2011 Mercedes C-Class Owner's Manual - Page 129

Setting the air vents X 127 To open/close: turn thumbwheel = up or down. Setting the rear-compartment air vents Setting the center vents in the rear compartment i Side window defroster vent : is never completely shut, even if side air vent ; is shut. Setting the air vent in the glove box When automatic climate control is activated, the glove box can be ventilated, for instance to cool its contents. The level of airflow depends on the airflow and air distribution settings. : Rear-compartment air vent thumbwheel ; Rear-compartment air vent, right = Rear-compartment air vent, left X To open/close: turn thumbwheel : up or down. : Air vent thumbwheel ; Air vent X To open/close: turn thumbwheel : clockwise or counter-clockwise. Z Climate control ! Close the air vent when heating the vehicle. At high outside temperatures, open the air vent and activate the "cooling with air dehumidification" function. Otherwise, temperature-sensitive items stored in the glove box could be damaged.