Land Rover Discovery: Fixed Window Glass
PRINCIPLES OF OPERATION
For a detailed description of the Glass, Frames and Mechanisms, refer to
the relevant Description and Operation section in the workshop manual.
REFER to: Glass, Frames and Mechanisms (501-11 Glass, Frames and
Mechanisms, Description and Operation).
INSPECTION AND VERIFICATION
CAUTION:
Diagnosis by substitution from a donor vehicle is NOT acceptable.
Substitution of control modules does not guarantee confirmation of a
fault, and may also cause additional faults in the vehicle being tested
and/or the donor vehicle.
NOTES:
- If a control module or a component is suspect and the vehicle
remains under manufacturer warranty, refer to the Warranty Policy
and Procedures manual, or determine if any prior approval
programme is in operation, prior to the installation of a new
module/component.
- When performing voltage or resistance tests, always use a digital
multimeter accurate to three decimal places, and with an up-todate
calibration certificate. When testing resistance always take the
resistance of the digital multimeter leads into account.
- Check and rectify basic faults before beginning diagnostic routines
involving pinpoint tests.
- Refer to Section 100-00 General Information for window glass
health and safety precautions.
- Verify the customer concern
- Visually inspect for obvious signs of damage and system integrity
Visual Inspection
ELECTRICAL
Physical damage to system where applicable
- If an obvious cause for an observed or reported concern is found,
correct the cause (if possible) before proceeding to the next step
- If the cause is not visually evident, verify the symptom and refer to
the
Symptom Chart, alternatively check for Diagnostic Trouble Codes
(DTCs) and refer to the DTC Index
- Check DDW for open campaigns. Refer to the corresponding bulletins
and SSMs which may be valid for the specific customer complaint and
carry out the recommendations as required
WARRANTY REPAIRS
NOTES:
- The warranty period for the window/glass roof panel is twelve
months with the exception of delamination and electrical faults
where applicable.
- Warranty repairs should be completed using genuine parts, in
accordance with the Warranty Policy and Procedures Manual.
- Draw a line around the full extent of the damage using a marker pen.
- Photograph the entire glass panel. If the damage extends behind any
trim, remove the trim and take further photographs.
- Photograph the trademark logo and code to validate the glass panel
as factory fitment.
SYMPTOM CHART
![SYMPTOM CHART](images/books/227/index(12).31.jpg)
![SYMPTOM CHART](images/books/227/index(12).32.jpg)
PANORAMIC ROOF DAMAGE EXAMPLES
![PANORAMIC ROOF DAMAGE EXAMPLES](images/books/227/index(12).33.jpg)
Clear impact marks can be seen at various points on the crack(s) caused by
point contact of sharp object
![PANORAMIC ROOF DAMAGE EXAMPLES](images/books/227/index(11).34.jpg)
![PANORAMIC ROOF DAMAGE EXAMPLES](images/books/227/index(11).35.jpg)
Clear impact marks can be seen caused by impact from blunt/large object.
![PANORAMIC ROOF DAMAGE EXAMPLES](images/books/227/index(11).36.jpg)
Impacts marks always clear, careful examination with a magnifying glass
required to further identify the point of impact. This may have originated
from a small chip.
![PANORAMIC ROOF DAMAGE EXAMPLES](images/books/227/index(11).37.jpg)
Clear impact marks can be seen at various points on the crack(s). It is clear
that the cracks have propagated from the impact area.
![PANORAMIC ROOF DAMAGE EXAMPLES](images/books/227/index(11).38.jpg)
PINPOINT TESTS
NOTE:
A scratch will usually be regular in shape, following the line of the
object that caused it.
![PINPOINT TESTS](images/books/227/index(11).39.jpg)
NOTE:
Impact damage may cause a crack to form.
![PINPOINT TESTS](images/books/227/index(11).40.jpg)
![PINPOINT TESTS](images/books/227/index(11).41.jpg)
NOTE:
Multiple cracks will radiate out from the source.
![PINPOINT TESTS](images/books/227/index(10).42.jpg)
![PINPOINT TESTS](images/books/227/index(10).43.jpg)
DTC INDEX
For a complete list of all Diagnostic Trouble Codes (DTCs) that could be
logged on this vehicle, please refer to Section 100-00.
READ NEXT:
SPECIAL TOOL(S)
REMOVAL
NOTE:
Removal steps in this procedure may contain installation details.
Release the door window glass.
Special Tool(s): 501-114
INSTALLATION
To install, reverse the re
REMOVAL
Refer to: Front Door Trim Panel (501-05, Removal and Installation).
Release the clips.
NOTE:
Do not disassemble further if the component is removed for
access only.
Torque: 4.5 Nm
IN
SEE MORE:
Moving the left headlamp unit to access
the bulbs:
Remove the 2 plastic fixings.
Pull the tube up, to release it from the
air box. This will allow more room for
manoeuvrability.
Remove the 4 grille fixings.
Remove the 2 retaining bolts.
The headlamp unit can be withdrawn by
45 mm.
Moving
NOTES:
Make sure that the vehicle battery is fully charged before carrying
out this procedure.
After the battery has been disconnected or a new window regulator
and motor or door module has been installed, it is necessary to
initialize each door window motor separately to operate the onetouch