Body - Water Leaks To The Interior
No: LA-501-012Issue: 2
Date: 14 Mar 2006
SECTION: 501-01
Passenger Compartment Water Ingress
AFFECTED VEHICLE RANGE:
Land Rover LR3 (LA)
VIN: 5A000360 and up
CONDITION SUMMARY:
NOTE:
* Issue 2 changes are highlighted in gray and by asterisks.*
POSSIBLE CAUSES AND RESOLUTION OF WATER INGRESS
This informational bulletin provides technicians with guidance for identification of possible water ingress causes when water enters the passenger compartment of LR3 vehicles. If a customer complains of water ingress, locate the point of origin and take the appropriate corrective action.
PARTS:
Troubleshooting and diagnosis only.
WARRANTY:
This procedure is issued for information and guidance only. Only those procedures justified by a customer complaint are allowed to be claimed, and will be subject to warranty audit.
Normal warranty policy and procedures apply.
REPAIR PROCEDURE
TEST SUNROOF DRAINS
1. Perform the following test to determine if the sunroof drain tubes are functioning normally or are potentially the water ingress source.
NOTE:
The restricted access caused by the roof opening panel glass may require the vehicle to be inclined rearward slightly to pass water down the rear drain holes.
^ Place the vehicle on dry level ground.
^ Fully open the sunroof panel to gain access to the water trap.
^ Carefully pour water into the water traps, one corner at a time so that the water drains into the drain hole and drain hose. (Figures 1 and Figure 2)
^ Confirm that water has pooled on the ground at all four drain points under the A-pillar and C-pillars on both sides of the vehicle. (Figures 1 and 2)
RIGHT FRONT DRAIN CORRECTION PROCEDURE
NOTE:
This procedure should be followed if there is no water found pooling on the ground below the right-hand side A-Pillar during testing.
*CAUTION:
Care should be taken when removing the fender air intake grill to prevent damage to the retaining clips.*
*1. Remove the fender air intake grill by first pulling up to release the two lower clips, then pulling down and outward to release the two upper clips. (Figure 3)*
2. Remove the air duct and foam insulation pad to gain access
to the roof opening panel drain tube. (Figure 3)
3. Verify that the drain tube is protruding through the hole in the body. (Figure 4)
NOTE:
GTR lookup sequence is as follows:
GTR Home > NAS > Service Information/ LA LR3/2006 > Workshop Manuals > Discovery 3/LR3 2005 Workshop Manual > Bookmark "Body and Paint/Body and Paint/501-05 Interior Trim and Ornamentation" > Link "Cowl Side Trim Panel (76.13.27)"
4. If the tube is not protruding through the hole in the body perform the following steps to correctly position the roof opening panel drain tube:
* ^ Refer to GTR Workshop Manual Section 76.13.27 and remove the cowl side trim panel to gain access to the roof opening panel drain tube.*
^ Connect and secure the drain tube through the hole
^ Verify the valve of the roof opening panel drain tube can be fully opened. (Figure 5)
^ If the valve can not be opened, cut as required to permit full opening. (Figure 5)
^ Install cowl side trim panel
NOTE:
If both the routing of the roof opening panel drain tube is correct and the valve of the roof opening panel drain tube cannot be faulted, the foam insulation pad may be the cause. The foam sound-deadening pad may have been installed in such a way as to block the roof opening panel drain tube.
5. Remove and then install the foam sound-deadening pad, taking care to ensure that the roof opening panel drain tube valve locates in the indent in the foam insulation pad to avoid crimping the tube.
6. Confirm free-flow of water by repeating "Test Sunroof Drains" procedure for the right front drain.
7. If satisfactory test is completed install the duct and fender air intake grill.
8. If satisfactory test is NOT completed, blow out the drain tube with compressed air and test again.
9. If satisfactory test is still NOT completed, refer to GTR Workshop Manual Interior Trim and Ornamentation Section 76.64.15 and remove the headliner to gain access to the drain tube. (Figure 6)
10. Inspect for misrouting or kinking of the roof opening panel drain tube paying particular attention to:
^ Collapsed elbow joints
^ Pinched tube
^ Inclined routing
*11. Repair drain tube routing as necessary and confirm free-flow of water by repeating "Test Sunroof Drains" procedure for the right front drain.
12. If satisfactory test is completed, install the headliner.
13. Install the duct and fender air intake grill.*
LEFT FRONT DRAIN CORRECTION PROCEDURE
NOTE:
This procedure should be followed if there is no water found pooling on the ground below the left-hand side A-Pillar during testing.
1. Turn the wheels to the fully left lock position.
NOTE:
GTR lookup sequence is as follows:
GTR Home > NAS > Service Information/ LA LR3/2006 > Workshop Manuals > Discovery 3/LR3 2005 Workshop Manual > Bookmark "Body and Paint/Body and Paint/501-08 Exterior Trim and Ornamentation" > Link "Fender moulding (76.43.54)"
2. Refer to GTR Workshop Manual Section 76.43.54 and partially release the left-hand front fender molding.
3. Partially release the left-hand front wheel arch lining, to gain access to the roof opening panel drain tube. (Figure 7)
4. Verify that the drain tube is protruding through the hole in the body.
5. If the drain tube is not protruding perform the following:
NOTE:
GTR lookup sequence is as follows:
GTR Home > NAS > Service Information/ LA LR3/2006 > Workshop Manuals > Discovery 3/LR3 Workshop Manual > Bookmark "Electrical Distribution/418-00" > Link "Central Junction Box (CJB) (86.70.56)"
^ Refer to GTR Workshop Manual Section 86.70.56 and remove the CJB to gain access to the sunroof panel drain tube.
^ Connect and secure the drain tube through the hole in the body.
Check the valve of the roof opening panel drain tube can be fully opened. (Figure 5)
^ If the valve can not be opened, cut as required to permit full opening. (Figure 5)
6. Confirm free-flow of water by repeating "Test Sunroof Drains" procedure for the left front drain.
7. If the concern has not been corrected, blow out drain tube with compressed air and retest.
8. If the concern has still NOT been corrected, refer to GTR Workshop Manual Section 76.64.15 and remove the headliner to gain access to the drain tube. (Figure 8)
9. Inspect for misrouting or kinking of the roof opening panel drain tube, paying particular attention to:
^ Collapsed elbow joints
^ Pinched tube
^ Inclined routing
*10. Repair drain tube routing as necessary and retest.
11. If satisfactory test is completed install the headliner.*
12. Install the CJB.
13. When testing is satisfactorily completed, refer to GTR Section 76.43.54 and install the left-hand front wheel arch lining and left-hand front wheel arch molding.
RIGHT REAR DRAIN CORRECTION PROCEDURE
NOTE:
This procedure should be followed if there is no water is found pooling on the ground below the right-hand side C-Pillar during testing.
*CAUTION:
The fender panel rubber lip moulding is not to be displaced from installed position. Care must be taken when pulling the fender splash shield down to gain access to the drain tube ends.*
1. Open the right-hand side rear door.
2. Carefully pull the fender splash shield down to access roof opening panel drain tube. (Figure 9)
3. Verify that the roof opening panel drain tube is protruding through the hole in the body.
4. If the tube is not protruding perform the following:
^ Refer to GTR Workshop Manual Interior Trim and Ornamentation Section 76.13.34 and release the right-hand side C-pillar lower trim panel to gain access to the roof opening panel drain tube.
^ Connect and secure the drain tube through the hole in the body.
5. Check that the valve of the drain tube can be fully opened. (figure 5)
6. If the valve can not be opened, cut as required to permit full opening. (Figure 5)
7. Confirm free-flow of water by repeating "Test Sunroof Drains" procedure for the right rear drain.
8. If the concern has not been corrected, blow out drain tube with compressed air and retest.
9. If the concern has still NOT been corrected refer to GTR Section 76.64.15 and remove the headliner to gain access to the drain tube. (Figure 10)
10. Inspect for misrouting or kinking of the roof opening panel drain tube, paying particular attention to:
^ Collapsed elbow joints
^ Pinched tube
^ Inclined routing
*11. Repair drain tube routing as necessary and retest.
12. If satisfactory test is completed, install the headliner.*
13. Install the C-pillar lower trim panel.
14. Install the fender splash shield pulled away to access roof opening panel drain tube.
LEFT REAR DRAIN CORRECTION PROCEDURE
NOTE:
This procedure should be followed if there is no water found pooling on the ground below the left-hand side C-Pillar during testing.
*CAUTION:
The fender panel rubber lip moulding is not to be displaced from installed position. Care must be taken when pulling the fender splash shield down to gain access to the drain tube ends.*
1. Open the left-hand side rear door.
2. Carefully pull the fender splash shield down to access the roof opening panel drain tube. (Figure 11)
3. Verify that the drain tube is protruding through the hole in the body.
4. If the tube is not protruding, perform the following:
^ Refer to GTR Workshop Manual Section 76.13.34 and release the left-hand side C-pillar lower trim panel to gain access to the roof opening panel drain tube.
^ Connect and secure the drain tube through the hole in the body.
5. Check that the valve of the drain tube can be fully opened.
6. If the valve can not be opened, cut as required to permit full opening. (Figure 5)
7. Confirm free-flow of water by repeating "Test Sunroof Drains" procedure for the left rear drain.
8. If the concern has not been corrected, blow out drain tube with compressed air and retest.
9. If the concern has still NOT been corrected refer to GTR Section 76.64.15 and remove the headliner to gain access to the drain tube. (Figure 12)
10. Inspect for misrouting or kinking of the roof opening panel drain tube, paying particular attention to:
^ Collapsed elbow joints
^ Pinched tube
^ Inclined routing
*11 Repair drain tube routing as necessary and retest.
12. If satisfactory test completed, install the headliner.*
13. Install the C-pillar lower trim panel.
14. Install the fender splash shield pulled away to access roof opening panel drain tube.
*ROOF OPENING PANEL ALIGNMENT OR* LOOSE TORX SCREWS AS POTENTIAL LEAK SOURCE
NOTE:
When all of the drain tubes are confirmed as functioning correctly the Torx screws securing the glass roof panel can be tested as a leak source.
*1. Open the roof opening panel blind, leaving the roof opening panel closed.
2. Verify that the glass is centered in its opening.
3. Verify that the front edge is set flush or up to 1.0 mm (0.040 in) below the roof line.
4. Verify that the rear edge is set flush or up to 1.0 mm (0.040 in) higher than the roof line.
5. From inside the vehicle, verify that all six (6) Torx screws securing the roof opening panel are correctly positioned and tightened to 6 Nm (4.5 lbf-ft). (Figure 13)
6. If the roof opening panel is not set within the specified conditions or if any Torx screw is loose, align the roof opening panel as follows:
^ Loosen the six (6) roof opening panel Torx screws
^ Align the roof opening panel so it is centered in all directions to the exterior roof panel opening
^ Verify that the exterior front and rear edges are set within the specified conditions
^ Tighten the six (6) roof opening panel Torx screws to 6 Nm (4.5 lbf-ft).
7. Verify proper operation of the roof opening panel.
8. Close the roof opening panel blind.*
WATER INGRESS TO GLOVE COMPARTMENT OR PASSENGER FOOT WELL
NOTE:
If the previous steps have been carried out and both the roof opening panel drain tubes and the alignment/fasteners of the roof opening panel are correctly assembled, without the need for corrective action, this final check may reveal a footwell leak source.
1. Confirm that the plenum chamber panel is securely clipped as follows:
^ Inspect and verify that there is no visible gapping.
^ Gently but firmly applying pressure across the panel to confirm it is seated.
^ Listen for a click sound, which indicates that a clip has engaged (if not already engaged).
A-PILLAR WATER LEAK TO FOOT WELL
1. Refer to NAS Technical Bulletin LA501-006 and follow inspection and repair procedure for A-pillar trim clip replacement and sealing.
Disclaimer