2008 Mercedes C-Class Owner's Manual - Page 265

Controls in detail 3-zone automatic climate control* (Canada only) 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 side windows. i You can adjust the air distribution when the front defroster is switched on. Windshield fogged on the outside Deactivating: Press button y ( page 259) again. The indicator lamp in the button goes out. Defrosting is turned off. The previous settings are once again in effect. i Keep this setting selected only until the windshield is clear again. Switch the windshield wipers on ( page 118). If the automatic mode of the climate control is switched off: Press right a and/or left e air distribution button Z ( page 259) repeatedly until one of the following symbols appears in display d: a or Y ( page 259). i Keep this setting selected only until the windshield is clear again. Activating: Press button y ( page 259). The indicator lamp in the button comes on. The air conditioning switches automatically to the following functions: cooling on to dehumidify most efficient blower speed and heating power, depending on outside temperature air flows onto the windshield and the front side windows the air recirculation mode is switched off i To switch defrosting off, you can also press i The cooling remains switched on. button ´, U, ·, Q or temperature controls 1 and 8 ( page 259). 264