Mercedes-Benz M-Class Owners Manual

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Opening
You can open the trunk lid using the SmartKey. Press and hold the button on the SmartKey until the trunk lid opens. ...

Activating/deactivating airrecirculation mode
You can deactivate the flow of fresh air if unpleasant odors are entering the vehicle from outside. The air already inside the vehicle will then be recirculated. WARNING Fogged windows impair ...

Vehicle
Activating/deactivating the automatic door locking feature If you select the Auto. Door Locks function, the vehicle is centrally locked above a speed of around 9 mph (15 km/h). For further in ...