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.

In the event that the engine cannot be started when the starter battery is fully 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
    Switch off the engine. emove the SmartKey from the ignition lock. KEYLESS-GO: open the driver’s door. This switches the ignition to position 0, which corresponds to having removed the SmartK ...

    System self-test
    After you have switched on the ignition, the system carries out a self-diagnosis. WARNING A malfunction in the system has been detected if one of the following conditions occurs: • the indi ...

    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 lamp ...