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.

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

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

    See also:

    Tire size designation, load-bearing capacity and speed rating
    1 Tire width 2 Nominal aspect ratio in % 3 Tire code 4 Rim diameter 5 Load bearing index 6 Speed rating Tire data is vehicle-specific and may deviate from the data in the example. ...

    Vehicles with automatic transmission
    Apply the parking brake firmly. Shift the transmission to position P. Using the SmartKey Turn the SmartKey to position 0 in the ignition lock and remove it. The immobilizer is activated ...

    The mbrace system
    The mbrace system provides different services, e.g.: - automatic and manual emergency call - Roadside Assistance call - MB Info call To adjust the volume during an mbrace call, proceed as foll ...