Centralized control of the power windows
WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2006 BMW Z4, 2006 BMW M3, 2006 BMW M Roadster, 2006 BMW M Coupe, and 2006 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.
The CAS is the master control unit for the power windows.
Because of the various national versions, the functions of the power windows are heavily dependent on the encoding.
> E60, E61, E63, E64
The power windows in the front doors are actuated by the door modules (TMFA and TMBF). The power windows for the rear doors are actuated by the body basic module (KBM). The appropriate commands are delivered on the data buses.
> E87, E90, E91
The power windows in the doors are actuated by the junction box electronics (JBE) and by the footwell module (FRM).