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 [ ...

Automatic search for parking space
To start, press the APA control switch (on the center console). The message center will display ACTIVE PARK SEARCHING. To designate what side of the street to search on, use the turn signal. ...

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. ...