61 31 122 Removing and installing / replacing tow hitch switch
WARNING: This page is about a different car, the 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.
Necessary preliminary tasks:
Open flap in luggage compartment panel on left.
Release screw (1).
Disconnect plug connection underneath and remove tow hitch switch (2).