2004 Mercedes ML-Class Owner's Manual - Page 139

Controls in detail Automatic climate control Activating Press button Ä ( page 135). The indicator lamp on the button comes on. i The air recirculation mode is deactivated automatically after 30 minutes if the automatic climate control is switched on after five minutes if the air conditioning is switched off after five minutes if the outside temperature is above approximately 45°F (7°C) Air conditioning The air conditioning is operational while the engine is running and cools the interior air to the temperature set by the operator. 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 ° ( page 135). The indicator lamp on the button ° comes on. Activating Moist air can fog up the windows. You can dehumidify the air with the air conditioning. Press button ° again. The indicator lamp on the button ° goes out. The air conditioning system uses the refrigerant R-134a. This refrigerant is free of CFCs which are harmful to the ozone layer. i To achieve the fastest possible cooling of the interior, the automatic climate control automatically switches to air recirculation. The indicator lamp in the button Ä is not illuminated when the system automatically switches to air recirculation. Deactivating Press button Ä ( page 135). The indicator lamp on the button goes out. i Condensation may drip out from underneath the vehicle. This is normal and not an indication of a malfunction. 139