See also:

Additives
Do not use any additives in the engine oil. This could damage the engine. ...

Setting the glove box air vent
When automatic climate control is activated, the glove box can be ventilated, for instance to cool its contents. The level of airflow depends on the airflow and air distribution settings. Cl ...

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. ...