See also:

Activation conditions
You can activate the HOLD function if: • the vehicle is stationary. • the driver's door is closed or your seat belt is fastened. • the electric parking brake is released. • the hood is clo ...

Mercedes-Benz M-Class Owners Manual
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Important safety notes
WARNING In order to help prevent spilling liquids on vehicle occupants and/or vehicle equipment, only use containers that fit into the cup holder. Use lids on open containers and do not fill ...