Necessary preliminary tasks

WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 2011 BMW 328xi, 2011 BMW 328i, 2011 BMW 323i, 2010 BMW 335xi, and 2010 BMW 335i. However, it is still accessible from the selected car via links, so may be relevant.

Remove TRIM FROM REAR APRON
Remove right LUGGAGE COMPARTMENT TRIM PANEL
Partially detach insulating mat

Release screws (1) and pull back device holder (2).

Fig 1: Pulling Back Device Holder

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten plug connection (1) and disconnect.

Unlock catch (2) in direction of arrow and remove trailer module (3) upwards from device carrier (4).

Fig 2: Removing Catch

Courtesy of BMW OF NORTH AMERICA, INC.