Immobilizer

The immobilizer prevents your vehicle from being started without the correct SmartKey.

When leaving the vehicle, always take the SmartKey with you and lock the vehicle. The engine can be started by anyone with a valid SmartKey that is left inside the vehicle.

To activate with the SmartKey: remove the SmartKey from the ignition lock.
To activate with KEYLESS-GO: switch the ignition off and open the driver's door.
To deactivate: switch on the ignition.

when you start the engine. The immobilizer is always deactivated when you start the engine.

In the event that the engine cannot be started when the starter battery is fully charged, the immobilizer may be faulty.

Contact an authorized Mercedes-Benz Center or call 1-800-FOR-MERCedes (in USA) or 1-800-387-0100 (in Canada).

    See also:

    Opening the call list and selecting an entry
    To call up the telephone menu: press the function button. Select Call lists in the telephone basic menu by sliding and turning the COMAND controller and press to confirm. A menu appea ...

    Closing
    - Replace the fuel filler cap and turn it clockwise. The fuel filler cap audibly engages. - Close the fuel filler flap. If you drive with the fuel filler cap open, reserve fuel warning la ...

    Rejects or ends a call
    Press the button on the steering wheel. If you are not in the Telephone menu, you can still reject or end a call. ...