2021 Jeep Grand Cherokee L Complaints

Passenger seat will always become inflated and will not deflate at times. The vehicle is shut down and seat is properly deflated, overnight it will return to inflated. This seems very unsafe for any passenger.

I brought my 2021 Jeep Grand Cherokee L to the dealership for its scheduled ~40,000 mile service. During that visit, I specifically reported that something felt off with the transmission/drivetrain. The dealership inspected the vehicle and stated that no issues were found. Approximately one week later, the vehicle experienced a sudden and severe drivetrain failure. While driving approximately 45 mph on a surface street and accelerating to cruising speed, the vehicle began shaking violently. There were loud mechanical noises from underneath the vehicle consistent with components coming apart. At the same time, the vehicle lost all ability to accelerate. Pressing the accelerator produced no forward movement. Due to the loss of power, I was forced to coast out of active traffic and onto a side street where I was able to safely stop. The condition was sustained and the vehicle was not drivable after the incident. When attempting to assist the tow truck driver, I shifted the vehicle to...

In May 2025 the vehicle randomly, and without warning, the instruments, gauges, and displays switched to Italian, changed to Metric, and we got the update and FCW Off light stuck on. Numerous other settings had been reset. Took to dealer and had to pay for the fix - they noted a STAR bulletin on my invoice. Then this past weekend (May 2, 2026) it happened again. At least this time it didn't go Italian and Metric on me, but lots of other settings were changed. Did not test the paddle shifters but will do that soon. Current software version says FCA-MY24.U29.42-PROD. I've seen other posts with a newer version - not sure if / why not on my Jeep yet.

While stopped at a red light, the auto start/stop feature of the vehicle failed to re-start the car causing complete failure. My wife was the first vehicle at a the light in a busy intersection with a [XXX] old in the vehicle. The electronics of the vehicle completely failed causing complete shutdown and unable to restart. Vehicle was towed after blocking intersection for 30 minutes. This has happened before but not for total and complete failure. This failure caused a complete battery drain leading to the need for two new batteries. The vehicle has a history of electronics/software issues and failures and associated start/stop system issues. This failure was diagnosed to be caused by a faulty relay and costed me $2000 in repairs. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Vehicle: 2021 Jeep Grand Cherokee L Issue Type: Electrical System / Loss of Power / Braking System While operating my 2021 Jeep Grand Cherokee L on Interstate 40 at approximately 70 miles per hour, with two minor children in the vehicle, the vehicle suddenly and without any prior warning began to rapidly decelerate, despite continued pressure on the accelerator pedal. At the time the deceleration began, there were no warning lights, alerts, or indications of any malfunction. The vehicle exhibited a significant loss of power, and it felt as though it was being mechanically restricted or “dragging,” severely limiting its ability to maintain highway speed. Only after the vehicle had already begun to decelerate did a brake system warning indicator appear on the dashboard. This sequence of events indicates that the warning system did not provide advance notice of the failure. This sudden and uncommanded deceleration created an immediate and serious safety hazard, particularly given the...