Function of Power Window Switches In Rear Doors

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