See also:

Mercedes-Benz M-Class Owners Manual
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Deleting one of the previous destinations
To activate navigation mode: press the function button once or twice. To show the menu: press the COMAND controller. Select Destination in the navigation system menu bar by turning t ...

Setting a speed
WARNING Keep in mind that it may take a brief moment until the vehicle has made the necessary adjustments. Increase or decrease the set vehicle speed to a value that the prevailing road c ...