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

Necessary preliminary tasks: 

• Remove window cavity cover strip on outside of rear door  
• Open door window.

Security version: 

• Remove door window glass

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

Release screws (1).

Detach trim (2) towards front/top.

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.

Installation: 

Trim (1) must not be damaged.

Installation: 

Following parts must not be damaged or missing:

1. Plastic nuts
2. Felt strip
3. Seal
   Fig 5: Identifying Plastic Nuts, Felt Strip And Seal

   Courtesy of BMW OF NORTH AMERICA, INC.

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.

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.