2009 Mercedes R-Class Owner's Manual - Page 196

Controls in detail 3-zone automatic climate control Deactivating It is possible to deactivate the cooling function of the climate control system. The interior air will then no longer be cooled or dehumidified. X Press button 9. The indicator lamp in the button goes out. The cooling function switches off after a short delay. Have the air conditioning checked at the nearest authorized Mercedes-Benz Center. X X Set the desired temperature (Y page 195). Activating: Press button U. The indicator lamp in the button comes on. Automatic mode You can switch the climate control system on and off for each zone of the passenger compartment as desired. When operating the climate control system in automatic mode, the interior air temperature, air volume and air distribution are adjusted automatically. In automatic mode, cooling with dehumidification is switched on. This function can be switched off if necessary. i The settings for the passenger side are also used for the rear passenger compartment. X Activating Moist air can fog up the windows. You can dehumidify the interior air with the air conditioning. X Press button 9 again. The indicator lamp in the button comes on. The air conditioning uses the refrigerant R134a. This refrigerant is free of CFCs which are harmful to the ozone layer. Deactivating: Press button · or Q. The indicator lamp in button U goes out. The automatic air volume is switched off and is controlled according to the desired setting. The automatic air distribution remains switched on. Press one air distribution button 69, Z9, 79, a, {10, 89 or Y. The indicator lamp in button U goes out. The automatic air distribution is switched off and is controlled according to the desired position. The automatic air volume remains switched on. ! If the air conditioning cannot be activated again, this indicates that the air conditioning is losing refrigerant. The compressor has turned off. Canada only only G Warning! If you switch off the cooling function, the vehicle will not be cooled when weather conditions are warm. The windows can fog up more quickly. Window fogging may impair visibility and endanger you and others. or X 9 10 USA 194