Electric door locks

Door locks lock by themselves. I am always locking keys in car. I had too much to carry so made second trip?to car & the doors were locked without running, keys in ignition.

The ‘preliminary testing’ suggested above is what a repair facility will perform to determine if problem exists within the vehicles electronics or it is an operators error. Testing may take a couple of days - be prepared to leave vehicle at repair facility long enough for testing to be completed / confirmed. Good luck!