Body - Roof Seals Noisy on Rough Roads
Date: March 15, 2006Order No.: P-B-77.33/40
Supersedes:
Group: 77
SUBJECT:
Model 171.454/456/473
A. Roof Seals Noisy When Driving on Rough Roads
B. Rear of Vano Roof Rattles When Driving
C. Front of Vano Roof Knocking Noise on Rough Roads, up to VIN F073286
Condition A - If you receive customer reports in the above model vehicles that the roof seals are noisy when driving on rough roads, either the coating on the seals is worn or the seals are dirty and/or dry. Before attempting any adjustments to the roof mechanism or replacing the seals, proceed as follows.
1. Move roof to an intermediate position to gain access to the roof seals.
2. Caution! To help avoid possible personal injury or vehicle damage, secure root according to WIS document AR77.50-P-3000-01V.
3. Clean all seals which come in contact with the painted metal areas of the roof and body and the upper edges of the side glass using a clean, soft cloth and the window cleaning agent listed below.
4. With another clean, soft cloth, apply the special sliding compound, antifriction oil listed below to the area of the roof seals which contact the painted metal areas of the roof and body and the upper edges of the side glass.
5. Remove support tool (W230 589 04 63 00) according to WIS document AR77.50-P-3000-01V.
6. Actuate roof through the full opening and closing cycle several times.
7. Close roof.
Condition B - If you receive customer reports in the above model vehicles regarding a raffle noise from the Vano Roof when driving, the mounting bolt for the eccentric lug may have worked loose. To resolve, perform the following.
1. Remove eccentric (Figure 1, Pos. 1).
2. Drill a 6.2 mm diameter hole in control arm (Figure 2, Pos. 2). Remove burrs and apply primer to bare metal areas.
3. Reinstall eccentric (Figure 1 Pos. 1), apply locking compound to bolt and tighten bolt to 10 Nm.
4. Adjust eccentric, refer to WIS Document AR77.33-P-3475V.
Condition C - If you receive customer reports in the above model vehicles regarding a knocking noise from the front of the Vano Roof when driving on rough roads, the adjustment of the front latch must be checked and adjusted if necessary. To resolve, perform the following.
1. Test drive the vehicle on a rough road to insure the knocking noise can be heard.
2. If knocking noise is audible, stop the vehicle and open the Vano Roof just until the trunk lid no longer exerts pressure on the seals below the rear window and at the base of the C-pillars.
Caution!
Do not place fingers or hands in gap between roof and body.
3. Drive vehicle again and check if noise is no longer present.
4. If no longer present, lubricate the roof seals as described in Condition A.
5. If the noise is still present, the adjustment of the front latches must be checked.
6. The locking hook (Figure 3, Pos. 2) must be in the center (Figure 3, Pos. 3) of the catch (Figure 3, Pos. 1) when the Vano Roof is locked.
7. If the locking hook is too low and contacts the catch, this may cause the knocking noise when driving on rough roads.
8. In this case, add shims at the inner mounting point of the catch until the locking hook is in the center.
9. If the adjustment does not correct the noise complaint, replace only the latch, reference WIS Document AR77.33-P-3400V.
10. Apply lubricant paste along the entire length of the catch pin.
11. Open and close the roof several times, then remove the excess lubricant paste.
Special Tools
Note:
This special tool should already be in every dealer's inventory. It was released and automatically delivered to all dealers in February 2002.
Parts Information
In Case of Warranty