See also:

Accepting a call
If someone calls you when you are in the Tel menu, a display message appears in the multifunction display, for example: – Press the button on the steering wheel to accept an incoming call. ...

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 ...

Fuse box in the engine compartment
  Make sure that the windshield wipers are turned off. WARNING Make sure that the windshield wipers are switched off and that the SmartKey is removed from the ignition lock before you ...