SmartKey functions

See also:

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 s ...

Windshield washer system and headlamp cleaning system
The washer fluid reservoir is used for both the windshield washer system and the headlamp cleaning system. Vehicle components and their service products must match. You should, therefore, only ...

Problems with the SmartKey
Problem Possible causes/consequences and Solutions You cannot lock or unlock the vehicle using the SmartKey. The SmartKey battery is discharged or nearly discharged. ...