2008 Mercedes SL-Class Owner's Manual - Page 198

Controls in detail Automatic climate control Activating Briefly press button , ( page 190). The indicator lamp on the button comes on. matically at high outside temperatures if the concentration of carbon monoxide (CO) and/or nitrogen oxide (NOx) in the outside air increases, for example in a tunnel 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. Deactivating Briefly press button , ( page 190). The indicator lamp on the button goes out. mode is deactivated automatically after 5 minutes if the outside temperature is below approximately 41°F (5°C) after 5 minutes if the air conditioning is turned off after 30 minutes if the outside temperature is above approximately 41°F (5°C) Air recirculation mode with convenience closing or opening feature Warning! G i The air recirculation mode is activated auto- i The manually selected air recirculation Never operate the windows if there is the possibility of anyone being harmed by the closing procedure. In the event that the procedure causes potential danger, the closing of the windows can be immediately halted by releasing the , button or by pressing and pulling the respective window switch. At outside temperatures above 79°F (26°C) the system will not automatically switch back to outside air. Activating Press and hold button ,. The indicator lamp on the button comes on. The air recirculation mode is activated. The windows will close. 197