Land Rover Discovery Owners & Service Manuals

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.
  1. Verify the customer concern
  2. Visually inspect for obvious signs of damage and system integrity

Visual Inspection

ELECTRICAL

Physical damage to system where applicable

  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step
  2. 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
  3. 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.
  1. Draw a line around the full extent of the damage using a marker pen.
  2. Photograph the entire glass panel. If the damage extends behind any trim, remove the trim and take further photographs.
  3. Photograph the trademark logo and code to validate the glass panel as factory fitment.

SYMPTOM CHART

SYMPTOM CHART

SYMPTOM CHART

PANORAMIC ROOF DAMAGE EXAMPLES

PANORAMIC ROOF DAMAGE EXAMPLES

Clear impact marks can be seen at various points on the crack(s) caused by point contact of sharp object

PANORAMIC ROOF DAMAGE EXAMPLES

PANORAMIC ROOF DAMAGE EXAMPLES

Clear impact marks can be seen caused by impact from blunt/large object.

PANORAMIC ROOF DAMAGE EXAMPLES

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

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

PINPOINT TESTS

NOTE:

A scratch will usually be regular in shape, following the line of the object that caused it.

PINPOINT TESTS

NOTE:

Impact damage may cause a crack to form.

PINPOINT TESTS

PINPOINT TESTS

NOTE:

Multiple cracks will radiate out from the source.

PINPOINT TESTS

PINPOINT TESTS

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.

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