Supplemental Inflatable Restraint (Sir) System
WARNING: This page is about a different car, the 2000 Buick Park Avenue. However, it is still accessible from the selected car via links, so may be relevant.
Supplemental Inflatable Restraint (SIR) system is designed to supplement protection provided by driver and passenger-side seat belts. A frontal crash of sufficient force up to 30 degrees off center line of vehicle will deploy driver and passenger-side air bags. A side crash of sufficient force will cause side impact air bags to deploy. Steering column and knee bolsters below instrument panel also absorb crash energy.
SIR system consists of Sensing and Diagnostic Module (SDM), driver and passenger-frontal air bag modules, front seat mounted side impact air bag modules, side impact sensors, SIR coil assembly and AIR BAG warning light in instrument cluster.