See also:

Remote vehicle unlocking
If you have unintentionally locked your vehicle (e.g. the SmartKey is still in the vehicle) and a replacement SmartKey is not available, the vehicle can be opened by a Mercedes-Benz Customer A ...

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

Adjusting luxury head restraints
WARNING When folding back the side cushions, never reach between the side cushion and the mounting post. You could otherwise be trapped. To adjust the side bolsters of the head restra ...