Once every few weeks my alarm would go off for no reason and sometimes the parking lights would come on 5/10 mins after I locked it. Then today I when I unlocked it and opened the door the alarm went off and the engine disabled message & alarm fault message flashed. I left it for an hour came back and it worked fine, now having tried to unluck the truck(manually) only the drivers door unlocks and there seems to be no alarm as the LED doesn't flash and it's dead, nothing happens when I try to start it. Mech. thinks its the drivers door lock acctuator? Any thoughts woud be appreciated.