See also:

Signal indicator mirrors (if equipped)
When the turn signal is activated, the outer portion of the appropriate mirror housing will blink. This provides an additional warning to other drivers that your vehicle is about to turn. ...

Motorcraft part numbers
1For spark plug replacement, see your authorized dealer. Refer to scheduled maintenance information for the appropriate intervals for changing the spark plugs. Replace the spark plugs with ones ...

How does the safety belt pretensioner and airbag supplementalrestraint 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 i ...