R 350 4MATIC (251.165) V6-3.5L (272.967) (2006)
The left front door control unit senses the window position of the left front vehicle door and stores this information on the CAN-B bus.
The AAC control and operating unit (N22) or comfort AAC control and operating unit (N22/7) reads in the signal for the window position "Driver door
ON" to achieve better standard quality in the open position.
Recirculated air convenience closing, purpose
When the air recirculation switch (N22s2 or N22/7s2) is pressed for longer than 1.5 s, the convenience closing function is activated. The left front door
control unit stores the momentary window position and closes it, if open, in the automatic mode.
When the convenience closing function is completed, the window is returned to the stored position when the air recirculation switch is pressed for longer
than 1.5 s.