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 ...

Folding the exterior mirrors in or out electrically
Make sure that the SmartKey is in position 1 or 2 in the ignition lock. Briefly press button 1. Both exterior mirrors fold in or out. Make sure that the exterior mirrors are always fol ...

General notes
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 ...