Mercedes-Benz GL-Class: General information - SmartKey - Opening/closing - Mercedes-Benz GL-Class Owner's ManualMercedes-Benz GL-Class: General information

If you cannot lock or unlock the vehicle with the SmartKey, either the battery in the SmartKey is discharged, the SmartKey is faulty or the starter battery is discharged.

Check the battery in the SmartKey and replace it if necessary.
Unlock the driver's door using the mechanical key.
Lock the vehicle.
Have the starter battery and battery contacts checked at an authorized Mercedes-Benz Center.

If the SmartKey is faulty, contact Roadside Assistance or an authorized Mercedes-Benz Center.

    Important safety notes
    WARNING   When leaving the vehicle, always remove the SmartKey from the ignition lock. Always take the SmartKey with you and lock the vehicle. Do not leave children unsupervised in the ...

    See also:

    Precautions on cruise control
    ► If the cruise control system malfunctions, it will cancel automatically. The CRUISE indicator light on the meter panel will then blink to warn the driver. ► If the engine coolant ...

    Bulb Replacement
    For the proper type of replacement bulbs, see Replacement Bulbs  . For any bulb-changing procedure not listed in this section, contact your dealer. ...

    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 ...