See also:

Restoring the factory settings
•► Press the and buttons simultaneously for approximately six seconds until the battery check lamp flashes twice. ...

Activating/deactivating
•► To activate: press the button. The indicator lamp above the button lights up. •► To switch off: press the button. The indicator lamp above the button goes out. The co ...

Transfer case
This section is only valid for vehicles with 4-wheel drive (4MATIC). Power is always transmitted to both axles. Performance tests may only be carried out on a 2-axle dynamometer. The brake ...