Locking the vehicle

If the vehicle can no longer be locked with the SmartKey, you can lock it by taking the following steps. If the central locking in the vehicle is malfunctioning, you cannot lock the trunk.

rear doors. Press down the locking knobs on the open rear doors.
Close the rear doors.
Open the front-passenger door.
Close the driver's door and the trunk lid.
door inside the vehicle. Press down the locking knob of the driver's door inside the vehicle.
front-passenger door. Press down the locking knob of the open front-passenger door.

your person and that it has not been left in Make sure that you have the SmartKey on your person and that it has not been left in the vehicle.

Close the front-passenger door.
locked. Make sure that the doors and the trunk are locked.

the fuel filler flap is not locked. The antitheft If you lock the vehicle as described above, the fuel filler flap is not locked. The antitheft alarm system is not armed.

    See also:

    Service messages
    Information on the type of service and service intervals (see separate Service Booklet). You can obtain further information from an authorized Mercedes-Benz Center or at http://www.mbusa.com (U ...

    Checking the coolant level
    Only check the coolant level when the vehicle is on a level surface and the engine has cooled down. – Turn the SmartKey to position 2 (Y page 139) in the ignition lock. On vehicles with KEYLES ...

    Conditions for activation
    RACE START can be activated when: • the doors are closed. • the engine is running and it has reached an operating temperature of approximately 176 °F (80 °C). This is the case when the engine ...