2007 Mercedes C-Class Owner's Manual - Page 184
2007 Mercedes C-Class Manual
Page 184 highlights
Controls in detail Automatic climate control Charcoal filter An activated charcoal filter markedly reduces bad odors and removes pollutants from air entering the passenger compartment. The charcoal filter can be activated or deactivated. The system switches automatically to the air recirculation mode, if the charcoal filter is switched on carbon monoxide (CO) or nitrogen oxide (NOX) concentration of the outside air increases beyond a predetermined level Activating Press button e ( page 175). The indicator lamp on the button comes on. Warning! G i If you press and hold button e, the side windows and tilt/sliding sunroof* will close. Never operate the side windows and the tilt/sliding sunroof* if there is the possibility of anyone being harmed by the closing procedure. When using the charcoal filter with convenience closing feature, should the upward movement of a window be blocked by some obstructions including but not limited to arms, hands, fingers. etc., the automatic reversal feature will not operate. 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 e. i The activated charcoal filter should be switched off when windows fog up on the inside, or if the passenger compartment needs to be quickly heated or cooled down. i The automatic air recirculation mode does not function if the A/C mode is deactivated (indicator lamp on button 2 or 9 not lit), or if the outside temperature has fallen below 41°F (5°C). 183