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:

    Removing the ball coupling
    – Remove the spring cotter. – Remove the bolt from the ball coupling recess. – Remove the ball coupling from the ball coupling recess. – Clean the ball coupling if it is dirty. Information on ...

    Automatic headlamp mode
    To switch on automatic headlamp mode: turn the light switch to or . SmartKey in position 1 in the ignition lock: the parking lamps are switched on or off automatically depending on the br ...

    Using KEYLESS-GO
    The KEYLESS-GO key must be outside the vehicle. All the doors must be closed. Touch recessed sensor surface 1 on the door handle until the side windows and the sliding sunroof or the panor ...