See also:

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. ...

Problems with the SmartKey
Problem Possible causes/consequences and  Solutions You cannot lock or unlock the vehicle using the SmartKey. The SmartKey battery is discharged or nearly discharged ...

Cleaning the trailer tow hitch
The ball coupling must be cleaned if it becomes dirty or corroded. – Remove rust on the ball of the ball coupling, e.g. with a wire brush. – Remove dirt with a clean, lint-free cloth or a brus ...