2010 Mercedes C-Class Owner's Manual - Page 192

190 Climate control system Function = Ù on/off (USA only) º Adopting driver's side settings for all zones (Canada only) ? AC cooling on/off A Front defroster Recommendation/Notes (Y page 195) (Y page 196) Controls in detail i Switch on/off the air conditioning. (Y page 191) i Keep this setting selected only until the (Y page 194) windshield or the side windows are clear again. i Set the temperature to 72‡ (22†). (Y page 192) B Temperature control, passenger side C 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 195) D Rear window defroster E Increasing air volume F Decreasing air volume G Display H Air distribution I Air distribution and air volume (automatic mode) (Y page 196) (Y page 194) (Y page 194) (Y page 194) i Switch on the automatic mode. The (Y page 192) indicator lamp in button à comes on. Notes on climate control system The climate control system is operational whenever the engine is running. You can operate the climate control system in either the automatic or manual mode. The system cools or heats the interior depending on the selected interior temperature. It can only function optimally when you are driving with the windows, the tilt/sliding sunroof or tilt/sliding panel closed. Nearly all dust particles, pollutants and odors are filtered out before outside air enters the passenger compartment through the air distribution system.