2009 Mercedes SLR McLaren Owner's Manual - Page 192

Controls in detail Automatic climate control Front defroster You can use this setting to defrost the windshield, for example if it is iced up. You can also defog the windshield and the door windows. Deactivating Press button P ( page 186). The indicator lamp on the button goes out. Defrosting is turned off. The previous settings are in effect again. Windshield fogged on the outside i Keep this setting selected only until the windshield is clear again. Switch the windshield wipers on ( page 52). If the automatic air distribution and air volume are switched off: Turn air distribution controls 1 and 5 ( page 186) to position h or k. or Press control buttons 1, 5 and 9 ( page 186). The control buttons are engaged. The U symbol on the control buttons come on. Air distribution and air volume are adjusted automatically. i Keep this setting selected only until the windshield or the door windows are clear again. Activating Press button P ( page 186). The indicator lamp on the button comes on. The air conditioning switches to the following functions automatically: cooling on to dehumidify maximum blower speed and heating power air flows onto the windshield and the door windows the air recirculation mode is switched off i The cooling remains switched on. 192