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:
Kickdown
Kickdown is not possible in manual drive
program M. ...
Manual drive program
Switching on the manual drive program
The manual drive program is only available for
AMG vehicles.
Manual drive program M is different from
drive programs S and S+ with regard to
spontaneity, ...
Making adjustments in 1 mph (Canada: 1 km/h) increments
•► Briefly press the cruise control lever to the pressure point, up 1 for a higher speed or down 2 for a lower speed.
The last speed stored is increased or reduced. ...