WHILE IN MOTION SEAT BELT WOULD COME UNDONE OR WOULDN'T UNLOCK FROM LOCK IN ORDER TO USE. BRAKES WOULD SLIP. MY BOYFRIEND WAS KILLED IN AN ACCIDENT BECAUSE THE SEAT BELT MALFUNCTIONED WHICH THEN CAUSED THE AIRBAGS TO MALFUNCTION AND THE BRAKES STUCK SO HE WASN'T ABLE TO SLOW DOWN SUFFICIENTLY.