Jeep Grand Cherokee L Collision Avoidance Problems

Collision Avoidance complaints by model year

Which parts fail

• Warnings
  58
• Automatic emergency braking
  49
• Blind spot detection
  8
• Adaptive cruise control
  5
• Assist
  4
• Warning
  2
• Sensing system › Camera
  1

Components named in complaints (automatic emergency braking, adaptive cruise, lane keeping, backup camera).

Mileage when the problem started

What owners report

I am reporting a serious safety concern with my 2026 Jeep Grand Cherokee L. On multiple occasions, while driving and needing to slow down quickly behind another vehicle, the vehicle has emitted an audible warning, the engine has shut off while the vehicle was still moving, and the "D" drive indicator began flashing. When this occurs, the vehicle loses propulsion and I am only able to coast to a stop. I then have to place the vehicle in Park and restart the engine before the transmission will operate normally again. This has happened more than once and appears to occur during firm or rapid braking/deceleration. The braking was not an emergency stop or collision. The vehicle simply required quicker-than-normal deceleration due to traffic ahead. …

Two issues- 1. When pulling out into traffic the engine/gas did not catch and we slowly creeped out across lanes before the gas took. This almost caused us to become t-boned by a passing car. When the gas took the car lurched forward fast which could have been another accident. 2. When driving with adaptive cruise control the forward collision warning fault light and service adaptive cruise control light kept turning on and off with a service needed message on the heads up display. This flashed on and off repeatedly causing driver distraction and also limiting vehicle safety. …

Updates to the case#11679471. Since my initial report, Jeep arranged for an independent technician to retrieve and review the Event Data Recorder (EDR) from our vehicle. While Jeep has not shared the expert's conclusions with us, we obtained a copy of the raw EDR data file from the same tech (attached). Based on the EDR data: 1. The brake pedal was fully applied approximately 0.4 seconds before impact and remained depressed. 2. The vehicle's deceleration was only ~0.5 g, significantly below the expected ~0.8-1.0 g for dry asphalt conditions. 3. The ABS did not engage, indicating that hydraulic brake pressure was not reaching the level required to approach wheel lock. 4. The Automatic Emergency Braking (AEB) system was "On" but did not engage. 4. The Advanced Brake Assist (ABA) activated only ~0.3 seconds before impact, too late to reduce the stopping distance. 5. …

While driving on the Belt Parkway towards Coney Island in stop-and-go traffic at approximately 25-35 mph, the vehicle in front slowed and came to a stop. The distance to the vehicle ahead was more than two car lengths. The brake pedal was fully depressed, but the vehicle did not decelerate adequately to come to a complete stop. The driver's record is clear of any car accident All forward collision warning alerts were sounding, but the ABS and automatic emergency braking (AEB) did not activate. There was no tire screech or pulsation from the brakes. The vehicle slowed but continued to move forward, resulting in a low-speed frontal collision. After the collision, the vehicle refused to move until the engine had been turned off for several minutes. Airbags did not deploy. This incident happened on a brand-new vehicle with only 318 miles on the odometer. …

Active Lane Management disengages itself upon start up. Sometimes says needs servicing - message disappears upon car restarting. Car states key fob is not in vehicle when it is. Car has turned on, not shifted into gear, and then not been able to be turned off. Steering input from the system is sudden and does not consistently match actual road conditions Radio screen flashes/goes black/freezes Emergency Assisted Braking system activates without a clear obstacle present Braking events are abrupt and unexpected during normal driving Both systems operate intermittently and without a consistent pattern, making the behavior unreliable Dealership has been unsuccessful in reproducing any of these problems despite picture proof provided. Has happened on multiple occasions - beginning in September 2025. Jeep/Stellantis unwilling to resolve. …

My 2024 Jeep Grand Cherokee was having failures with the Active Lane Management and Park Sense features not turning on. A visit to the service department revealed failures with both the front and rear facing cameras. While waiting for parts, I was travelling on the highway with the Adaptive Cruise Control enabled. (Not thinking about a possible bad interaction with the ACC.) In slowed traffic, my Jeep decelerated approaching a car, then suddenly accelerated. I had to quickly press the brake before crashing into the car in front of me. The Adaptive Cruise Contol should have disabled with the other systems have trouble with the cameras. The failure mode should have been to brake or shutdown, not to accelerate.

Computer telling vehicle to do a sudden unintended acceleration. Forward collision warning system did not respond. Air bags didn't deploy. No diagnostics have been done. No warning lamps illuminated on dash. Vehicle currently is at repair shop. While pulling into a parking space at low rate of speed, vehicles engine reved up and vehicle took off, braking system did not respond unable to stop vehicle, hit a parking lot light post .

I am experiencing two serious issues with my Jeep that have raised significant safety concerns. First, the front passenger seat's lumbar bladder repeatedly inflates on its own, making the seat extremely uncomfortable and causing severe back pain for anyone sitting in it. I have been informed that this is a known issue affecting many Jeeps of this model. The dealership previously deflated the lumbar bladder under warranty, but now the problem has returned. I was told I must pay for the repair out of pocket because the previous deflation supposedly voided or disqualified the warranty coverage. I do not believe I should be responsible for paying to fix a recurring defect that was previously addressed under warranty. Second, the Electronic Brake System (EBS) warning light comes on randomly, and when it does, my vehicle unexpectedly slows down or comes to a stop. …

Related recalls (2)