51 37 000 Removing and installing/replacing complete rear left or right power window regulator: Replacement
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 BMW 328xi, 2012 BMW 328i, 2011 BMW 328xi, 2011 BMW 328i, and 2010 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.
Release screws (1) and detach flat motor (2) from power window unit (3).
Tightening torque 51 35 1AZ.