Driver's Seat Airbag Module

The driver's seat airbag module is built in the steering wheel pad.

The SRS airbag module assembly cannot be disassembled. The driver's seat airbag module assembly consists of an inflator and airbag, and a steering wheel pad.

Fig 1: Identifying Steering Wheel Pad, Airbag And Inflator

Courtesy of SUBARU OF AMERICA, INC.

The inflator houses igniters and gas generating agents in a metal container. Igniters and gas generating agents are placed at two locations, and a 2-stage inflator which controls the airbag inflating speed according to the magnitude of impact at a collision is used. If the impact detected by the airbag sensor is equivalent to the level detected at a high speed, sudden collision, the two gas heating agents are ignited simultaneously. If the event of a collision at low or mid speed, the ignition of the 2nd stage gas generating agent is delayed to reduce the output of the inflator. Thus the inflator outputs power suitable for the severity of collision and relieves the impact to the passenger's head or upper body.

Fig 2: Identifying Gas Generating Agent Stage Igniters And Ignition Signal

Courtesy of SUBARU OF AMERICA, INC.