51 34 420 Removing and installing/replacing trim on window frame of rear door (front), left or right

Necessary preliminary tasks: 

• Remove OUTER WINDOW CAVITY COVER STRIP .
• Open door window.

Security version: 

• Remove DOOR WINDOW GLASS 

Partially detach rubber seal (1) and rubber guide (2).

Fig 1: Removing Window Cavity Cover Strip

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Release screws (1).

Detach trim (2) towards front/top.

Fig 2: Removing Screws

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Security version: 

M5 pull-in nuts (1) must not be damaged or missing.

Trim is designed as a protective cover and is screwed into place with M5 X 16 mm stainless steel screws without shims.

Fig 3: Identifying M5 Pull-In Nuts

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Installation: 

Trim (1) must not be damaged.

Fig 4: Identifying Trim

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Installation: 

Following parts must not be damaged or missing:

1. Plastic nuts
2. Felt strip
3. Seal

Fig 5: Installing Plastic Nuts

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Installation: 

To prevent wind noises.

Check gap with a 0.05 mm feeler gauge.

Slide feeler gauge between B-pillar trims on front and rear doors.

When the finishers are correctly adjusted, it must be possible to feel a slight suction resistance over the entire length of the finisher.

If the gap is too big, this may result in wind noises.

Fig 6: Using Feeler Gauge Between B-Pillar Trims On Front And Rear Doors

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Installation: 

If necessary, release screws (1).

Press trim (2) towards front and tighten down screws (1).

If gap is still too big, adjust TRIM ON WINDOW FRAME OF FRONT DOOR .

Fig 7: Removing Screws

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