51 37 000 Removing and installing complete electrical window regulator from rear left and right sides
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 BMW 540i, 2002 BMW 540i, 2001 BMW 540i, 2000 BMW 540i, and 1999 BMW 540i. However, it is still accessible from the selected car via links, so may be relevant.
Remove rear door window,
refer to 51 34 171 REPLACING DOOR WINDOW GLASS, REAR LEFT OR RIGHT (PROTECTION)
Untighten screws, unfasten connector and remove window regulator (1).