51 34 211 Replacing rubber guide for rear left or right door window

Necessary preliminary tasks: 

All except Security version: 

• Remove COVER ON INSIDE OF DOOR WINDOW FRAME .
• Remove OUTER WINDOW CAVITY COVER STRIP .

Security version: 

• Remove DOOR WINDOW GLASS 
• Replace PLASTIC COVER ON RUBBER GUIDE 

Lever out rubber guide (1) and remove upwards out of side window guides.

Fig 1: Removing Rubber Guide

Courtesy of BMW OF NORTH AMERICA, INC.