See also:

SOS Post-Crash Alert System™
The system automatically flashes the turn signal lamps and sounds the horn three times at four second intervals in the event of a serious impact that deploys an airbag (front, side, side curtain [ ...

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 ...

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