VEHICLE INDICATED THAT PASSENGER FRONT DOOR WAS AJAR, THIS AFTER TEN MINUTES OF DRIVING. DOOR WAS IN FACT NOT AJAR. PASSENGER OPENED AND CLOSED DOOR JUST TO CHECK, DOOR THEN WOULD NO LONGER FULLY CLOSE. PULLED MANUAL LOCK TO SEE IF IT WAS STUCK, WHOLE PIECE CAME OUT. SMOKE STARTED POURING OUT OF HOLE AND DOOR METAL WAS VERY HOT TO THE TOUCH. REMOVED DOOR PANEL TO PUT OUT FIRE INSIDE. LOCK ACTUATOR MOTOR MELTED DOWN AND PARTS WERE SMOLDERING. DURING THIS PROCESS THE ELECTRONIC BACK GLASS POPPED OPEN AS WELL AND WILL NO LONGER LATCH EITHER. CHRYSLER RECALLED SOME 2004 LIBERTY'S FOR THESE MOTORS OVERHEATING AND SEIZING, WAS INFORMED THAT THIS VEHICLE WAS NOT INCLUDED AND THAT WE SHOULD HAVE 'MAINTAINED THE WIRING IN THE DOOR'. THIS VEHICLE IS METICULOUSLY MAINTAINED! *TR