Workshop Manuals Factory service & repair Land Rover
01 Range Rover 2002MY ON Workshop Manual - System Description and Operation - LM - 6th Edition - NAS02 03 04 05 06 07 08 09 ENGINE - V810 11 12 ENGINE MANAGEMENT SYSTEM – V813 14 FUEL DELIVERY SYSTEM – V815 16 17 18 19 20 COOLING SYSTEM – V821 22 MANIFOLDS AND EXHAUST SYSTEM – V823 TRANSFER BOX24 AUTOMATIC TRANSMISSION – ZF 5HP2425 26 DRIVE AND PROPELLER SHAFTS27 28 FINAL DRIVE29 STEERING30 31 SUSPENSION32 33 34 35 BRAKES36 37 38 RESTRAINT SYSTEMS39 40 41 DOORS42 INTERIOR TRIM COMPONENTS43 44 45 SCREENS46 SEATS47 48 SUNROOF49 50 AIR CONDITIONING51 52 53 54 55 56 57 WIPERS AND WASHERS58 59 CHARGING AND STARTING60 61 62 63 64 LIGHTING65 66 BODY CONTROL UNIT67 68 COMMUNICATION DATA BUSES69 70 71 SECURITY72 WINDOWS73 74 75 ENTERTAINMENT AND INFORMATION SYSTEMS76 DRIVING AIDS77 78 INSTRUMENTS
Land Rover L322 Range Rover System Description and Operation71 · SECURITY
71 · General

Locking and Alarm Systems (page 3 of 9)

Make
Land Rover
Model
Range Rover L322 Range Rover System Description and Operation
Section
Description
SECURITYLocking and Alarm Systems · page 3 of 9
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SECURITY

86-5-6

DESCRIPTION AND OPERATION

CDL Switch
The CDL switch is a non latching push switch installed between the centre face vents on the fascia, below the hazard 
warning switch. The CDL switch allows occupants to centrally lock the vehicle without arming the alarm. When the 
CDL switch is pressed, a battery voltage signal is connected to the BCU.

Upper Tail Door Internal Release Switch
The internal upper tail door release switch is a non latching push switch installed on the centre console. The switch 
allows the tail door to be opened from inside the vehicle. When the switch is pressed a ground is connected to the 
BCU. The BCU only responds to the input when the CDL system is unlocked and the vehicle is stationary.

Upper Tail Door External Release Switch
The external upper tail door release switch is a microswitch installed in the license plate lamp housing in the bottom 
edge of the upper tail door. The switch is operated by a lever connected to a rubber covered plate set into the outside 
surface of the license plate lamp housing. When the switch is activated it connects a ground to the BCU. The BCU 
only responds to the input when the CDL system is unlocked and the vehicle is stationary.

Lower Tail Door Release Switch
The lower tail door release switch is a non latching push switch installed under a rubber cover in the top edge of the 
lower tail door. When the switch is pressed, a battery voltage signal is connected to the BCU. The BCU only responds 
to the input when the upper tail door is unlatched and the vehicle is stationary.

Lower Tail Door Release Relay
The lower tail door release relay is installed on the rear fusebox. When the BCU receives a valid input from the lower 
tail door release switch, it momentarily energises the relay to simultaneously activate the lower tail door release 
actuators.

Remote Handsets
The remote handset is incorporated into the head of the ignition key. Up to four different remote handsets can be 
initialised for use on the same vehicle.

The type of transmitter is market dependent and is either a Radio Frequency (RF) transmitter, operating at 315 or 433 
MHz, or an infrared transmitter. RF transmitters communicate with the vehicle through the radio antenna integrated 
into the rear window heater and have an operating range of 10 m (32.8 ft) minimum and up 30 m (98.4 ft) under 
optimum conditions. Infrared transmitters communicate with the vehicle through an infrared receiver integrated into 
the interior rear view mirror and have an operating range of 3 m (9.8 ft) minimum and up to 5 m (16.4 ft) under optimum 
conditions.

Each remote handset incorporates a signal processor, transmitter and power supply in a dustproof and waterproof 
housing. Buttons on the housing operate the remote functions. An LED on the housing flashes when a button is 
pressed to confirm operation to the user. If the LED does not flash when a button is pressed the battery needs 
recharging/replacing.

RF remote handsets have three operating buttons:

l

The lock button, for locking and superlocking of the vehicle and convenience closing of the windows and sunroof

l

The unlock button, for unlocking the vehicle and convenience opening of the windows and sunroof

l

The tail door open button, for opening the tail door while the rest of the vehicle remains locked and for panic alarm 
activation.

Infrared remote handsets only have two operating buttons, a lock button and an unlock button.

Parts & tools for this job Staging For Land Rover Range Rover

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