Supplemental Inflatable Restraints (SIR) Description

Supplemental Inflatable Restraints (SIR) Description

The Supplemental Inflatable Restraints (SIR) is a safety device used in conjunction with the seat belt. The airbag does not replace the function of the seat belt. The driver and the passenger's must always fasten their seat belts and adjust them for a proper fit.

The SIR is designed to protect the driver and the front seat passenger in the event of a significant frontal impact to the vehicle. The airbags deploy if the force is applied from a direction within 30° of the vehicles center line.

The SIR system consists of a
^ Driver airbag module
^ Driver side airbag module
^ Passenger airbag module
^ Passenger side airbag module
^ Driver's and front passenger's seat belt pretensioner (and load limiter for some model)
^ Sensing and Diagnostic Module (SDM)
^ Clock spring
^ Wire harness and connectors
^ AIRBAG indicator on the instrument cluster
^ Passenger airbag OFF indicator on the clock screen
^ Side airbag sensor
^ Occupants classification system (Sensor & module)
^ Early crash sensor