2021 Jeep Wrangler Speed Control & Cruise Problems

"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. Dealer admits software is 'more sensitive' than previous versions but has no physical way to resolve the safety defect." The manufacturer-authorized repair facility stating they want to release an unsafe vehicle back to me without a remedy. "There is nothing for any of us to do with your vehicle here at Chapman" and tells you to contact Chrysler. The Video Screenshots that show the gauge spikes (RPM/Oil needles jumping and dropping to zero).

Date: [XXX] Subject: Immediate Safety Concern – 2021 Jeep Wrangler Sahara 4xe – Acceleration Failure Dear Jeep Customer Care, I am the owner of a 2021 Jeep Wrangler Sahara 4xe, VIN [XXX] , with approximately 50,000 miles. I am writing to report a critical and potentially fatal safety defect that occurred multiple times on [XXX], most notably at the intersection of [XXX] and [XXX] in Oregon. On multiple occasions, when attempting to accelerate from a full stop into an intersection with cross traffic traveling at 55 mph or more, the vehicle failed to respond to throttle input. Instead of accelerating, the Jeep simply rolled slowly into the intersection despite my foot fully depressing the accelerator pedal. This placed me at immediate risk of being struck broadside by oncoming vehicles at high speed, which could have resulted in catastrophic injury or death. The check engine light was on since [XXX] and my husband drove the Jeep to Lithia Chrysler Dodge of Bend (Oregon) on June 4th, 2025, 12 pm. They ran a computer test and told my husband that there was a recall on the battery but that we could still drive the car, and it was safe but not to charge the car (we followed instructions). We couldn’t even secure a vehicle appointment until July 2nd, 2025. How do you not prioritize a potentially critical situation? This defect is entirely unacceptable and renders the vehicle unsafe for operation. I will not drive the vehicle further due to the danger involved. Given the severity of this defect, I request: •Immediate investigation by Jeep/FCA engineering and technical teams. •Safe transport (towing) of the vehicle to an authorized service center at Jeep’s expense. •Full documentation of the inspection, diagnosis, and resolution of this issue. •Confirmation of whether this issue has been reported in other 4xe vehicles or constitutes part of a larger safety defect investigation. I am documenting this issue formally INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

After taking my jeep 4xe in for the 95B recall I drove around 50 miles and the check engine light came on. Once home vehicle would not turn on or charge. Error on dash said “charging system error.” Next day the vehicle would turn on be experience extreme slowness after stopping with bursts of acceleration. The accceleration and breaking system were extremely jerky and I felt like I didn’t know how the car would respond when accelerating which was dangerous.

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. Due to my non-resolved safety concern, I am raising the issue in this forum so hopefully something can be done and others that potentially have the same issue can reach a resolution as well. My hypothesis of the cause of the issue is when the Y81 recall happened, it tuned down the emissions output that was originally higher necessary for the vehicle to run, because I didn't have check engine lights before. By this tune-down of emissions, the engine is not able to produce the correct output to run the vehicle and thus the random lack of power causing a safety issue, and is currently adversely affecting components that are causing the P0133 O2 sensor to alert.

Dates of problem may 18 and June 9 The Jeep has engine light on the throttle control light is on I was driving on a highway and the vehicle completely went into limp mode would not go above 33 mph and almost caused an accident since the Jeep went into limp mode brought it to dealership they said the fixed it then a 2weeks later it happens again this time with my son in the car going 60 mph it does same exact thing this vehicle is a safety hazard for me and now I’m afraid to drive it at all having to pay for towing and it’s a leased vehicle just dosnt make sense to me what’s the lemon law on this

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.

Red Turtle warning light appears and the vehicle slows down immediately to 5~8 mph. Happens without warning and apparent triggers. Occurred multiple times in last week on freeways, exiting parking lot and on side road.