See also:

Mercedes-Benz M-Class Owners Manual
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Time/date
This submenu is only available on vehicles with no navigation module. To set the time and the date for vehicles with a navigation module, see the separate operating instructions. In the Time/da ...

Transmission positions
Park position Do not shift the transmission into position P() unless the vehicle is stationary. The parking lock should not be used as a brake when parking. In addition to engaging the parking ...