Description & Operation: Notes

The anti-theft system is designed to prevent unauthorized entry into vehicle passenger and luggage compartments (and engine compartment on Mark VIII, Probe and Town Car). When activated, system provides both audible and visual warning alarms. The horn will sound and the low beam headlights, taillights, parking lights or hazard warning lights, and alarm indicator will flash off and on. In addition, the vehicle starter is disabled, preventing the vehicle from being started until alarm system has been deactivated.

The system is controlled by an Anti-Theft Control module (or Central Processing Unit on Probe). When armed, unauthorized entry is detected by the door ajar switches located in each door, a lock tamper detection switch in the trunk lid or liftgate lock cylinder, a hood switch on right fender panel or the ignition key lock cylinder sensor. An alarm indicator is located on the instrument panel.

The following existing vehicle components are also used in the anti-theft system: power door lock switches, door ajar switches and lights, ignition switch, horns and horn relay, low beam headlights, autolight system (some models), tail and parking lights, starter relay and remote keyless entry system (if equipped). Some models also have an ignition switch monitoring function which detects switch tampering. System does not have to be armed for ignition switch monitoring.