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:

    General notes
    USA only: This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference, and 2. this device must a ...

    Safety guidelines for seat belts, Emergency Tensioning Devices (ETDs) and air bags
    WARNING - Damaged seat belts or seat belts that have been subjected to stress in an accident must be replaced. Their anchoring points must also be checked. Only use seat belts installed or s ...

    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 ...