Jeep Grand Cherokee adaptive cruise problems

Filed Sep 20, 2026 · Brakes, Driver assistance · MI

ABS module completely malfunctioned from a shortage. Threw up 7 different codes, even threw up my check engine light for a bit. Can’t even use cruise control because my “memory system” and “park sense” are unavailable. Sometimes it makes the wheel super stiff and the acceleration and break pedals super sticky. I see many recalls for 2020 Jeep Grand Cherokee’s, and believe mine should be included. I should’ve have to pay $3,000 out of pocket for something a ton of people are reporting as an issue. I found one reported a few months back with the same issue.

Filed Sep 5, 2026 · Acceleration, Electrical · MA · crash

While maneuvering in a parking garage and switching between reverse and forward, the engine suddenly and unprompted revved excessively, sounding as though the accelerator pedal was floored. The vehicle forcefully lunged forward against braking pressure into a cement wall, causing front-end damage to the vehicle. Cruise control was completely disabled and no check engine light or warning indicators illuminated on the dashboard. At no time did I feel like I had control over the car. I sustained some contusions. No one was in the vicinity at the time; however, other cars and/or people could have been struck. The vehicle has yet to be examined by anyone although I am in the process of arranging for an autobody repair shop. Prior to this, the car was in its usual state of health without any issues.

Filed Aug 10, 2026 · Driver assistance · FL · crash

2025 JEEP GRAND CHEROKEE – UNINTENDED ACCELERATION, ADAPTIVE CRUISE CONTROL AND UNEXPECTED BRAKING I am reporting multiple intermittent safety-related problems with my 2025 Jeep Grand Cherokee, VIN [XXX], involving Adaptive Cruise Control (ACC), unexpected acceleration, and unexpected braking. While driving on the highway with ACC activated, the vehicle has on multiple occasions behaved unpredictably. When another vehicle enters or cuts into my lane, my Grand Cherokee does not always reduce speed as expected. On some occasions, the vehicle has accelerated even though another vehicle was directly ahead or entering my path. One of these incidents occurred before a collision. I was traveling in my lane with the driver-assistance/ACC system activated when another vehicle crossed into my path. My Jeep continued traveling forward and did not automatically slow or brake sufficiently in response to the vehicle entering my path. When I manually applied the brakes, there was not enough distance remaining to avoid the collision. I have also experienced approximately two incidents on the highway involving unexpected aggressive braking. When I manually touched the brake pedal, the instrument cluster displayed a red warning and the vehicle suddenly applied extremely hard braking. The braking response was substantially more aggressive than the brake input I was providing. In addition, on one occasion while leaving my office at low speed, the vehicle unexpectedly accelerated without my intentionally commanding the acceleration. The Adaptive Cruise Control and driver-assistance system were OFF at the time. This incident is particularly concerning because it occurred independently of ACC operation. The vehicle has been taken to an authorized Jeep dealership and I reported all of these conditions. The dealership advised me that because the problems are intermittent, if they cannot duplicate the condition they cannot determine what repair to perform. They proposed ext INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION

Filed Aug 4, 2026 · Fuel system, Transmission · CT

Electronic Throttle Control warning light comes on upon starting vehicle while extended crank occurs. When starting car, the push to start feature will not turn over and continuously cranks multiple times. Issue is intermittent- never know when it will happen which makes it difficult to replicate at service center. Took car into 2 mechanics on separate occasions and finally to the Jeep dealership for service. Because issue couldn’t be duplicated- nothing was done. However, recently while driving, same extended crank pattern noise and unstable/rough propulsion occurred while driving on the highway. Same Electronic throttle control warning light came on along with the check engine light. Also cruise control and the auto On Off feature became disabled. I scheduled service with my mechanic as soon as possible and they found the stored code was related to Technical Service Bulletin 2014-004-25 REV.B. This bulletin lists the symptoms I described yet the dealership did not perform the fuel pressure Test and Replace Fuel Pressure Regulator. I called the dealership to schedule warranty service for this TBS and they gave me difficulty acknowledging the TSB was issued for my make/model/year and scheduling a service appt. I spent the last few hours reading all of the complaints on the federal safety agency for 2021 Jeep Grand Cherokee and it is alarming how many of the complaint are for this specific issue. It is dangerous for anyone on the road to be driving in a vehicle you can’t rely on to propel you forward when you press the gas or stall due to faulty fuel pressure regulator amid traffic. An investigation should be done. Furthermore, in reviewing other recalls, I found this is a recurrent issue for Jeep. It appears they’ve been various safety recalls issued for this in the past for vehicles made from 2011-2020. How they haven’t addressed it in new models is appalling. For owners of the vehicle, it’s difficult to have any leverage with dealership since it is not easy to replicate on demand.

Filed Jun 10, 2026 · Driver assistance, Electrical · IL

The Cruise control pacing/follow option does not slow down/break and will rear end/strike any vehicle. The auto breaking does not work. The touch screen constantly cycles randomly changing map directions, radio stations, heat and air conditioning, seat heating and cooling. Puts driver at risk due to constant changes and alert sounds.

Filed May 16, 2026 · Electrical, Engine · PA

I am submitting this complaint regarding a serious safety-related failure involving my 2022 Jeep Grand Cherokee 4xe. I purchased the vehicle used with approximately 15,000 miles and was informed the previous owners leased it and rarely used it. At approximately 40,000 miles, despite completing all recalls in a timely manner, the vehicle experienced the exact type of hybrid system failure a recall was intended to prevent. The issue began when the hybrid system failed and left the vehicle unsafe to operate. Upon startup, only accessory power activated and the engine would not start. A full power cycle was required before the vehicle started. Immediately afterward, warnings appeared including "Service Hybrid System," "Service Charging System," "EAB Unavailable," "Lane Keep Assist Unavailable," "Pedestrian Braking Unavailable," and "Adaptive Cruise Control Unavailable." The check engine light illuminated and all hybrid modes became unavailable. Shifting became erratic and harsh. Downshifts from 2nd to 1st felt like sudden braking and caused me to hit my head on the steering wheel. During acceleration, the transmission slipped and shifted unpredictably. Fuel economy dropped from approximately 22 MPG in E-Save mode to approximately 10 MPG at highway speeds. Diagnostic code P1E1D was retrieved and I was advised the vehicle was unsafe to drive. While driving to the dealership, the vehicle shut down twice while in motion. During both shutdowns, power steering and braking assistance were lost, posing an extreme risk to myself and others while moving the vehicle off a busy three-lane roadway. Dealership diagnostics determined one or both high-voltage battery systems failed and required replacement. Despite completed recalls, the issue still occurred. Parts were backordered over a month. I believe this failure and recall effectiveness warrant investigation due to the serious safety risks created by loss of propulsion, steering, and braking assistance while driving.

Filed Apr 3, 2026 · Acceleration, Driver assistance · 4,800 miles · WV

The contact owns a 2025 Jeep Grand Cherokee. The contact stated that while operating the vehicle, the message "Auto Emergency Braking Limited - Service Required" was displayed with an audible chime. Additionally, the cruise control became inoperable. The vehicle was taken to the local dealer, who reprogrammed the CADM. After retrieving the vehicle, the failure reoccurred. The vehicle was not repaired. The manufacturer was not yet contacted. The failure mileage was 4,800.

Filed Mar 22, 2026 · Driver assistance · SC

Subject: Forward Collision Warning Plus and Advanced Brake Assist Failure – 2025 Jeep Grand Cherokee Laredo I am reporting a safety defect involving the Full-Speed Forward Collision Warning Plus and Advanced Brake Assist systems on my 2025 Jeep Grand Cherokee Laredo. The vehicle does not provide forward collision warnings or apply assistive braking in situations where a collision is imminent. On multiple occasions, a vehicle in front of me slowed or stopped while turning into a driveway or parking lot. My Jeep provided no visual alert, no audible warning, and no braking assistance. I had to manually brake to avoid rear‑ending the other vehicles. I brought the vehicle to the dealership. During testing, the system could not be activated on my Jeep. We then tested another Jeep of the same model and year; its system also failed to activate until we were within approximately three feet of the vehicle ahead. My Jeep never activated at any distance. The dealership stated that because Adaptive Cruise Control slows the vehicle when active, the collision warning and brake assist systems must also be functioning. This explanation is inconsistent with how these systems are designed to operate, and it does not address the failure of the Forward Collision Warning Plus system to activate in real‑world or controlled conditions. This appears to be a systemic failure of the collision‑avoidance technology on this model, creating a significant risk of rear‑end collisions.

Filed Mar 9, 2026 · Driver assistance, Electrical · 8,000 miles · PA

The contact leased a 2024 Jeep Grand Cherokee. The contact stated that while driving at various speeds, the Lane Departure and cruise control mode unexpectedly deactivated. The vehicle was taken to the dealer, where the infotainment system was reset, and the vehicle was temporarily operated as needed. The failure recurred intermittently while driving, requiring the driver to pull over to the side of the road to reset the infotainment system. Additionally, the contact received notification of the federal safety agency Campaign Number: 25V741000 (Electrical System); and the vehicle was taken to the dealer for the recall repair; however, the high voltage battery was not yet available, and the vehicle remained with the dealer for 50 days. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The vehicle was not repaired. The manufacturer was made aware of the issue. The failure mileage was approximately 8,000.

Filed Jan 27, 2026 · IN

Traveling 66 miles an hour, using cruise control, car shutdown completely lost power. Went from 60 to 0 very fast. Stuck on the side of the expressway. early morning freeway. Little to know traffic. Was able to maneuver thru 3 lanes to make it to the shoulder before going 0. Message displayed to park vehicle, wait until vehicle can restart.