Setting the side air vents
To open/close: turn thumbwheel 3 up or down.
Side window defroster vent 1 is never completely shut, even if side air vent
2 is shut.
See also:
Cleaning the rear view camera
► Use clear water and a soft cloth to
clean
camera lens 1.
Do not clean the camera lens and the area
around the rear view camera with a power
washer. ...
Resetting the side windows
You must reset each side window if a side window can no longer be closed fully.
Close all the doors.
Turn the SmartKey to position 1 or 2 in the ignition lock.
Pull the corresponding switch on ...
Cleaning the steering wheel and gear or selector lever
Thoroughly wipe with a damp cloth or use leather care agents that have
been recommended and approved by Mercedes- Benz.
...