General notes

If the vehicle can no longer be locked or unlocked with the SmartKey, use the mechanical key.

If you use the mechanical key to unlock and open the driver's door or the trunk lid/ tailgate, the anti-theft alarm system will be triggered.

There are several ways to turn off the alarm:

•► To turn the alarm off with the SmartKey: press the button or on the SmartKey. button on the SmartKey.
or
•► Insert the SmartKey into the ignition lock.
or
•► To deactivate the alarm with KEYLESSGO: press the Start/Stop button in the ignition lock. The SmartKey must be in the vehicle.
or
•► Lock or unlock the vehicle using KEYLESSGO.

The SmartKey must be outside the vehicle.

If you unlock the vehicle using the mechanical key, the fuel filler flap will not be unlocked automatically.

•► To unlock the fuel filler flap: insert the SmartKey in the ignition lock.

    See also:

    Body: high energy absorption in the event of a front impact
    The extremely robust occupant compartment of the Mercedes-Benz M-Class, together with the front and rear deformation zones, forms an effective basis for the occupant protection system. The focus o ...

    Text reader settings
    Setting the text reader speed Select Vehicle by turning the COMAND controller and press to confirm. Select System and press to confirm. Select Text Reader and press to confirm. ...

    SmartKey
    You have put the wrong SmartKey in the ignition lock. Use the correct SmartKey. The SmartKey is in the ignition lock. Remove the SmartKey. The SmartKey nee ...