I have a 2014 Cooper S. I let the car running while I ran into a store for a moment with the keys in my pocket. When I came out, the engine had shut down and refused to start again. Everything turns on but the engine will not turn on. Someone thought it was the security system locked on and suggested using the physical key to unlock the car for 30 seconds but that didn't do anything. Has anyone else had this problem, and if so, how did you fix it?