2006 Mercedes C-Class Owner's Manual - Page 183

Controls in detail Climate control Air recirculation mode Switch to air recirculation mode to prevent unpleasant odors from entering the vehicle from the outside (e.g. before driving through a tunnel). This setting cuts off the intake of outside air and recirculates the air in the passenger compartment. Warning! Activating Press button , ( page 177). The indicator lamp on the button comes on. i The air recirculation mode is activated automatically at high outside temperatures. The indicator lamp on button , is not lit when the air recirculation mode is automatically switched on. A quantity of outside air is added after approximately 30 minutes. 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 tilt/sliding sunroof* can be immediately halted by moving the tilt/sliding sunroof* switch in the overhead control panel in any direction. The closing of the side windows and tilt/sliding sunroof* can be reversed by again pressing and holding the , button. G Fogged windows impair visibility, endangering you and others. If the windows begin to fog on the inside, switching off the air recirculation mode immediately should clear interior window fogging. If interior window fogging persists, make sure the air conditioning ( page 183) is activated, or press button P or 0. i Press and hold button , for approx. 2 seconds. The side windows and tilt/sliding sunroof* will close. You can release button , once the closing procedure has begun. The windows and tilt/sliding sunroof* continue closing until they are fully closed. Warning! G Never operate the side windows and the tilt/sliding sunroof* if there is the possibility of anyone being harmed by the closing procedure. 182