2013 Lexus GS 450h Owners Manual - Page 13

1-1. For safe use Seat belt pretensioners (front and outboard rear seats) The pretensioner helps the seat belt to quickly restrain the occupant by retracting the seat belt when the vehicle is subjected to certain types of severe frontal collision. The front seat pretensioners also activate when the vehicle is subjected to certain types of severe side collision. The pretensioner does not activate in the event of a minor frontal impact, a minor side impact, a rear impact or a vehicle rollover. Pre-collision seat belts (front seats of vehicles with pre-collision system) If the pre-collision sensor detects that a collision is unavoidable, the precollision system will retract the seat belt before the collision occurs. (→P. 296)