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:
Opening and closing the sidewindows
1 Front left
2 Front right
3 Rear right
4 Rear left
The switches for all side windows are located
on the driver's door. There is also a switch on
each door for the corresponding side window.
...
Safety
The 2012 M-Class was deemed a Top Safety Pick by the Insurance Institute for
Highway Safety, meaning it received the top score of Good in front- and
side-impact crash tests, as well as for roof st ...
Using the SmartKey
The SmartKey must be close to
the
driver's door handle.
Point the tip of the SmartKey at
the driver's door handle.
Press and hold the
button until the side windows and
the sliding sunro ...