Mercedes-Benz GL-Class: Immobilizer - Theft deterrent locking systems - Safety - Mercedes-Benz GL-Class Owner's ManualMercedes-Benz GL-Class: 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).

    ATA (Anti-Theft Alarm system)
    A visual and audible alarm is triggered if the alarm system is armed and you open: • a door • the vehicle with the mechanical key • the tailgate • the hood The alarm is not switched off, ...

    See also:

    Deactivating the alarm when triggered
    If the alarm has been triggered it can be deactivated by pressing the Smart Key unlock button, or by positioning the Smart Key underneath the steering column (see 74, IF THE ENGINE FAILS TO START) ...

    Vehicle Identification Number (VIN) plate
    The vehicle identification number plate is attached as shown. This number is the identification for your vehicle and is used in the vehicle registration. ...

    If the engine fails to start
    If the vehicle has been unlocked using the emergency key blade or the Smart Key is not detected by the vehicle, it will be necessary to use the keyless start backup to disarm the alarm and start t ...