See also:

Changing the settings of the locking system
You can change the setting of the locking system in such a way that only the driver's door and the fuel filler flap are unlocked. This is useful if you frequently travel on your own. To change ...

Problems with your vehicle
If you should experience a problem with your vehicle, particularly one that you believe may affect its safe operation, we urge you to contact an authorized Mercedes-Benz Center immediately to ...

Restoring the factory settings
- Press the and buttons simultaneously for approximately six seconds until the battery check lamp flashes twice. ...