Locking the vehicle (mechanical key)

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

•► Open the driver's door.
•► Close the front-passenger door, the rear doors and the trunk lid/tailgate.
•► Press the locking button.
•► Check whether the locking knobs on the front-passenger door and the rear doors are still visible. Press down the locking knobs by hand, if necessary.
•► Close the driver's door.
•► Take the mechanical key out of the SmartKey
•► Insert the mechanical key into the lock of the driver's door as far as it will go.

•► Turn the mechanical key clockwise as far

•► Turn the mechanical key clockwise as far as it will go to position 1.
•► Turn the mechanical key back and remove it.
•► Make sure that the doors and the trunk lid/ tailgate are locked.
•► Insert the mechanical key into the SmartKey.

    See also:

    Vehicle remote closing
    If you forget to lock your vehicle but are no longer in the vicinity of the vehicle, it can be locked for you by the Mercedes-Benz Customer Assistance Center. The vehicle can be locked remotely ...

    Warranty
    The Service and Warranty Information booklet contains detailed information about the warranties covering your vehicle. Your authorized Mercedes-Benz Center will exchange or repair any defecti ...

    Important safety notes
    WARNING   When leaving the vehicle, always remove the SmartKey from the ignition lock. Always take the SmartKey with you and lock the vehicle. Do not leave children unsupervised in the ...