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61 31 195 Remove and install front controller (replacing, without M-models to 10/2009)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Risk of damage!
Before dismantling it is imperative to note whether the controller is installed with a version before or after 10/2009!
NOTE: The number of buttons and shape of controller can vary depending on vehicle type.

Before 10/2009  : Controller (1) has buttons on bottom only  .

After 10/2009  : Controller (2) has buttons top and bottom  .

NOTE: These repair instructions describe the removal and installation (replacement) of controller (1)!
Fig 1: Identifying Number Of Buttons And Shape Of Controller
G06855285Courtesy of BMW OF NORTH AMERICA, INC.

Necessary preliminary tasks: 

Release screws (1). Tightening torque 61 31 5AZ .

Raise controller (2) and disconnect plug connection underneath.

Fig 2: Identifying Controller And Screws
G06213496Courtesy of BMW OF NORTH AMERICA, INC.

Replacement: 

Remove BUTTON UNIT .

Carry out VEHICLE PROGRAMMING/ENCODING .