Land Rover Discovery: Wipers and Washers
COMPONENT LOCATION
- Central Junction Box (CJB)
- Rain/light sensor
- Rear Junction Box (RJB)
- Rear window wiper motor
- Rear window washer jet
- Instrument Cluster (IC)
- Windshield wiper motor and linkage assembly
- Windshield washer jet
- Engine Junction Box (EJB)
- Windshield washer reservoir
- Headlamp washer jet (2 off)
- Right steering wheel switchpack
OVERVIEW
Windshield wiper and washer operation is controlled by the Central Junction Box (CJB) in response to driver inputs and if fitted, signals from the rain/light sensor.
The wiper and washer system comprises:
- Windshield wiper motor and linkage assembly
- Windshield washer jets - located in cowl panel
- Rear window wiper motor
- Rear window washer jet - located in rear spoiler
- Headlamp washer (if fitted)
- Rain/light sensor (if fitted).
The windshield wipers have five operational states:
- Intermittent wipers - vehicles without rain/light sensor
- Automatic wipers - vehicles with rain/light sensor - automatic wipers can be disabled to operate as intermittent via the Instrument cluster (IC) menu.
- Flick wipe
- Windshield wash and wipe
- Slow wipe
- Fast wipe.
The rear window wiper has three operational states as follows:
- Rear window wash and wipe
- Intermittent rear window wipe
- Continuous rear window wipe.
A windshield washer reservoir contains washer fluid which is used by both the front and rear wipers and the headlamp washers (if fitted).
The headlamp washers (if fitted) use a dedicated headlamp washer pump located in the reservoir. The front and rear washers share a single washer pump.
On vehicles with a rain/light sensor, the wipers have an 'Auto' function. The 'Auto' function uses an output from the rain/light sensor to the CJB on a Local Interconnect Network (LIN) bus to provide automatic operation of the windshield wipers. The rain/light sensor is mounted on the inner surface of the windshield and transmits infra-red light to determine the amount of water on the outer surface of the windshield.
DESCRIPTION
- Windshield Wiper Motor and Linkage Assembly - Description
- Rear Window Wiper and Motor - Description
- Windshield Washer Reservoir - Description
- Headlamp Washers - Description
- Rain/Light Sensor (If Fitted) - Description
- Wipers and Washers Control Switch - Description
- Windshield Wiper Fast/Slow/Single Wipe - Operation
- Rear Window Wiper - Operation
- Headlamp Washers - Operation
Wiper Pivot Arm (G1780362) / Removal and InstallationWindshield Wiper Motor and Linkage Assembly - Description
READ NEXT:
Windshield Wiper Motor and Linkage Assembly - Description
Windshield Wiper Motor
NOTE:
Right Hand Drive (RHD) wiper assembly shown
Electrical connector
Electric windshield wiper motor
The windshield wiper motor comprises a 12V electric motor and gear w
Rear Window Wiper and Motor - Description
Rubber mounting (3 off)
Pivot
Motor assembly
Electrical connector
The single speed rear window wiper motor is mounted on the inner panel of
the tailgate and is secured with three bolts. Three
Windshield Washer Reservoir - Description
Windshield washer supply hose
Rear window washer supply hose
Washer fluid level sensor
Right headlamp washer supply hose
Headlamp washer pump
Front/rear washer pump
Left headlamp washer supp
SEE MORE:
Diagnosis and Testing Information and Entertainment System/ Symptom chart
SYMPTOM:
Audio/video system
inoperative at start up
POSSIBLE CAUSES:
Last used audio/video
source inoperative
MOST network fault
ACTION
GO to Pinpoint Test A.
SYMPTOM:
Audio/video soft key
greyed out on touch
screen
POSSIBLE CAUSES:
Last used audio/video
source ino
Auxiliary power sockets
There are 12V power sockets and 5V USB
charge sockets fitted to this vehicle.
Remove the cover to access a 12V power
socket.
Note: The 12V power sockets can be used
to power approved accessories that use
a maximum of 120 Watts.
Lift the cover to access a 5V USB charge
socket.
12V and 5V socket l
