tow LAND ROVER DISCOVERY 1999 Repair 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 unit, two air springs and two height sensors. The SLS system only operates on the rear suspension and is
designed to keep the vehicle level to compensate for uneven loads or when towing. The system controls the gap
between the chassis and the rear axle to a tolerance of ± 0.5 mm (0.02 in). The ride height of the rear of the vehicle
can be controlled in three modes of operation; normal ride height, Off-Road Mode (ORM) and extended mode. A
transportation mode, initiated using TestBook, is also available for moving the vehicle on a trailer.
The system is controlled electronically by an ECU which is shared with the ABS system and known as the Self
Levelling and Anti-Lock Braking System (SLABS) ECU. The system operates by using an air supply unit to inflate or
deflate the air springs to maintain a constant ride height.
An accessory remote handset is available to remotely operate the SLS system to allow easier connection and
disconnection of trailers.
Two SLS system warning lamps are located in the instrument pack. The warning lamp in the bottom left corner of the
instrument pack is the SLS warning lamp. If a fault is detected in the system, the warning lamp will illuminate
continuously in an amber colour. The warning lamp also flashes in an amber colour when the remote handset is being
used. The second warning lamp, located in the top right of the instrument pack is the ORM warning lamp. When ORM
is selected the warning lamp is continuously illuminated in an amber colour. When the SLS is between standard ride
height and ORM or in extended mode, the warning lamp will flash. Standard ride height, measured between the tip of
the axle bump stop rubber and the axle, is 61.5 mm (2.42 in). ORM ride height, measured between the tip of axle
bump stop and the axle, is 100 mm (3.93 in).
A switch is located in the group of six switches on the fascia and is used to select the ORM. The switch is non-latching
and must be depressed for a minimum of 0.5 seconds to signal the ECU that ORM has been requested.

BRAKES
70-38 REPAIRS
Brake pads - front
$% 70.40.02
WARNING: Brake pads must be renewed in axle
sets only, otherwise braking efficiency may be
impaired.
Remove
1.Raise front of vehicle.
WARNING: Do not work on or under a
vehicle supported only by a jack. Always
support the vehicle on safety stands.
2.Remove road wheel(s).
3.Remove lower guide pin bolt from caliper and
pivot caliper housing upwards.
4.Remove 2 brake pads from caliper carrier.
Shims are part of the brake pads.Refit
1.Rotate disc by hand and scrape all scale and
rust from around edge of disc.
2.Scrape rust from pad locating surfaces on
caliper.
3.Clean dust from calipers using brake cleaning
fluid.
WARNING: Do not use compressed air to
clean brake components. Dust from friction
materials can be harmful if inhaled.
4.Using tool LRT-70-500, press caliper pistons
fully into bores. Ensure that displaced fluid
does not overflow from reservoir.
5.Fit brake pads with chamfer towards leading
edge of disc.
6.Lower caliper housing over pads.
7.Ensure flats on guide pins locate with lugs on
caliper housing. fit new pivot bolt and tighten to
30 Nm (22 lbf.ft).
8.Fit road wheel(s) and tighten nuts to 140 Nm
(103 lbf.ft).
9.Remove stand(s) and lower vehicle.
10.Depress brake several times to set pad to disc
clearance.
11.Check and top-up brake fluid.

INTERIOR TRIM COMPONENTS
REPAIRS 76-3-21
11.Remove access panel from front edge of front
stowage pocket.
12.Remove screw securing front stowage pocket
to headlining.
13.Remove lens from front interior lamp.
14.Remove 2 nuts securing front interior lamp to
headlining.
15.Disconnect multiplug from front interior lamp.
16.Remove front interior lamp.
17.Remove 10 screws securing front stowage
pocket to headlining.
18.Disconnect 3 multiplugs from sunroof switches.
19.Remove front stowage pocket.
20.Remove caps from sun visor clips.
21.Remove screws and release both sun visor
clips.
22.Remove tail door aperture upper trim casing.
23.Remove rear sunroof aperture trim. 24.Remove front sunroof aperture trim.
25.Release end caps from all grab handles.
26.Remove 2 bolts securing each grab handle to
roof.
27.Remove all 4 grab handles.
28. Models with volumetric alarm: Release front
volumetric sensor from headlining and
disconnect multiplug.
29. Models with rear A/C:
aRelease rear A/C control panel from
headlining.
bDisconnect 2 multiplugs and 2 Lucar
connectors from rear A/C control panel.
cRemove rear A/C control panel.
30.Release rear interior lamp from headlining and
disconnect multiplug.
31.Remove rear interior lamp.

INTERIOR TRIM COMPONENTS
76-3-22 REPAIRS
32.Remove 2 clips securing rear of headlining to
roof.
33.Release rear sunroof switch from headlining.
34.Disconnect multiplug and remove rear sunroof
switch.
35.Remove screw securing headlining to roof.
36.With assistance, remove headlining.
37. Models with rear A/C:
aRemove foam pads from air vents.
bRelease 2 rear air vents from headlining.
cRelease 3 central air vents from headlining.
38.Remove 7 nuts securing each stowage pocket
to headlining and collect mounting plates.
39.Remove both pockets from headlining.
40.Remove 8 screws securing rear console to
headlining and collect 3 mounting plates.
41.Remove rear console from headlining.
Refit
1.Fit rear console and mounting plates to
headlining.
2.Fit and tighten nuts securing rear console to
headlining.
3.Fit both stowage pockets and mounting plates
to headlining.
4.Fit and tighten nuts securing stowage pockets
to headlining.
5. Models with rear A/C:
aFit 3 central air vents to headlining.
bFit 2 rear air vents to headlining.
cFit foam pads to air vents.
6.With assistance, position headlining in vehicle.
7.Fit and tighten screw securing centre of
headlining to roof.
8.Connect multiplug to rear sunroof switch.
9.Fit rear sunroof switch to rear console.
10.Fit clips securing rear edge of headlining to
sunroof.

INTERIOR TRIM COMPONENTS
REPAIRS 76-3-23
11.Position rear interior lamp to headlining and
connect multiplug.
12.Fit rear interior lamp to headlining.
13. Models with rear A/C:
aPosition rear A/C control panel to headlining
and connect multiplugs and Lucar
connectors.
bFit rear A/C control panel to headlining.
14. Models with volumetric alarm: Connect
multiplug to front volumetric sensor and fit
sensor to headlining.
15.Fit grab handles to headlining and secure with
bolts.
16.Fit end caps to grab handles.
17.Fit front sunroof aperture trim.
18.Fit rear sunroof aperture trim.
19.Fit tail door aperture upper trim casing.
20.Fit sun visor clips to headlining and secure with
screws.
21.Fit caps to sun visor clips.
22.Position front stowage pocket to headlining and
connect multiplugs to sunroof switches.
23.Fit and tighten 10 screws securing front
stowage pocket to headlining.
24.Connect multiplug to front interior lamp.
25.Fit front interior lamp to headlining and secure
with nuts.
26.Fit lens to front interior lamp.
27.Fit and tighten screw securing front stowage
pocket to headlining.
28.Fit access panel to front edge of front stowage
pocket.
29.Position sun visor to headlining and secure to
clip.
30.Connect multiplug to sun visor.
31.Fit and tighten screws securing sun visor to
headlining.
32.Repeat process for second sun visor.
33. Models with premium ICE: Position both 'A'
post trim casings and connect multiplugs to
speakers.
34.Fit both trim casings to 'A' posts and secure
with clips.
35.Fit both 'B' post upper trim casings.

+ INTERIOR TRIM COMPONENTS,
REPAIRS, Trim casing - upper - 'B' post.
36.Fit both 'D' post trim casings.

+ INTERIOR TRIM COMPONENTS,
REPAIRS, Trim casing - 'D' post.

INTERIOR TRIM COMPONENTS
76-3-24 REPAIRS
Stowage pocket - front
$% 76.67.26
Remove
1.Remove access panel from front edge of front
stowage pocket.
2.Remove screw securing front stowage pocket
to headlining.
3.Remove lense from front interior lamp.
4.Remove 2 nuts securing front interior lamp to
headlining.
5.Disconnect multiplug from front interior lamp.
6.Remove front interior lamp.
7.Remove 10 screws securing front stowage
pocket to headlining.
8.Disconnect 3 multiplugs from sunroof
switches.
9.Remove front stowage pocket. 10.Release clips securing sunroof switch pack.
11.Remove switch pack.
Refit
1.Fit sunroof switch pack to front stowage pocket
and secure with clips.
2.Position front stowage pocket to headlining
and connect multiplugs to sunroof switches.
3.Fit and tighten 10 screws securing front
stowage pocket to headlining.
4.Connect multiplug to front interior lamp.
5.Fit front interior lamp to headlining and secure
with nuts.
6.Fit lense to front interior lamp.
7.Fit and tighten screw securing front of front
stowage pocket to headlining.
8.Fit access panel to front stowage pocket.

SEATS
REPAIRS 76-5-17
4.Remove saddle bracket cover from lower rear
quarter to allow access to third row seat
securing bolts and nuts.
5.Remove top 2 bolts securing seat to lower rear
quarter panel.
6.Position the locally manufactured retainer
bracket across the seat mounting. Ensure that
the lugs on the end of the retainer fit below the
seat mounting bar, then partially fold the seat
so that the retainer bracket is held in position.
7.Remove lower 2 nuts securing seat to lower
rear quarter panel. The action of the spring will
now hold the retainer bracket in place.
8.Remove seat.Refit
1.Ensuring that the retainer bracket is in position
on the spring, position third row seat to its
mounting studs.
2.Fit nuts securing third row seat to lower rear
quarter panel and tighten to 22 Nm (16 lbf.ft).
3.Remove the retainer bracket, fit bolts securing
third row seat to lower rear quarter panel and
tighten to 22 Nm (16 lbf.ft).
4.Fit saddle bracket cover to third row seat
securing bolts, fit the cup holder (where
applicable) and stow the seat.

SEATS
REPAIRS 76-5-29
17.Release clip securing front of cover to squab
frame.
18.Release hooks from squab frame.
19.Fold cover upwards over squab until first row of
hog rings are visible.
20.Remove first row of hog rings. 21.Fold cover upwards over squab until second
row of hog rings are visible.
22.Remove second row of hog rings.
23.Push out centres of trim clips securing stowage
pocket elastic to seat frame.
24.Remove trim clip outers.
25.Release hooks from seat frame and feed
though to front of foam.
26.Fold cover upwards until third row of hog rings
are visible.
27.Remove third row of hog rings.
28.Remove hog rings securing rear of squab
cover to seat frame.
29.Release bar from seat frame.

SEATS
76-5-30 REPAIRS
30.Remove headrest guides.
31.Fold cover fully upwards and remove.
Refit
1.Fit squab cover to top of seat. Do not fold down
too far onto seat.
2.Fit headrest guides.
3.Fit grab handles to seat and secure with
screws.
4.Ensure top of cover fits correctly around grab
handles.
5.Fit bar securing rear of squab cover to seat
frame.
6.Fit hog rings securing rear of squab cover to
seat frame.
7.Pull cover down tight and align hog ring
location points.
8.Fit third row of hog rings.
9.Pull cover down tight and feed hooks though
foam.
10.Connect hooks to rear of squab frame.
11.Align stowage pocket elastic to seat frame and
secure with trim clips.
12.Pull cover down tight and align hog ring
location points.
13.Fit second row of hog rings.
14.Pull cover down tight and align hog ring
location points.
15.Fit first row of hog rings.
16.Pull cover down tight and connect hooks to
squab frame.
17.Feed front of cover through to rear.
18.Secure bottom of cover to frame with clip.
19.Fit clips securing ends of cover to frame.
20.Fit headrest to seat.
21.Turn seat upside down.
22.Secure rear edge of squab cover to frame with
clip.
23.Turn seat correct way up.
24.Fit inner edge trim casing to seat frame.
25.Fit outer edge trim casing and secure with
screws. 26.Position arm rest to seat, secure with screw and
loosen arm rest adjuster to the required
position.
27.Fit front seat.

+ SEATS, REPAIRS, Seat - front.

SUNROOF
76-6-18 REPAIRS
Motor - sunroof
$% 76.84.07
This procedure is applicable to the motor of both
sunroofs.
Remove
1.Gain access to the sunroof motor:
lFor front sunroof motor, remove front
stowage pocket.

+ INTERIOR TRIM COMPONENTS,
REPAIRS, Stowage pocket - front.
lFor rear sunroof motor, remove headlining.

+ INTERIOR TRIM COMPONENTS,
REPAIRS, Headlining.
CAUTION: The sunroof must be fully closed
before removing the sunroof motor.
2.Disconnect sunroof motor multiplug.
3.Remove 3 Torx screws securing motor to
sunroof tray.
4.Remove sunroof motor. Refit
1.Check sunroof motor timing notch (A) aligns
with edge of microswitch (B). If motor is out of
alignment, rotate counting wheel (C) to correct
position using an Allen key.
2.Ensure sunroof drive cables are in fully closed
position.
3.Fit motor to sunroof frame.
4.Fit Torx screws securing motor to sunroof tray
and tighten to 2 Nm (1.5 lbf.ft).
5.Connect sunroof motor multiplug.
6.Fit interior trim:
lFor front sunroof motor, fit front stowage
pocket.

+ INTERIOR TRIM COMPONENTS,
REPAIRS, Stowage pocket - front.
lFor rear sunroof motor, fit headlining.

+ INTERIOR TRIM COMPONENTS,
REPAIRS, Headlining.