Vehicles with manual transmission

•► Shift to either first gear or reverse gear R.
•► Turn the SmartKey to position 0 in the ignition lock and remove it.
The immobilizer is activated.
•► Apply the parking brake firmly.

    See also:

    Mercedes-Benz M-Class Owners Manual
    ...

    Checking the coolant level
    Only check the coolant level when the vehicle is on a level surface and the engine has cooled down. – Turn the SmartKey to position 2 (Y page 139) in the ignition lock. On vehicles with KEYLES ...

    Notes on care
    Regular care of your vehicle is a condition for retaining the quality in the long term. Use care products and cleaning agents recommended and approved by Mercedes- Benz. WARNING Many cleanin ...