See also:

Mercedes-Benz M-Class Owners Manual
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Opening the tailgate from inside the vehicle (Wagon with a folding bench seat)
Inside of tailgate •► To unlock the tailgate: slide locking catch 2 to the right.•► To open: pull the top of handle 1.•► Swing the tailgate upwards.•► To lock the tailgate ...

Folding the seat backrest forward
i Vehicles with memory function: when you fold one or both parts of the rear seat backrest forwards, the respective front seat moves forward slightly, when necessary, in order to avoid conta ...