Windows fogged up on the inside
Activate the cooling with air
dehumidification function 
.
Activate automatic mode
.
If the windows continue to fog up,
activate the defrosting function.
You should only select this
setting until
the windshield is clear again.
See also:
Cleaning the steering wheel and gear or
selector lever
•► Thoroughly wipe with a damp cloth or use
leather care agents that have been
recommended and approved by Mercedes-
Benz. ...
Resetting
Reset the sliding sunroof if it does not move
smoothly.
Turn the SmartKey to position
2 in the ignition lock.
Raise the sliding sunroof fully at
the rear.
Keep the
switch pressed for ano ...
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 ...