1999 LAND ROVER DISCOVERY warning

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Page 797 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual FRONT SUSPENSION
60-52 REPAIRS
Pipe assembly - pump or reservoir to  
valve block - ACE - V8
$% 60.60.32 
Introduction
CAUTION: The ACE hydraulic system is 
extremely sensitive to the ingress of dirt

Page 800 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual FRONT SUSPENSION
REPAIRS 60-55
Pipe assembly - pump or reservoir to  
valve block - ACE - diesel
$% 60.60.32  
CAUTION: The ACE hydraulic system is 
extremely sensitive to the ingress of dirt or 
debr

Page 818 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual REAR SUSPENSION
DESCRIPTION AND OPERATION 64-9
DESCRIPTION AND  OPERAT ION
SLS component layout
RH drive shown, LH drive similar
1Off-road mode switch
2SLS  warning lamp
3Instrument pack
4Off-road mod

Page 820 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual REAR SUSPENSION
DESCRIPTION AND OPERATION 64-11
1Battery supply (via SLABS relay)
2Ignition supply
3RH height sensor
4LH height sensor
5Off-road mode warning lamp
6Audible warning speaker
7Instrument

Page 821 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual REAR SUSPENSION
64-12 DESCRIPTION AND OPERATION
Description - SLS
General
The Self Levelling Suspension (SLS) system is an optional fitment and comprises an Electronic Control Unit (ECU), 
air supply

Page 827 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual REAR SUSPENSION
64-18 DESCRIPTION AND OPERATION
When SLS compressor operation is required, the ECU provides a battery supply to energise the SLS relay located in 
the engine compartment fusebox. When

Page 828 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual REAR SUSPENSION
DESCRIPTION AND OPERATION 64-19
Failure modes
Failures are indicated by the SLS warning lamp in the bottom left corner of the instrument pack illuminating 
continuously in an amber col

Page 831 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual REAR SUSPENSION
64-22 DESCRIPTION AND OPERATION
Off-road mode (ORM)
ORM is used to raise the rear of the vehicle from normal ride height to the ORM ride height of 100 mm between the 
tip of the bump s