See also:

How does the safety belt pretensioner and airbag supplemental restraint system work?
The safety belt pretensioner and airbag SRS are designed to activate when the vehicle sustains longitudinal deceleration sufficient to cause the sensors to close an electrical circuit that ...

Underbody
Flush the complete underside of your vehicle frequently. Keep body and door drain holes free from packed dirt. ...

Flash-to-pass
Flash-to-pass Pull toward you slightly to activate and release to deactivate. ...