Vehicle Security Alarm — If Equipped

The Vehicle Security Alarm monitors the doors and trunk for unauthorized entry and ignition switch for unauthorized operation. While the Vehicle Security Alarm is armed, interior switches for door locks and decklid release are disabled.

If something triggers the alarm, the Vehicle Security Alarm will signal for about 18 minutes. For the first three minutes, the horn will sound intermittently, the headlights will turn on, the park lamps and/or turn signals will flash and the Vehicle Security Light in the cluster will flash. Then the exterior lights will flash for another 15 minutes.

See also:

Six-Speed Automatic Transmission (C635) — If Equipped
The shift lever position display (located in the instrument panel cluster) indicates the transmission gear range. You must press the brake pedal to move the shift lever out of the PARK position ...

Service The Parksense Park Assist System
When the ParkSense Park Assist System is malfunctioning, the instrument cluster will actuate a single chime, once per ignition cycle. The instrument cluster will display the “CLEAN PARK ASSIST ...

Parksense System Usage Precautions
NOTE: • Ensure that the front and rear bumper are free of snow, ice, mud, dirt and debris to keep the ParkSense system operating properly. • Jackhammers, large trucks, and other vibrations ...