See also:

Cleaning the display
Before cleaning the display, make sure that it is switched off and has cooled down. Clean the display surface using a commercially-available microfiber cloth and TFT/LCD display cleaner. ...

Warranty
The Service and Warranty Information booklet contains detailed information about the warranties covering your vehicle. Your authorized Mercedes-Benz Center will exchange or repair any defective ...

Dialing a number from the phone book
You can use the mobile phone to enter new telephone numbers into the phone book (see COMAND). If your mobile phone is operational, you can select and dial a number from the phone book at any t ...