Activation conditions

You can activate the HOLD function if:
• the vehicle is stationary.
• the engine is running.
• the driver's door is closed or your seat belt is fastened.
• the parking brake is not applied.
• the hood is closed.
• the transmission is in position D, R or N.
• DISTRONIC PLUS is deactivated.

    See also:

    Convenience opening feature
    You can ventilate the vehicle before you start driving. To do this, the key is used to carry out the following functions simultaneously: - unlock the vehicle - open the side windows - open the ...

    Mercedes-Benz M-Class Owners Manual
    ...

    Releasing seat belts
    Press release button 4 and guide belt tongue 2 back towards belt sash guide 1. Make sure that the seat belt is fully rolled up. Otherwise, the seat belt or belt tongue will be trapped in th ...