2021 Jeep Grand Cherokee L driver assistance problems

Filed Oct 12, 2026 · Driver assistance · PA

I own a 2021 Jeep Grand Cherokee L covered under a Mopar Maximum Care extended warranty. My vehicle frequently displays the following safety-related warnings: - Auto Emergency Braking (AEB) Limited Functionality – Service Required - Blind Spot Alert Unavailable – Service Required - Active Lane Management (ALM) Unavailable – Service Required These warnings occur randomly, sometimes appearing and disappearing repeatedly within seconds. Because the malfunctions are intermittent and unpredictable, they are difficult to reproduce during a scheduled inspection. I have documented multiple incidents through photographs and videos. I brought the vehicle to an authorized Jeep dealership, where technicians conducted an approximately 50-mile test drive but could not reproduce the warnings. Despite reviewing my documented evidence, both the service department and service manager stated that no further action could be taken unless the warnings appeared during their inspection. This response is particularly concerning because the warnings involve critical safety systems, including automatic emergency braking, blind spot monitoring, and lane management. Their intermittent unavailability raises serious concerns about vehicle safety. The dealership's position effectively shifts the burden of an unpredictable safety-related malfunction onto the vehicle owner. While requiring the issue to be reproduced during inspection may be convenient for the dealership, it leaves me without a practical means of obtaining a repair. I cannot repeatedly bring my vehicle in whenever a warning briefly appears. As a result, despite having comprehensive extended warranty coverage, I am left driving a vehicle with recurring, unresolved safety-system malfunctions and no meaningful path toward diagnosis or repair.

Filed Oct 8, 2026 · Driver assistance, Transmission · MD

On or about 10/7/26, my vehicle suffered a simultaneous, unprompted failure of multiple safety and control systems. I believe this is due to a background manufacturer-initiated Over-the-Air (OTA) software update and is a well known issue on the Jeep Grand Cherrokee L . The exact date the update was pushed is unknown, as it occurred automatically via the telematics system. The symptoms appeared suddenly: the Forward Collision Warning and Pedestrian Emergency Braking (PEB) systems completely deactivated, leaving the 'FCW OFF' warning light permanently illuminated on the dashboard. Concurrently, the steering wheel paddle shifters ceased to function ('Paddle Shifting Disabled'), and the vehicle's digital display automatically reset its units of measurement. This constitutes a severe safety hazard. The vehicle’s automated crash mitigation features are completely disabled, depriving the driver of critical safety protections designed to prevent front-end collisions. Furthermore, the loss of transmission control via the paddle shifters restricts the driver's ability to manually downshift and use engine braking, which is essential for safely managing vehicle speed on steep declines or slippery road conditions.

Filed Aug 14, 2026 · Driver assistance, Electrical · AR

A vehicle was purchased at McLarty Daniel Chrysler Bentonville, AR. The sales department had a third party install a non-oem windshield. Dealer attempted repairs, but the records show discrepancies of statements and record. The dealer ignored the instructions to recalibrate the windshield, though the receipt stated “elevated risk of collision” if not calibrated. The owner had on going issues that service should have connected to the windshield and calibration. The windshield of this vehicle has immense safety features that were ignored. The liability to willfully hand over the keys of a known unsafe vehicle is high. The dealership sent a repair request to warranty, only to be denied for “faulty or negligent install” then the service department said “long story short sales will cover the repair” after requesting formal warranty communications did the owner become aware on 7/30/26 and start the process of correction.

Filed Jun 12, 2026 · Brakes, Driver assistance · GA · crash

This is the second time I got into an accident and the (ADAS) made me crash.. I was far enough to brake safely but the system keeps me going forward..it drags me as if there is ice on the ground..if it was off my car would not have been in any of these accidents..this feature is not safe..I feel like my life is in danger when it is on

Filed May 14, 2026 · Driver assistance · TX

When a car in front of me is slowing down while the adaptive crusie control is on and I have the distance set to 3 or 4 lengths, the farthest one available, and the adaptive cruise control is set, the car will start slwoing down like the cars ahead of me and if I switch lanes to go around of the car that is slowing down and there is another car in front of me of the lane I move into that adaptive crusie control acts as if there is no car in front of me in the lane and will begin to accelerate until I engage the brake. So for example I'm traveling in the far right lane of a four lane road, two going north and two going south. I have my adaptive crusie control on and set to 50 MPH and the distance set to 4 car lengths (max) and then the car in front of me starts to slw down. The adaptive crusie control will adjust and start to slow down as well. So I decide to get into the next lane over to my left, where there also happens to be another car 1 or 2 car lengths in front of me, the adaptive crusie control will not detect that car after lane change and will begin to accelerate back up to 50 MPH when it should still be slowing down to avoid a collision. This has happened multiple times.

Filed May 4, 2026 · Driver assistance, Electrical · PA

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.

Filed Jan 15, 2026 · Driver assistance, Electrical · OK

I experienced electrical issues that resulted in loss of steering and difficulty turning my 2021 Jeep Cherokee Laredo. The steering became very hard to turn, and warning lights were present. This created a safety concern because the vehicle was difficult to control. I took the vehicle to an authorized Jeep dealership in Midwest City, Oklahoma. The dealership diagnosed the issue as a fuse array and attempted a repair. The vehicle remained at the dealership for approximately five days. After the repair attempt, I was informed that the fuse blew and that the vehicle now requires replacement of the power steering assembly. I was unable to afford the additional repair. The vehicle was returned to me with the original steering problem unresolved and remains difficult or unsafe to operate. I am reporting this because the vehicle experienced loss of steering, a serious safety issue, and was returned unrepaired after a failed diagnosis and repair attempt. I am concerned about a potential safety defect involving the steering and electrical system.

Filed Oct 21, 2025 · Driver assistance, Electrical · FL

Randomly, and without warning, the instruments, gauges, and displays will switch to Italian along with cluster and radio display settings reverting to default settings, auto door locks and paddle shifter becomes inoperative (with no menu to enable), pedestrian emergency brake (peb) lamp or forward collision warning (fcw) lamp turns on with no way to disable, units of measurement including speed, temperature, etc. change to metric and many other random settings change as well. ***This is clearly a dangerous situation because of all the functions and gauges that change, and the fact it is difficult if not impossible to recover from this due to the language of the setting menus, and the complexity of discovering and navigating through all these changes. The dealer charge me $300 diagnostic fee before resetting the software. Time goes by and it happens again. Dealer says there is nothing they can do and to wait for a software update from Stellantis, but none has come and it has been over a year. When this happens, I can change "some" of the settings back but some items cannot be reset like the FCA off lamp and paddle shifters. Back to the dealer I go for another $300 charge. Here is an example Jeep forum discussion, indicating many if not all vehicles are affected: https://www.jeepgarage.org/threads/forward-collision-warning-off-light-is-stuck-on.250301/#replies From personal experience, all of these issues started several years ago with an over the air software. This is a well known and widespread problem, and there is even a DOT Bulletin on the issue: dot.report Bulletins Because this is dangerous (for settings/gauges/units to no longer be useful while driving), and it occurs randomly, I strongly believe this issue should be a manufacturer recall. I am available for any needs."

Filed Aug 7, 2025 · Driver assistance, Electrical · FM

Randomly, and without warning, the instruments, gauges, and displays will switch into a language I do not speak or understand (Italian). Coinciding with the switch to Italian language, cluster and radio display settings revert back to default settings, auto door locks and paddle shifter becomes inoperative (with no menu to enable), pedestrian emergency brake (peb) lamp or forward collision warning (fcw) lamp turns on with no way to disable, units of measurement including speed, temperature, etc. all change, and many other random settings change as well. ***This is clearly a dangerous situation because of all the functions and gauges that change, and the fact it is difficult if not impossible to recover from this due to the language of the setting menus, and the complexity of discovering and navigating through all these changes. I have taken it to the dealer twice, and they say there is nothing they can do and to wait for a possible software update, but none has come and it has been over a year. When this happens, even if one is able to wade through all the settings menus and change setting back, some items cannot be reset (like the FCA off lamp). According to various Jeep owner forums, some dealers have been able to reset something and temporarily correct the issue, but they charge for this service, and the issue returns randomly again. Here is an example forum discussion, indicating many if not all vehicles are affected: [XXX] Many people on the forum believe this issue did not start until a software update a year or so ago. This is a well known and widespread problem, and there is even a DOT Bulletin on the issue: dot.report Bulletins Because this is dangerous (for settings/gauges/units to no longer be useful while driving), and it occurs randomly, I strongly believe this issue should be a manufacturer recall. I am available for any needs. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 6, 2025 · Driver assistance, Transmission · 93,000 miles · SC

The contact owns a 2021 Jeep Grand Cherokee L. The contact stated while driving 70 MPH on an interstate and depressing the brake pedal to avoid a crash, the automatic emergency braking system suddenly engaged, and the vehicle experienced a drivetrain failure. The contact was able to pull over to the side of the road. There was no warning light illuminated. The vehicle was towed to the local dealer, where it was diagnosed that the drive shaft, the transfer case, and the drivetrain control module had failed and needed to be replaced. The drive shaft was replaced, but additional repairs were needed. The vehicle was not repaired. The manufacturer was notified of the failure, but the case was closed, and the contact was referred to the dealer for assistance. The failure mileage was approximately 93,000.