Workshop Manuals Factory service & repair Land Rover
01 Introduction02 Key information03 Sequential multiport fuel injection (SFI-V8)04 Diesel05 Starting and charging06 Cruise control07 Transfer gearbox08 Automatic gearbox09 Ignition and shift interlock10 Anti-lock brake system11 Data link connector12 Instruments13 Warnings and indicators14 Horns15 Radio16 Navigation system17 Wash/wipe18 Heated front screen19 Heated rear screen20 Electrochromatic rear view mirror21 Headlamps22 Side lamps23 Stop lamps24 Direction indicator lamps25 Reversing lamps26 Fog guard lamps27 Interior lamps28 Cigar lighter/clock/accessory socket29 Heating and ventilation (without A/C)30 Heating and ventilation (WITH A/C)31 Power windows32 Sunroof33 Power seats34 Power mirrors35 Memory seats36 Heated seats37 Memory mirrors38 Supplementary restraint system (SRS)39 Trailer auxiliary socket40 Air suspension41 Security/central locking42 Power distribution43 Fuse details44 Ground distribution45 Component location table46 Component location views47 Connector views48 Harness routing49 Ground50 Index
Land Rover Range Rover P38 Electrical Troubleshooting Manual (1999 on)41 · Security/central locking
41 · General

Security/central locking – circuit operation

Make
Land Rover
Model
Range Rover P38 Electrical Troubleshooting Manual
Year
1999 on
Section
Circuit operation › Security/central locking – circuit operation
Security/central lockingSecurity/central locking – circuit operation

SECURITY/CENTRAL LOCKING – CIRCUIT OPERATION

Remote Handset Operation

The handset has two buttons, lock/superlock and unlock. The operation is as follows: Lock - single press of lock button.  Superlock - double press of lock button (within  1 second). Unlock - single press of unlock button from  either locked or superlocked. Lazy lock - press and hold lock button for more  than 1 second. (NB Hold on second press if superlock required  as well.) Lazy Seats - press unlock button for more than  1 second. (NB This will unlock as well.) 

Locking operation

There are six different ways to lock a new Range Rover. These are:

Sill Locking

 Depressing either of the front door sill buttons while both front doors are closed will result in all the doors and the tailgate locking, and the vehicle entering a sill locked state. In this state the alarm remains inactive (provides no protection), with no LED flash. Sill locking can be achieved independently of key-in and ignition switch status.

Slam Locking:

 Depressing either of the front door sill buttons with either front door open, will result in all the doors and the tailgate locking and the vehicle entering a slam locked state. Following a slam locking operation, the alarm will enter the perimetric mode, engine crank will be disabled and electronic engine immobilisation will be activated. Attempting to slam lock the vehicle with either the key in the ignition, or the ignition on, will cause unlocking of all the doors.

Key Locking

 A single turn of the key towards the front of the vehicle will result in all the doors and tailgate locking. The alarm will enter the perimetric mode, engine crank will be disabled and electronic engine immobilisation will be activated.

Key Superlocking

 A double turn of the key in a clockwise direction (i.e. towards the front of the vehicle) within 2 seconds, provided the doors, tailgate and bonnet are closed, will result in all the doors being superlocked. The alarm will enter the perimetric mode, engine crank will be disabled and electronic engine immobilisation will be activated.

Remote Locking

 A single press of the lock button on the remote handset will result in all the doors and the tailgate locking. The alarm will enter the perimetric mode, engine crank will be disabled and electronic engine immobilisation will be activated.

Remote Superlocking

 A double press of the lock button on the remote handset within 2 seconds, provided the doors, tailgate and bonnet are closed, will result in all the doors being superlocked (subject to ultrasonic look around - see Ultrasonic Sensor). Providing all the windows are closed, the perimetric and volumetric alarm will be set. If all the windows are not closed, then only the perimetric alarm will be set. Engine crank will be disabled and electronic engine immobilisation will be activated.

Parts & tools for this job For 1999 Land Rover Range Rover

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