Engine shuts off when car is in drive or reverse while vehicle is in motion and displays message of "start/stop system deactivated. please restart engine manually. the yellow check engine light then appears. and the vehicle rolls away unless brakes are applied. this happened multiple times - 10 times in my car, 3 in my first loaner car and 6 in my second loaner car. the vehicle is usually in motion right after the engine is started and the car is driven for about 500 feet, after the car is going 3-5 mph the engine shuts off and the car will roll away. on other occasions when the car is stopped in traffic the engine shuts off and will roll away. each time you must put the vehicle in park and restart the engine. on another occasion a pre sense malfunction occurred where the car slammed on its brakes in traffic and almost caused a rear end collision. the dealerships have no answers for the first part, but claim a bug on the sensors caused the car to slam on its brakes.