Please bear the following in mind
At the onset of winter, have your vehicle winterproofed at a qualified specialist workshop, e.g. at an authorized Mercedes- Benz Center.
Observe the notes in the "Changing a wheel" section
See also:
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 ...
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.
...
Switching the rear window wiper on/off
Combination switch
1 Switch
2 To wipe with washer fluid
3 To switch on intermittent
wiping
4 To switch off intermittent
wiping
5 To wipe with washer fluid
Turn the SmartKey to positi ...