Rear Seat Belt Pre-Tensioner
The rear seat belt pre-tensioner system is installed for both the left rear and right rear seats. It operates simultaneously with the SRS air bag system in the event of a frontal collision with an impact exceeding a specified level.
When a frontal collision with an impact exceeding a specified level occurs, seat belt slack resulting from clothing or other factors is immediately taken up by the shoulder belt pre-tensioner (1). Vehicle passengers are securely restrained. When passengers in a vehicle are thrown forward in a collision and the restraining force of the seat belt exceeds a specified level, the load limiter permits the specified extension of the seat belt by the twisting of the ELR shaft and a relaxation of the chest-area seat belt web tension while maintaining force.