2007 Mercedes R-Class Owner's Manual - Page 244

Controls in detail 3-zone automatic 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 cooling function, only operational when the engine is running, cools the vehicle down to the selected interior temperature. The cooling function also dehumidifies the air in the vehicle interior, thereby preventing the windows from fogging up. Warning! Activating Moist air can fog up the windows. You can dehumidify the air with the air conditioning. Press button 9 again. The indicator lamp on the button comes on. The air conditioning uses the refrigerant R-134a. 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 automatic climate control system. The air in the vehicle will then no longer be cooled or dehumidified. Press button 9 ( page 234). The indicator lamp on the button goes out. The cooling function switches off after a short delay. ! 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. 243