Body - Door Cannot Be Opened From Inside/Outside
No: 76/15/05/NASFGN LM501-03
Ref: 76/15/03/NAS
Issue: 1
Date: 26 September 2005
Door Latch Mechanism Function
AFFECTED VEHICLE RANGE:
New Range Rover (LM)
Up to 5A180579
SITUATION:
DOOR LATCH ASSEMBLY FAILS TO OPERATE
A condition can occur where the door cannot be opened from either the interior or exterior handles, despite the locking mechanism functioning correctly when using a key or the remote. The internal lever on the door latch is jammed in the down position also. Remote or key effectiveness is indicated by the door lock-button state (up moves or down as expected).
RESOLUTION:
RELEASE AND REPLACE JAMMED LATCH MECHANISM
Should a customer express concern regarding the above, refer to the Service Procedure detailed in this Bulletin to release the affected door. Following jammed latch release, the door latch must be replaced.
In cases where the door opens, but from only one of the handles, follow the trouble shooting guide detailed in TIB 76/15/03/NAS (Edition 2) Troubleshooting Problems with Handles, Locks and Latches.
PARTS INFORMATION:
DDW WARRANTY CLAIMS:
DDW requires the use of causal part numbers. Labor only claims must show the causal part number with a quantity of zero.
Normal warranty policy and procedures apply.
REPAIR PROCEDURE
OPEN A JAMMED FRONT DOOR
1. Unlock all doors.
2. Verify that all door lock-buttons are in the UP position indicating an unlocked condition.
3. Partially open the rear door behind the affected front door. (Figure 1)
CAUTION:
Protection in the area of the front-edge of the rear door and the rear-edge of the front door is required to prevent paint damage.
4. Place tape or other suitable protection on the front-edge of the rear door and the rear-edge of the front door. (Figure 1 and Figure 2)
5. Identify the grommet covering the latch adjustment screw of the front door latch. (Figure 1)
6. Remove the grommet covering the latch adjustment screw. (Figure 2)
7. Using a suitable implement (bent wire or similar), locate and hook the adjustment screw. (Figure 3)
NOTE:
An audible click will be heard as the mechanism is released.
8. Release the mechanism using one of the following methods:
^ Move the adjuster screw up and down providing the small amount of movement that may release the mechanism.
^ Pull the screw in the upward direction using modest force.
9. When the lock mechanism releases, open the door.
10. Go to section "Replace Affected Door Latch."
OPENING A JAMMED REAR DOOR
1. Unlock all doors.
2. Verify that all door lock-buttons are in the UP position indicating an unlocked condition.
3. Fully open the window on the affected rear door.
4. Carefully remove the window-glass outer waist seal. (Figure 4)
5. Look through the space between the door glass and the exterior door panel and locate the exterior release-lever of the door latch inside the door cavity.
CAUTION:
Protection is required in the area of the forward glass-runner to prevent paint damage.
6. Place suitable protection in the area of the forward glass-runner to prevent paint damage. (Figure 5)
7. Using a slender implement with notched end, locate and hook the lever. (Figure 5)
NOTE:
A click will be heard as the mechanism is released.
8. Pull lever in a rearward/upward direction.
9. When the mechanism has been released open the door.
10. Go to section "Replace Affected Door Latch."
REPLACE AFFECTED DOOR LATCH
NOTE:
GTR lookup sequence is as follows:
GTR Home > NAS > Service Information/ LM Range Rover/2004 > Workshop Manuals > Service Procedures > Bookmark "DOORS/REPAIRS" > "Latch - front door" link. The same procedure applies to front and rear door latch replacement.
1. Refer to GTR Workshop Manual section 76.37.12 and replace the affected door latch assembly.
2. If excessive force is required to open the door after replacing the door latch, perform the following:
^ Check for preload on the interior or exterior release handles.
^ Verify that both handles return fully
3. Adjust door latch tensioning screws if required as follows:
^ Open affected front or rear door.
^ If installed, remove grommet from the affected door (Figure 6 and Figure 7) for access to the door lock tensioning screw.
NOTE:
The door lock tensioner screws rotate counterclockwise on LH doors, clockwise on RH doors to release tension.
^ Release the door lock tensioning screw two turns.
^ Tighten the door lock tensioning screws to 4 Nm (3 lbf ft).
4. Install the door lock tensioning screw grommet.
5. Close front and rear doors.
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