reset engine light even though car was giving Issues almost broke down they had car 8 day made me pick up car said was fixed proof it wasn't they threaten harassed me to get it I said recalls show on the federal safety agency still till off not fixed won't come so they said day I had bring loaner car back or they come repo it they removed it from the federal safety agency site that day said see it's off I said there no way if no fix yet recalls I called many service dept ask went on hyundai Corp main site said fix for seat belt mid may this was April 7 and I ask them to put in writing several times car safe for my 3 yr old grandson they never once say car safe they illegally fraud took recall off the site all to get me come get car got car seats not fixed they said in writing seat belt fixed with tape tape? They put on the federal safety agency recalls after got car I confronted them then they removed again to not get in trouble to take off then on. But no seats fixed and could not put passenger car barely drove car was still hesitating gas ac loos power not even month later engine light power train issue again but not just light defect cause

Filed Jun 8, 2026 · Engine · NJ

I was driving my 2026 Hyundai Palisade on a busy road when the vehicle suddenly stopped without warning. A message appeared on the dashboard stating that the engine was off. I did not turn off the vehicle. This created a dangerous situation in traffic.