Function of power window switches in rear doors - GF72.29-P-4104-02A
The position of the rocker switch is voltage coded with resistors. The coded voltage is read in at an input on the rear driver-side door control module (N69/3) or rear passenger-side door control module (N69/4).
The switch has five mechanical positions:
Center position neutral
First catch down Manual window down
First catch up Manual window up
Second catch down One-touch window down
Second catch up One-touch window up