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:

    Locking and unlocking centrally
    The SmartKey centrally locks/unlocks: • the doors • the trunk lid • the fuel filler flap 1 Locks the vehicle 2 Unlocks the trunk lid 3 Unlocks the vehicle When unlocking, the turn signals ...

    General notes
    Cruise control maintains a constant road speed for you. It brakes automatically in order to avoid exceeding the set speed. On long and steep downhill gradients, especially if the vehicle is la ...

    Changing the battery
    You require a CR 2025 3 V cell battery. Take the mechanical key out of the SmartKey. Press mechanical key 2 into the opening in the SmartKey in the direction of the arrow until battery t ...