See also:

Cleaning the headliner and carpets
•► Roof lining: use soft brushes or dry shampoo if it is particularly dirty. •► Carpets: use carpet and textile cleaners that have been approved and recommended by Mercedes-Benz. ...

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 bat ...

Correct use of the seat belts
WARNING USE SEAT BELTS PROPERLY Seat belts can only work when used properly. Never wear seat belts in any other way than as described in this section, as that could result in serious i ...