Tachometer
The red band in the tachometer indicates the engine's overrevving range.
Do not drive in the overrevving range, as
this could damage the engine.
The fuel supply is interrupted to protect the engine when the red band is reached.
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. ...
Removing the ball coupling
Observe the manufacturer's installation instructions.
Press the protective cap into the ball coupling recess.
Make sure that the protective cap is firmly in place.
...
Cleaning genuine wood and trim elements
Wipe the wooden trim and trim pieces with a damp, lint-free cloth, e.g.
a microfiber cloth.
Heavy soiling: use car care and cleaning products recommended and approved
by Mercedes-Benz.
...