2015 Jeep Grand Cherokee brakes problems

Tl* the contact owns a 2015 jeep grand cherokee. After switching to the park position and exiting with the engine running, the vehicle suddenly drove forward and struck a second vehicle. The contact sustained an injured right arm. Medical attention was not required. The vehicle was taken to the dealer who was unable to duplicate the failure. Also, while driving at various speeds, the collision avoidance system randomly activated and caused the braking system to abruptly stop the vehicle.

Tl* the contact owns a 2015 jeep grand cherokee. While driving 65 MPH, the front alarm braking sensor illuminated and the vehicle came to a complete stop. The failure recurred five times. The vehicle was taken to a dealer where it was diagnosed, but the failure could not be duplicated. The manufacturer was not notified of the failure. The approximate failure mileage was 15,000.