2021 Chrysler Pacifica: false forward collision warnings

Filed Mar 29, 2026 · Electrical, Engine · MI

This is an intermittent issue that has been happening for a while now and the car was sent to the dealership twice but the issue still persists. The engine would shuts down or partially loses torque all of a sudden and the steering becomes very stiff. At the same time you would see all kinds of alarms, error messages, and check lights on the dashboard. I would then have to pull over to the side of the road, turn off the car, then try to start it back up. Usually after several attempts (one time that took nearly 30 minutes), the car works properly again with no error messages but sometimes I'd still have some persistent check lights on the dashboard. Error messages and check lights that I see include the following: -Service Electronic Stability Control -Autopark Engaged -Shifter Autocorrect Active -Park Brake Temporarily Unavailable -AWD System Temporarily Unavailable -Automatic Emergency Braking off check light -Forward Collision Warning off check light -Check Engine light The dealership has been unable to properly diagnose and fix this issue so far. On the first visit, they replaced the main battery, auxiliary battery, some wire harnesses that I was told had some corrosion, and the adaptive cruise control module. On the second visit, they replaced the CAN Bus star connector. The same issue still persists after replacing all above components.

Filed Aug 20, 2024 · Driver assistance · CO

The backup camera and rear collision warning randomly stops working. I put the car in reverse and there are just blank lines on the screen. Somethimes the screen resumes a normal display when I shift out of reverse, and sometimes the screen just stops working.

Filed Jul 24, 2023 · Driver assistance · TX

This vehicle programming includes forward and rear collision warning with both audible and dashboard diagram lights showing which sensors are approaching another object. Unfortunately, in practice, the alarms alert you to something in front or behind you regardless of if you are in gear to move forwards or backwards. This means that everytime you get in gear to leave your parking spot the alarm is dinging because of whatever you pulled up to in your parking spot making drivers have to tune out the audible alarm which is irrelevant and look down at the dash to see where the alerting object is in relation to the vehicle. Reports have been filed with Chrysler but no action has been taken to improve this poor design despite years of it being in effect.

Filed Jan 25, 2023 · Driver assistance, Electrical · MI

The first incident, the vehicle lost power driving down the freeway at 75 miles per hour. That was only at 1,000 miles. Very scary!! Since then, I have had numerous electrical issues- too many to count. There has been front & side sensor collision warnings when nothing is even next to my car. The navigation has not worked the majority of time that I have owned the car. travel for work so I therefore have to look at my phone for directions- not ideal at all for safety. I had had a few instances of an extremely loud humming sound from the vehicle of unknown origin. I have had the control screen frozen & could not turn on heat in winter. I have most of these occurrences on video with my phone. I had sent a certified letter requesting arbitration. I have had no response from Chrysler. I had the car in 7 times to the dealership. They told me they cant fix it & dont waste my time returning until there is recall. I have these incidents in movie or video form. Your form will not allow me to upload these videos- only still pictures.

Filed Sep 15, 2022 · Brakes, Driver assistance · OH · crash

I was on the highway traveling at 60mph, with the adaptive cruise control on. The semi in front of me began to brake, I tapped off the cruise control and began braking. The semi came to a complete stop and I pushed my brake pedal to the floor to stop my vehicle. It did not stop. My Pinnacle has emergency braking and forward collision warning. My driver's instrument panel did not give a forward collision warning indication in a timely manner and my emergency braking did not stop my vehicle. At the time of the accident vehicle had less than 10,000 miles, dry weather conditions, and vehicle was used for leisure - in town driving. A month previously, I took my Pinnacle into the dealership because I didn't feel my brakes were working properly. They felt mushy, little resistance, and were making a noise. An inspection was performed by the dealership but were unable to detect a noise or visual issue. My safety was put at risk when a system I depended upon, that was advertised as, "Full speed forward collision warning with active braking assists you by providing both visual and audible warnings as well as applying emergency braking to help bring the vehicle to a full stop, if needed" (chrysler.com/pacifica/safey-security.html) failed. The brakes didn't engage properly to stop us before hitting the vehicle in front of us. The forward collision warning indication didn't happen in a timely manner, it was delayed causing us to lose precious seconds. If this had been a passenger vehicle in front of us we could have injured the occupants and we ourselves could have been gravely injured had we been traveling at a higher rate of speed. The problem has not been confirmed by a dealership, but was taken there prior to the incident less than a month before. I reported the problem to Chrysler the day of the accident. The vehicle is pending inspection by insurance and I have asked that the Electronic Data Recorder be removed and the information on it to be evaluated.