51 32 155 Adjusting limit stop for front left or right door window (Z3 roadster),
WARNING: This page is about a different car, the 2002 BMW Z3 and 2001 BMW Z3. However, it is still accessible from the selected car via links, so may be relevant.
Operation Is Described In:
Adjusting front left or right door window (Z3 roadster) refer to 51 32 154 ADJUSTING FRONT LEFT OR RIGHT DOOR WINDOW (Z3 ROADSTER) .