2014 Jeep Grand Cherokee: false forward collision warnings

Filed Sep 15, 2025 · Driver assistance · WA · crash · 1 injury

The anti collision avoidance systems did not engage. Instead it seemed the vehicle sped up. It did not engage to stop a collision, I was at almost a stop. Vehicle seemed to speed up. Anti-collision systems did not engage at all. This system worked previously. It did not brake automatically nor avoid a collision. It caused an accident & there were minor injuries & totaling 2 vehicles mine (2014 Jeep Grand Cherokee Overland) & the other party to accidents truck.

Filed Dec 23, 2019 · Transmission · 35,000 miles · AZ

Defective transfer case gear motor and transfer case control module. This causes vehicle lurching while at slow speeds I.e. In a parking lot in drive or reverse driving straight but worse when turning. Also caused loss of ABS, traction control and forward collision warning systems.

Filed Dec 10, 2019 · Brakes · 69,000 miles · CT

Vehicle equipped with forward collision warning (fcw) has inadvertently applied the brakes, slowing the vehicle down, with no vehicle or obstruction ahead. This has occurred multiple times and more frequently sounds the I-brake alert with no vehicle or obstructions ahead. The risk potential to lose control or be rear ended is high. This has occurred while driving at 30mph on a street and 60mph while on a highway. The jeep dealer has been unable to determine any causes or fixes throughout the last year. The safe noted 12/2/19 is the last time the braking has occurred but has been occurring since 2018.

Filed Oct 14, 2019 · Brakes · CA

My 2014 jeep grand cherokee overland is slamming on breaks and blinks a red light saying brake with nothing on the road! This is the second camera/ collision detection system it has occurred on, dealership can't find anything wrong please help before this kills my family! I found that there was already a big investigation on this in 2016 but didn't involve a recall, I am worried for my safety. Jeep wants me to drive the car and track it with a device that records my driving patterns. I don't see how this is going to help them identify the issues with their fcw ( forward collision warning system) https://apnews.com/d60d7185ec0e4b53a666e32b77b8039a this article above describes exactly what I am having occur.

Filed Oct 4, 2017 · Acceleration, Driver assistance · 20 miles · FL

While driving on the highway with no vehicles or obstacles in front of me, the break assist collision avoidance went off indicating an imminent collision and stopping the car. Perhaps related to the same issue, a few minutes after this incident the computer also displayed an error message stating that the automatic windshield wipers were not working properly

Filed Apr 19, 2017 · Acceleration, Brakes · 20,000 miles · NJ

Multiple problems with the forward collision warning (fcw) and adaptive cruise control (acc) systems 1) system will issue false brake warnings (and apply brakes if enabled) on clear straight roads with no other cars or obstructions. 2) system will disable itself at random intervals disable itself for a period of time (10-20 minutes). Only notification is brief "fcw/acc system disabled" notification in gauge cluster - no audio warning that important safety system disabled itself. 3) when using acc, when vehicle resumes set speed after autonomous braking, vehicle will accelerate into back of next vehicle ahead - have to manually intervene and apply brakes to prevent collision. Note that this vehicle uses a bosch lrr3 radar sensor system for the fcw and acc features. Vehicle has been into jeep dealers for service for this issue five times, and even after opening star case with jeep/chrysler fca, still no fix for this serious safety issue.

Filed Feb 17, 2017 · Brakes · 21,000 miles · CA

I filed case # 10854550 on 4/9/16 following an active braking system malfunction where my vehicle braked on its own with no vehicles or other obstacles in my path on 3/31/16. I filed case #10948159 following an incident on 1/9/17 where the collision warning system went off and the active breaking feature engaged, despite no risk of collision. Further, the active breaking feature was turned off in my vehicle settings. The dealership service department has reported to me that nothing is wrong with my vehicle, following an inspection. But yet again, on january 31, 2017, my collision warning system went off and the active breaking feature engaged, despite no risk of collision. The feature has remained disabled per my vehicle settings. In this instance I was driving in stop and go traffic with my cousin and my almost 19 month old son in the car. Out of nowhere, the systems listed above engaged. I really do not know what to do. I feel at risk, and worse, I feel I am endangering my child by driving in my car. Short of selling it and passing this risk on to someone else, I am at a loss in terms of what can be done.

Filed Jan 28, 2017 · Brakes · 20,450 miles · CA

I filed case # 10854550 on 4/9/16 following an active braking system malfunction where my vehicle braked on its own with no vehicles or other obstacles in my path on 3/31/16. Following this incident, I went to the jeep dealership and spoke with a service advisor who checked for error codes (there were none) and explained that this model and year of jeep had an issue with the active braking feature, stating that keeping the camera clean can help, and he proceeded to clean my camera. But because this was a known issue, I did not leave my vehicle for further inspection. At the time of this incident, my not yet nine month old son was in the car with me, so to avoid any safety concerns surrounding this braking feature, I turned the active braking setting off in my car to disable the feature. The feature has remained off since that time. However on 1/9/17 I was stopped in traffic at a red signal. The light changed to green so I proceeded to move forward. The vehicle in front of me hesitated in moving forward, so I took my foot off the gas. Before I had the chance to use the brake, the collision warning system went off and the active breaking feature engaged. I was shocked, to say the least. I immediately pulled over and checked my vehicle settings. The feature was supposedly still turned off. At this point I was extremely worried for the safety of my now 1.5 year old son who was once again with me, so I took my vehicle to the jeep dealership for inspection. The dealership was unable to recreate the issue, and therefore nothing could be done to address it. I had previously come to terms with the fact that I would not be able to use one of the very useful safety features of my vehicle due to its known malfunction, however now I am at a loss as I am clearly unable to disable the feature and have any confidence in knowing that it will not engage anyway.

Filed Dec 14, 2016 · Acceleration, Brakes · 60,000 miles · PA · crash

Adaptive cruise control and collision avoidance did not work properly, and resulted in a collision. I was driving on a highway, relying on the adaptive cruise control and the automatic braking, a feature of collision avoidance. There was a slow down in traffic, and although the system slowed down and applied brake, it did so too late to stop car. As I got too close, I applied steady pressure on the brake, but I still hit the car in front of me, who then hit the car in front of them. No significant damage to either of the other cars, and mine has minor cosmetic damage, and the adaptive cruise control is now not working properly. Could have been significantly worse. Makes me really question the potential for self-driving cars.

Filed Aug 31, 2016 · Brakes · 44,000 miles · VA

Twice now since I purchased this vehicle (in april of this year) I have experienced incidents of what appear to be random proximity collision alerts (indicated by brake!! On the console) followed by a sudden automatic braking, for which I discerned no pending threats in the line of travel. This action resulted in an unexpected and very unnerving sudden drop in vehicle speed in traffic; in the latter case I was almost rear-ended as a result of the extremely harsh braking action

Filed Jul 21, 2016 · Brakes, Lights · 600 miles · LA

Tl* the contact owns a 2014 jeep grand cherokee. While driving 45 MPH, the vehicle independently came to an abrupt stop. The forward collision avoidance system was turned off at the time. The failure recurred three times. On several occasions, the headlights, tail lights, and hazard lights failed to operate. The technician was unable to duplicate the failure. The manufacturer was notified of the failure. The approximate failure mileage was 600.

Filed Jun 23, 2016 · Brakes · 10,000 miles · VA

On two occasions, two weeks apart, the active braking feature functioned without obvious external cause. In both cases, the active braking system caused the antilock braking system (ABS) to activate, causing the vehicle to stop abruptly. The following information applies to both instances: 1. Forward collision warning system (fcw) is on. 2.fcw is set to near 3.active braking feature set to on. 4.vehicle speed approximately 30 MPH 5.asphalt four lane road without divider 6.daylight, sunny, temperature about 80 degrees f 7.no vehicles in front or on either side. 8.no vehicles approaching. 9.no obstacles or perturbations on road surface. Second occasion occurred after dealer had installed latest software updates for all components. Dealer has inspected and driven the vehicle. No defect codes were found. Dealer could not duplicate event.