2021 Jeep Wrangler Acceleration Problems

Which parts fail

• Accelerator pedal
  1

Components named in complaints (accelerator pedal, throttle, sudden acceleration, cruise control).

Mileage when the problem started

Owner reports

Selected complaints filed with NHTSA by 2021 Jeep Wrangler owners, lightly cleaned up (personal details are redacted by NHTSA).

The contact owns a 2021 Jeep Wrangler. The contact stated that while pulling into the parking space, the vehicle suddenly lunged forward crashing into the rear of a parked vehicle which then crashed into the rear of a second parked vehicle. The contact indicated that the vehicle lunged forward while the accelerator pedal was released in order to press the brake pedal. During the incident, no injuries were reported. A police report was taken at the scene. The cause of the failure was not determined. The local dealer and manufacturer was notified of the failure. The failure mileage was 9,000.

The contact owns a 2021 Jeep Wrangler. The contact stated while attempting to park the vehicle, the vehicle independently accelerated while the brake pedal was depressed. As a result, the vehicle crashed into the rear of a vehicle parked on the street. The air bags failed to deploy. A police report was not filed. There were no injuries sustained. The vehicle was not drivable. The vehicle was towed to an impound lot. The vehicle was not diagnosed nor repaired. A dealer was not contacted. The manufacturer had not been informed of the failure. The failure mileage was 930.

July 2024 - driving over 40 mph the Rubicon on a busy two-lane highway with my [redacted] and lost all acceleration. Interior warning lights started flashing with the warning, "Service Electric Throttle Control." As this was up hill, there I nearly started going backwards and two vehicles swerved around me as I was able to pull over. As cars honked that drove by, I turned the vehicle off which was at this point, making a rattling/wobbling noise. I turned the vehicle back on and off at least three times, with hybrid vehicle working. As I was two miles from home, I was able to get back with the vehicle dropping acceleration (with no horsepower and no ability to go on gas mode) twice until I rolled back in basically neutral. We called USAA to have the vehicle immediately towed to Jeep Rairdon in Kirkland, WA. …

While driving my vehicle in four-wheel-drive low, with no lockers engaged I noticed that the rear wheels at different times were dragging, I could also hear and feel the ABS module actuating. During these events I would have diminished breaking capabilities and no ABS warning lights. it was doing it under 5 miles an hour at first and then higher speeds. I got a service ABS, service traction control, service stability control, four-wheel-drive unavailable, service four-wheel-drive system Messages all of a sudden, and i disengaged the four-wheel-drive lover back to 2 Wheel Drive. At this point the brake pedal was hard and would not move, my back left wheel was completely locked. I shut the vehicle down waited a few minutes and restarted it, all of the lights were still active but I was able to move the vehicle. I began traveling forward and the rear wheels alternated locking up. …

I took my 2021 diesel Jeep in for a Y81 Emissions recall on 02.19.24. Since then, my vehicle has had its check engine light go on SIX TIMES with a P0133 alert which refers to an O2 sensor. I have taken it in to the dealership for a resolution six times. Currently, it is set to be diagnosed and repaired yet one more time on 01.22.25. Now we are in the middle of winter and I feel like the vehicle is about to die at intersections and roundabouts when I approach them. I tried to go through an arbitration with FCA USA LLC which produces the Jeep brand and it was denied for a repurchase of the vehicle because the arbitrator felt it was not a safety issue since I still drive the vehicle and they are technically not in violation of the warranty which I did not accept as a resolution. …

2021 jeep wrangler 4xe , power loss twice after recall was completed in 2022. INCIDENT AFTER RECALL completed. 1st - power loss, turtle sign. got stuck in hope BC, Canada. ECU FLASH fixed it, chilliwack, BC. 57000 miles roughly. Hv battery voltage sensor ckt performance issue. 2nd time- 62000 miles roughly, ABRUPT POWER LOSS on a highway, driving in passing lane 75mph, engine check lights on, after few secs full power loss, all lights on. After 30 mins of park mode, all lights went away. Towed it to dealership. They ordered a part, and is still stuck at dealership, since 15 days. Used my judgement & managed to safely coast and avoided risk of any incident. Turtle sign, and i think and something with battery verbiage popped up. Couldn't take an image as was in reactive mode. Parked and turned off the engine, called tow truck. …

What component or system failed or malfunctioned, and is it available for inspection upon request? -After the 68C recall update for the HV battery failures, the vehicle has not been able to consistently maintain or provide power due to the limitation of the battery introduced as part of the recall. This is most noticeable driving in Electric Mode below 60% charge. The throttle behavior is inconsistent and unpredictable due to the recent updated How was your safety or the safety of others put at risk? -I was merging onto a controlled access highway and unable to accelerate after pulling into the travel lane from the merging lane due to the limitations of the battery power. The engine did not respond in time to provide power to the vehicle. The occurrence of the loss of power is unpredictable. …

While driving on 131 northbound just before the Saginaw croton exit my Jeep lost power I was in the left lane had to merge across to the right to exit and all the lights were on noting charging system needs service I got off highway onto ramp and coasted to side of ramp and realized it was not even on anymore. I immediately shut it off checked my uconnect app for a service warning and it said charging system failure all the lights on the dash were alerting me until it shut down I sat for a bit and tried to start it and it did but was jerky when attempting to drive. I switched to esave and the engine kicked in but was also doggy. I had 60% battery so I'm not sure what happened. I attempted to plug in when I got home and it blew breakers anywhere I attempted to plug it in and made a very loud pop! I didn't try it anymore at home as it scared me. …

"The vehicle exhibits a recurring Loss of Motive Power (LMP) during low-speed maneuvers (intersections) and highway speeds (50+ mph). The failure is preceded by erratic instrument cluster behavior (gauge spikes) and results in a total loss of propulsion without prior warning. This defect persists despite the completion of Recall ZB7 and Recall 68C. The dealership has duplicated the failure but refuses further repair, stating the vehicle is 'out of scope' for current remedies, placing the driver at high risk of a collision." Screenshots include: "Written admission from Jeep dealership confirming duplicated loss of motive power and acceleration struggle following a software update. …

While driving my 2021 Jeep Wrangler on the highway, the vehicle displayed a warning indicating a malfunction with the Electronic Throttle Control system. Immediately following the warning, the vehicle experienced a significant loss of acceleration and would not respond normally to accelerator pedal input. The vehicle subsequently began accelerating/surging without my commanding the acceleration. The unintended acceleration was significant enough that I had to apply the brakes to prevent the vehicle from striking traffic ahead of me. This created an extremely dangerous situation because the vehicle's acceleration became unpredictable, alternating between loss of accelerator response and acceleration that I did not command. The vehicle is a 2021 Jeep Wrangler, VIN [redacted]. …

Acceleration complaints in other Wrangler years