2007 Saturn Aura Owner's Manual - Page 77

The side impact airbags are intended to inflate in moderate to severe side crashes. A side impact airbag will inflate if the crash severity is above the system's designed "threshold level." The threshold level can vary with specific vehicle design. Side impact airbags are not intended to inflate in frontal or near-frontal impacts, rollovers, or rear impacts. A side impact airbag is intended to deploy on the side of the vehicle that is struck, unless the passenger sensing system has turned off the passenger's seat-mounted side impact airbag. See Passenger Sensing System on page 80 for more information. In any particular crash, no one can say whether an airbag should have inflated simply because of the damage to a vehicle or because of what the repair costs were. For frontal airbags, inflation is determined by what the vehicle hits, the angle of the impact, and how quickly the vehicle slows down in frontal and near-frontal impacts. For side impact airbags, inflation is determined by the location and severity of the impact. What Makes an Airbag Inflate? In an impact of sufficient severity, the airbag sensing system detects that the vehicle is in a crash. The sensing system triggers a release of gas from the inflator, which inflates the airbag. The inflator, airbag and related hardware are all part of the airbag modules. Frontal airbag modules are located inside the steering wheel and the instrument panel. For vehicles with seat-mounted side impact airbags, there are also airbag modules in the side of the front seatbacks closest to the door. For vehicles with roof-mounted side impact airbags, there are also airbag modules in the ceiling of the vehicle, near the side window. 77