FRONT PASSENGER SEAT BELT OCCASIONALLY LOCKS UP DURING NORMAL DRIVING. THIS FORCES THE PASSENGER TO UNDO SEAT BELT, FULLY RETRACT THE BELT TO ITS NORMAL "UNUSED" POSITION BEFORE PUTTING IT BACK ON. OTHER TIMES, THE SAME BELT WILL NOT LOCK. FRONT PASSENGER WILL LUNGE FORWARD DURING NORMAL TO HARD BRAKING. NO PATTERN TO FAILURE, BUT ONE OR THE OTHER OCCURS AT LEAST 50% OF THE TIME THE FRONT PASSENGER BELT IS USED. *NLM