2004 Mercedes C-Class Owner's Manual - Page 159
2004 Mercedes C-Class Manual
Page 159 highlights
Controls in detail Climate control Deactivating Press button O ( page 155). The indicator lamp on the button goes out. At outside temperatures above 79°F (26°C) the system will not automatically switch back to outside air. A quantity of outside air is added after approximately 30 minutes. Deactivating the climate control system Deactivating Set air volume control 1 ( page 155) to position 0. Reactivating Set air volume control 1 ( page 155) to any speed. The closing of the side windows and sliding/pop-up roof* can be reversed by again pressing and holding the O button. i The air recirculation mode is activated automatically at high outside temperatures. If you have turned off the air conditioning ( page 160) or the outside temperature is below 41°F (5°C), the air recirculation mode will not switch on automatically. i If you keep button O pressed the side windows and sliding/pop-up roof* will return to their previous position. The air recirculation mode is deactivated automatically: after five minutes if the outside temperature is below approximately 41°F (5°C) after five minutes if the air conditioning is turned off after 30 minutes if the outside temperature is above approximately 41°F (5°C) 159