64 11 225 Replacing controller for heating and A/C system blower
WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.
Necessary preliminary tasks:
Unlock plug connections (1) and disconnect.
Release screws (3).
Remove controller (2) towards top.