Description And Operation: Overview

WARNING: This page is about a different car, the 2018 Jaguar XE and 2017 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.

The active anti-theft system monitors the hinged panels for unauthorized opening. In some markets the anti-theft system also incorporates monitoring of the vehicle interior and vehicle tilt sensing.

The active anti-theft alarm system is controlled by the following body system control modules:

BCM/GWM (Body Control Module/Gateway Module).
DDM (Driver Door Module).
PDM (Passenger Door Module).
RDM (Rear Door Module) left and right.
IC (Instrument Cluster).

The BCM/GWM is the main controller in the system. The BCM/GWM controls the following security functions, in addition to other vehicle functions:

Single Locking, Double locking and unlocking (both global and single point entry).
Monitoring of hood switch and ajar switches in the door latches and the luggage compartment lid latch of the CDL (Central Door Locking) system
Volumetric sensor.
Tilt sensor.
Security Sounder - BBUS (Battery Back Up Sounder), or Passive Sounder, and vehicle horns (market dependent).
Arming, disarming and passive arming (market dependent).
Panic alarm function.

Two levels of vehicle anti-theft alarm are available: Perimeter Sensing and Perimeter Sensing with Alarm Sensor(s) (Volumetric sensor (market dependent), Tilt sensor (market dependent)).

Perimeter Sensing - all apertures (doors, luggage compartment lid and hood) are monitored for ajar status (doors ajar and latch status change) and a visual (via directional indicators) and audible alarm is emitted (via Security Sounder and Vehicle Horns (market dependent)) in the event of unauthorized access. The alarm is also triggered in the event of an unauthorized ignition request.

Perimeter Sensing with Alarm Sensor(s) - Volumetric Sensor (market dependent), Tilt Sensor (market dependent).

Volumetric Sensor (market dependent) - The passenger compartment interior is monitored for intrusion into the passenger compartment and a visual (via directional indicators) and audible alarm is emitted (via Security Sounder and Vehicle Horns (market dependent)) in the event of unauthorized access.

Tilt Sensor (market dependent) - The vehicle position reference the ground it sits on is monitored for unauthorized movement and a visual (via directional indicators) and audible alarm is emitted (via Security Sounder and Vehicle Horns (market dependent)) in the event of unauthorized movement.

NOTE: Volumetric mode and tilt sensing are not available in certain markets.

The smart key provides the following functionality:

Unlock (central unlock or single point entry).
Single Lock and Double lock (market dependent).
Tailgate release.
Approach lighting.
Panic alarm.

The lock and unlock switches also control a 'lazy' lock and unlock feature (market dependent) which will automatically close or open the windows with an extended press of the applicable switch. This feature is only available in certain markets and is controlled in conjunction with the door modules.

WARNING: Never double lock the vehicle with any person or animal inside.

NOTE: Double locking is only available in certain markets.

The smart key contains an emergency access key. This can be used in the event of failure of the smart key or the vehicle battery to unlock the vehicle. The driver door handle contains a concealed mechanical key barrel which can be used with the emergency key to access the vehicle. This will not disable the perimeter or alarm sensor (s) systems and the visual and audible alarm will be activated when the door is unlocked/opened. To cancel the alarm, the smart key must be held next to the IAU (Immobilizer Antenna Unit) and the stop/start switch must be pressed.

Emergency Locking - On each shut face of each door there is an emergency locking aperture. This is for use with the emergency access key in the event of a failure of the vehicle battery, to lock the vehicle. Remove the cover and insert the key into the aperture to mechanically lock each door in turn, the driver's door being the last door to be locked. Please ensure that the key is removed from the emergency locking aperture before each door is closed.

For additional information, refer to: Handles, Locks, Latches and Entry Systems .