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.

Clamp off BATTERY NEGATIVE LEAD
Remove FOOTWELL SIDE TRIM PANEL ON A-PILLAR, LEFT

Disconnect plug connection (1).

Release nuts (2) and remove footwell module (3).

Fig 1: Identifying Footwell Module With Nuts And Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Carry out VEHICLE PROGRAMMING/ENCODING .