2007 Mercedes R-Class Owner's Manual - Page 229

Controls in detail Climate control Convenience opening: Press and hold button : until the windows and the tilt/sliding panel are opened or have reached the desired position. The indicator lamp on the button goes out. The air recirculation mode is deactivated. Air conditioning The air conditioning is operational while the engine is running and cools the interior air to the temperature set by the operator. In addition, the air conditioning dehumidifies the interior air at outside temperatures above 41°F (5° C) and helps prevent window fogging. Warning! Activating Moist air can fog up the windows. You can dehumidify the air with the air conditioning. Press button 9 ( page 220) again. The indicator lamp on the button comes on. The air conditioning uses the refrigerant R134a. This refrigerant is free of CFCs which are harmful to the ozone layer. G If you turn off the cooling function, the interior air is not dried. The windows can fog up more quickly. Window fogging may impair visibility and endanger you and others. Deactivating It is possible to deactivate the air conditioning (cooling) function of the climate control system. The air in the vehicle will then no longer be cooled or dehumidified. Press button 9 ( page 220). The indicator lamp on the button goes out. ! If the air conditioning cannot be turned on again, this indicates that the air conditioning is losing refrigerant. The compressor has turned off. Have the air conditioning checked at the nearest authorized Mercedes-Benz Light Truck Center. i Condensation may drip out from underneath the vehicle. This is normal and not an indication of a malfunction. 228