HAD JUST PARKED VEHICLE AND WALKED AWAY, AND ANOTHER INDIVIDUAL INFORMED OWNER VEHICLE WAS ON FIRE. PASSENGER HAD POPPED HOOD AND HOSED DOWN INSIDE, AND PUT FLAMES OUT. FIRE DEPARTMENT WAS CALLED. NO INDICATION OF CAUSE. VEHICLE TOWED TO DEALERSHIP. MECHANIC INDICATED WIRING HARNESS WAS LIKELY CAUSE.*AK