For saloon/sedan only:
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2006 BMW M3, 2005 BMW M3, 2004 BMW M3, 2003 BMW M3, and 2002 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.
Loosen screws (1).
Unlock catch (2) and at same time unclip mechanism (3) towards bottom.
Unclip Bowden cable from mounting (4).
Installation:
Catches (1) of mechanism (3) must not be damaged.
Bowden cable (2) must be engaged correctly in mechanism (3).