Mercedes-Benz C-Class 2009 Owners Manual - Manual (Page 214)

Climate control system
212
Function Recommendation/Notes
4 2 AC cooling on/off i Switches on the air conditioning. The indicator lamp
in button 2 comes on.
( Y page 216)
5 y Front defroster i Keep this setting selected only until the windshield
or the side windows are clear again.
( Y page 220)
6 Temperature control, passenger side i Set the temperature to 72‡ (22†). ( Y page 217)
7 , Air recirculation i Only use this function for a short time, e.g. in a
tunnel. Otherwise, the windows can fog up due to lack
of fresh air.
( Y page 221)
8 ¯ Rear window defroster i At very low temperatures, rear window defroster
operation is delayed until the vehicle interior has
warmed up.
( Y page 222)
9 Q Increasing air volume ( Y page 220)
a ß Decreasing air volume ( Y page 220)
b Display
c Z Air distribution ( Y page 219)
d U Air distribution and air volume (automatic mode) i Switches on the automatic mode. The indicator
lamp in button U comes on.
( Y page 216)
Controls in detail