Driver's door switch block
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.
All power window functions can be operated from the switch block in the driver's door. The switch block in the driver's door sends its signals across the LIN bus to the footwell module (FRM).