Car Accelerates On Its Own problems of the 2015 Jeep Grand Cherokee

The check engine light came on and the vehicle's electronic throttle control systems was inoperable. Upon stopping and releasing the brake the vehicle lunges forward accelerating suddenly to 20 miles per hour. When place in reverse the vehicle and releasing the brake the vehicle lunges as well. Additionally, when the check engine light and electronic throttle control indicator light is on, after lunging, the vehicle will not allow you to accelerate beyond 30 to 40 mph after the initial lunge. I have had two incidents that have damaged my car. It only happens when the vehicle is in drive or reverse making it unsafe to operate.

The contact owns a 2015 Jeep Grand Cherokee. While driving 35 mph, the vehicle independently engaged the sport feature and revved rapidly. The vehicle accelerated rapidly as if it were in overdrive. The failure recurred intermittently. The vehicle was taken to the dealer where it was diagnosed, but the cause of the failure was not found. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 70.