See also:

Vehicle remote opening
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 Assis ...

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. ...

Safety systems
Display messages Possible causes/consequences and Solutions Currently Unavailable See Operator's Manual G Risk of accident ABS (Anti-lock Braking System), ESP® (E ...