Description And Operation: Anti-Theft

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The integrated key head transmitter (IKT) key is a standard passive anti-theft system (PATS) key with a remote keyless entry (RKE) transmitter incorporated into the key head. For additional information on PATS, refer to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) . For additional information on the RKE system, refer to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS .

NOTE: The perimeter anti-theft system is only available on the MKX. The feature is not available on the Edge.

NOTE: The smart junction box (SJB) is also known as the generic electronic module (GEM).

The perimeter anti-theft system consists of the following:

Door ajar switches (part of the door latch)
Door disarm switch (part of the driver door latch)
Exterior lamps
Hood switch
Horn
Key-in-ignition switch
Keyless entry keypad
IKT key
Smart junction box (SJB)

The perimeter anti-theft feature is controlled by the SJB. The alarm can be armed by using 1 of 3 commands:

Pressing the LOCK button on the IKT key
Pressing the door lock control switch to LOCK with the accompanying door open, then close the door
Pressing the 7/8 and 9/0 buttons simultaneously on the keyless entry keypad

The SJB monitors the door ajar switches, the hood switch, and the door disarm switch (all doors and the hood must be closed and the key must be out of the ignition switch). There is a 20-second pre-arm delay after which each door and hood is armed. If a door or the hood is open, the system still arms all the other closures. Only the open door or hood remains disarmed until it is closed. When the open entry point is closed, that entry point enters a 20-second pre-arm delay, then arms. In the event of an unauthorized entry, the alarm will be activated by the SJB. When the alarm is activated, the SJB intermittently grounds the horn relay, causing the horn to sound in regular intervals, and intermittently powers the turn signals, causing the turn signal lamps to flash in regular intervals.

The perimeter alarm can be disarmed only by:

pressing the UNLOCK button on the IKT key.
turning the door lock cylinder to the UNLOCK position.
using a valid programmed key to turn the ignition switch to the ON position.
entering the correct vehicle unlock code on the keyless entry keypad.

The perimeter alarm can be deactivated (not disarmed), by pressing the PANIC button on the RKE transmitter. This action will not disarm the alarm, but will stop the alarm from activation (horn sounding and turn signal lamps flashing). The perimeter alarm will continue to be armed.