See also:

Immobilizer
The immobilizer prevents your vehicle from being started without the correct SmartKey. When leaving the vehicle, always take the SmartKey with you and lock the vehicle. The engine can be starte ...

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. ...

Important safety notes
In order for the battery to achieve the maximum possible service life, it must always be sufficiently charged. Have the battery checked regularly at a qualified specialist workshop, such as ...