2007 Mercedes R-Class Owner's Manual - Page 226

Controls in detail Climate control The climate control switches to the following functions automatically: maximum blower speed and heating power air flows onto the windshield and the front side windows (side air vents must be open) the air conditioning compressor switches on at outside temperatures above approximately 41°F (5°C) for air-drying Deactivating Press button 0 ( page 220) once more. The indicator lamp on the button goes out. Defrosting is turned off. The previous settings are in effect again. The air conditioning compressor remains switched on. Windshield fogged on the outside The climate control switches automatically to the following functions: maximum blower speed and heating power air flows onto the windshield and the front side windows (side air vents must be open) the air conditioning compressor switches on at outside temperatures above approximately 41°F (5°C) for air-drying If the automatic air distribution is switched off: Press air distribution button 9 or a ( page 220). i Keep this setting selected only until the windshield is clear again. Switch the windshield wipers on ( page 60). Press button 0 ( page 220). The indicator lamp on the button comes on. i To switch off, you can also press button ´ or U ( page 220). 225