2009 Mercedes R-Class Owner's Manual - Page 199

Controls in detail 3-zone automatic climate control Adjusting air volume USA only X Activating X Decrease/increase: Press button · or Q. The automatic mode is switched off. The selected blower speed is shown in air volume display b (Y page 186). Decrease/increase: Press button · or Q. The automatic mode is switched off. The selected blower speed appears in display e (Y page 189). Canada only X Press button |. The indicator lamp in the button comes on. The climate control switches to the following functions automatically: Rmost efficient blower speed and heating power, depending on outside temperature Rair was set before the front defroster was switched on. The indicator lamp in button | goes out. The indicator lamp in button 9 comes on. or X flows onto the windshield and the front door windows (side air vents must be open) air conditioning compressor switches on at outside temperatures above approximately 41‡ (5†) for airdrying Rthe Turn temperature control 1 and/or 7 (USA only) (Y page 186) or 1 and/or 9 (Canada only) (Y page 189) slightly in any direction. Heating switches to the temperature that was set before the front defroster was switched on. The indicator lamp in button | goes out. The indicator lamp in button 9 comes on. 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 Keep this setting selected only until the windshield or the side windows are clear again. Adjustments You can adjust the air volume and the temperature when the front defroster is switched on. The air flow will remain on the windshield and front door windows. X Press button Ï to decrease or button Q to increase air volume to the desired level. The air volume decreases/increases to the next lower/higher blower speed and heating switches to the temperature that i The air conditioning compressor remains on even if the indicator lamp in button | goes out. This helps to prevent the windshield from fogging. Deactivating X Press button | once more. The indicator lamp in the button goes out. Defrosting is turned off. Z 197