X. Water Leak at Seal End of Attachment Area of C-Pillar and Rear Window
X. Water ingress into seal at end of plug-in area for C-pillar to rear windowCause 1:
Opening (B-Figure 25) in inner C-pillar seal (B-Figure 25).
Procedure:
Plug opening (B-Figure 25).
1. Perform rain test.
2. Move Vario roof to intermediate position and secure (See WIS-document AR77.50-P-3000-01R).
Use Special Tool "Support".
3. Remove C-pillar paneling from Vario roof (See WIS-document AR68.30-P-4500R).
4. Loosen nut (A-Figure 25).
5. Pull out seal.
6. Plug opening (B-Figure 25) in seal with butyl tape.
Do not remove butyl tape from foil, this allows seal to slide into installation position more easily. Use 12 x 1.5 mm butyl strip
7. Install in the reverse order.
8. Perform leakage test.
Cause 2:
Cover plate to C-pillar upper section (C-Figure 26) leaky.
Procedure:
Reseal cover plate to C-pillar upper section (C-Figure 26).
1. Perform rain test.
2. Move Vario roof to intermediate position and secure (See WIS-document AR77.50-P-3000-01R).
Use Special Tool "Support".
3. Remove cover, cover carrier, and cover plate.
Remove glue residues.
4. Position butyl tape half over C-pillar corner and press down toward inside. (Figure 27). Use 12 x 1.5 mm butyl strip.
5. Glue cover plate onto C-pillar.
Clean gluing surface on C-pillar with window cleaning agent.
Always replace cover plate.
6. Position butyl tape along edge of cover plate (Figure 28).
^ Use 12 x 1.5 mm butyl strip.
^ Length of butyl tape approx. 0.1 m.
7. Position seal on cover plate and press on.
8. Seal cover plate to C-pillar (Figure 29). Use MB universal sealant.
Smooth bead of glue.
9. Install in the reverse order.
10. Perform leakage test.