2021 Jeep Grand Cherokee: false forward collision warnings

Filed Sep 9, 2024 · Brakes, Driver assistance · WA

For my 2021 Jeep Grand Cherokee, the Antilock braking system, Hydraulic control unit has failed. It is currently being repaired by the dealership, and I will request the old part so that it is available for inspection. The failure of the ABS control unit, disabled the electronic stability control, the forward collision warning system and the cruise control - and the issue appears to be directly equivalent to the current Stellantis recall for Ram 1500's of a similar year. The dealer was able to reproduce the error - and was inspected at a Jeep dealership.

Filed Mar 6, 2024 · Driver assistance · 17,000 miles · AZ

The contact owns a 2021 Jeep Grand Cherokee. The contact stated that while driving at an undisclosed speed, the Forward Collision Avoidance module was not working as needed. The contact stated that the warning light illuminated and remained illuminated without any vehicles being nearby. Additionally, the light remained illuminated and failed to deactivate. The vehicle was taken to the dealer where it was diagnosed with defective wiring and that the Forward Collision Avoidance module needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 17,000.

Filed Sep 25, 2023 · Brakes, Driver assistance · CA

On many occasions, warning lights come on for no reason. The dealer has "updated" software, but to no avail.. Collision warning, stop/start error, throttle body error and more. On the last event we were driving uphill, approx 25 mph, nobody in front of us, and the brakes slammed on with multiple errors showing.. the car then lurched forward with active breaking, stop start error, throttle body sensor all showing up and going away. This happened 4 times on the evening of Sep 15th. The errors and random and intermittent.. They replaced a "secondary" battery at one point, and that did nothing. They told us we needed to drive it for over 100 miles, to charge the battery, but it did not fix the stop/start or any other error. Now it is in the Cerritos dodge dealer and we have a formal complaint filed with Chrystler.. The dealer states they can't find any problems.. During most of the events, the errors and warning lights do not stay on longer than a few seconds. I have one picture I was able to take when the warning lights stayed on a little longer.

Filed Feb 23, 2023 · Electrical, Steering · NC

Car has had erratic electric steering at low speed when making turns. Weird noise from electric steering system. We drove 6 miles to a local park. Walked the trails then got back into this car. Started up. Warnings came up on screen. 1 Service Stability system, 2 service blind spot monitor system, 3 rear collision avoidance unavailable, 4 Blind spot monitoring system became inoperative. 5. Electric steering became extremely difficult to operate. We restarted car 2 times and all the above warnings came on each time. As it was Saturday Evening, we limped car home. Parked in Garage and I started it 2 hours later with all the above warnings. Left overnight and started Sunday afternoon 2/11/23, no warnings. Drove car to selling dealership, parked in line for repairs and it is still there. Dealership has finally gotten in an entire electric steering assembly, as this was the stored codes from 2/10/23, and they are supposed to be installing it tomorrow 2/24/2023. Failure of an electric steering unit on a car that has no physical connection between the steering wheel and the front tires is a chilling event that needs tobe investigated. Thankfully I did not wreck the car, but I parked it because of the malfunction, and on hindsight, I should have had it hauled to the Dealership instead of driving it there.

Filed Jun 7, 2022 · Driver assistance · CA

Forward collision warning system and auto emergency braking system non operative since vehicle was purchased from new. Have paper work from local dealership confirmation that systems are non operative but they can not fix and do not know why. Was told that this is an issue on all Jeep’s. Corporate has a case open but will not call me back and when I call them system states that I can leave a voicemail with my case worker but then hangs up with no options to speak to anyone.

Filed Oct 8, 2021 · Electrical · MD

Purchase vehicle brand new from dealer; a whistling noise is audible from the front driver window. A rattling noise is audible from the sunroof. An error msg is visible on the infotainment screen requiring service. The front collision warning engaged driving on a sharp curve with no vehicle in view causing an unnecessary and dangerous break event. All issues, excluding the last reported to fca due to the amount of times new vehicle has been out of commission (30+ days) when purchased brand new.