Seat Air Bag Modules
WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
The seat back cover is specially designed to allow air bag deployment. In certain lateral collisions, the seat air bag module will inflate, even if the respective seat is unoccupied. The seat air bag module is designed to inflate between the door panel and occupant, adding enhanced protection.