Seat Airbag: Description
WARNING: This page is about a different car, the 2006 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
The left and right seat airbags are located in the outboard end of the front seat backs. The airbag contains a bag, an inflator (small canister of highly compressed gas), and a mounting bracket. The seat airbag cannot be repaired and must be replaced, with the entire seat back assembly, if deployed or in any way damaged.