Land Rover Defender: Anti-Theft - Active - Component Location, Overview

COMPONENT LOCATION

COMPONENT LOCATION - 1 OF 5

NOTES:

• Right Hand Drive (RHD) vehicle is shown, Left Hand Drive (LHD) vehicle is similar.
• Vehicle with 5 doors is shown. Vehicle with 3 doors is similar.

1. Volumetric sensor
2. Instrument Panel Cluster (IPC)
3. Immobilizer Antenna Unit (IAU)
4. Driver Door Control Module (DDM)
5. Ajar switch - Driver door
6. Ajar switch - Rear right door
7. Driver Rear Door Module (DRDM)
8. Ajar switch - Rear left door
9. Passenger Rear Door Module (PRDM)
10. Ajar switch - Passenger door
11. Passenger Door Control Module (PDM)
12. Body Control Module (BCM)/ Gateway Control Module (GWM)

COMPONENT LOCATION - 2 OF 5

1. Battery Back-Up Sounder (BBUS) - If equipped
2. Left hood latch
3. Horn - Left
4. Hood safety latch
5. Right hood latch
6. Horn - Right
7. Passive sounder - If equipped

COMPONENT LOCATION - 3 OF 5

NOTES:

• RHD vehicle is shown, LHD vehicle is similar.
• Vehicle with 5 doors is shown. Vehicle with 3 doors is similar.

1. Radio Frequency (RF) receiver
2. Tailgate ajar latch
3. Remote Function Actuator (RFA)

COMPONENT LOCATION - 4 OF 5

NOTES:

• RHD vehicle is shown, LHD vehicle is similar.
• Vehicle with 5 doors is shown. Vehicle with 3 doors is similar.

1. Low Frequency (LF) antenna - Front passenger compartment
2. LF antenna - Right passenger compartment
3. LF antenna - Left luggage compartment
4. LF antenna - Rear passenger compartment - Only for passive start system
5. LF antenna - Left passenger compartment

COMPONENT LOCATION - 5 OF 5

NOTES:

• RHD vehicle is shown, LHD vehicle is similar.
• Vehicle with 5 doors is shown. Vehicle with 3 doors is similar.

1. Passive entry transceiver - Front
2. Passive entry transceiver - Rear

OVERVIEW

The active anti-theft system monitors all doors, hood and tailgate for unauthorized opening. In some markets the antitheft system also incorporates monitoring of the passenger compartment and tilt sensing.

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

• BCM/ GWM
• DDM
• PDM
• PRDM
• DRDM
• IPC
• RFA.

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 (market dependant) and unlocking (both central unlock and single point entry).
• Monitoring of the hood switch, door ajar switches and the tailgate ajar switch of the Central Door Locking (CDL) system.
• Passive Entry Passive Start (PEPS)system.
• Volumetric sensor.
• Smart key transponder reading.
• Security sounder - BBUS or passive sounder.
• Passive arming and disarming.
• Panic alarm function.
• Interior lighting.

Depending on vehicle configuration, 2 levels of vehicle anti-theft alarm are available:

• Perimeter sensing mode - Monitors all opening panels.
• Perimeter with alarm sensing mode - Monitors the passenger compartment for intrusion and it also incorporates a tilt sensor to monitor when the vehicle is being moved.

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

Perimeter sensing mode

All apertures (doors, tailgate and hood) are monitored for ajar status (doors ajar and latch status change).

A visual (through turn signal indicators) and audible alarm are emitted through security sounder and vehicle horns (market dependent) in the event of unauthorized access. The alarm is also triggered in the event of an unauthorized start request.

Smart key

The smart key provides the following functions:

• Unlock (central unlock or single point entry).
• Single lock and double lock (market dependant).
• Remote tailgate release.
• Approach lighting.
• Panic alarm.

The lock and unlock switches also control a 'lazy' lock and unlock feature. The 'lazy' lock and unlock feature automatically closes or opens the windows with an extended press of the applicable switch. The 'lazy' lock and unlock 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 (DL) is only available in certain markets.

The smart key contains an emergency key. The emergency key can be used in the event of failure of the smart key or the startup battery to unlock the vehicle. The driver door handle contains a mechanical key barrel which can be used with the emergency key to access the vehicle. The emergency key to access the vehicle does not disable the perimeter sensing system. The visual and audible alarm is activated when the door is unlocked/opened. To cancel the alarm, the smart key must be held next to the IAU and the stop/start switch must be operated.

Emergency locking

On the inside face of each door there is an emergency key aperture. The aperture is used with the emergency key in the event of a failure of the startup battery to lock the vehicle.

Remove the cover and insert the emergency key into the aperture to mechanically lock each door in turn. The driver door is always the last door to be locked. Please make sure that the emergency key is removed from the emergency key aperture before each door is closed.

READ NEXT: