2004 Mercedes C-Class Owner's Manual - Page 158

Controls in detail Climate control Defrosting Deactivating Press button P ( page 155). The indicator lamp on the button goes out. Defrosting is turned off. Air recirculation mode Switch to air recirculation mode to prevent unpleasant odors from entering the vehicle from the outside. This setting cuts off the intake of outside air and recirculates the air in the passenger compartment. Warning! Activating Press button O ( page 155). The indicator lamp on the button comes on. i These settings should only be selected for a short time. Activating Press button P ( page 155). The indicator lamp on the button comes on. or Switch off air recirculation, if selected. Press button O ( page 155). The indicator lamp on the button goes out. Close center air vents ( page 155). Open left and right side air vents ( page 155) and adjust side air vents upwards. i If you keep button O pressed the side windows and sliding/pop-up roof* will close. Warning! G G When the outside temperature is below 41°F (5°C), only switch to air recirculation mode for short periods to prevent window fogging. Never operate the side windows and the sliding/pop-up roof* if there is the possibility of anyone being harmed by the closing procedure. In the event that the closing procedure causes potential danger, the closing of the side windows can be immediately halted by pressing or pulling the respective window switch. The closing of the sliding/pop-up roof* can be immediately halted by moving the sliding/pop-up roof* switch in the overhead control panel in any direction. 158