2009 Mercedes CLK-Class Owner's Manual - Page 186

Controls in detail Climate control system Climate control X 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 and helps prevent window fogging. Deactivating: Set air volume control 1 (Y page 179) to position 0. X Reactivating: Set air volume control 1 to any speed. The previous settings are once again in effect. The cooling function switches off after a short delay. Activating Moist air can fog up the windows. You can dehumidify the interior air with the air conditioning. X Press button 2 or 9. 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. Automatic climate control X Deactivating: Press button ´. The indicator lamp in the button comes on. X Reactivating: Press button ´. The indicator lamp in the button goes out. The previous settings are once again in effect. or X Press button U. The indicator lamp in the button comes on. Air volume and air distribution are adjusted automatically. 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. i Condensation may drip out from underneath the vehicle. This is normal and not an indication of a malfunction. Deactivating It is possible to deactivate the air conditioning. The interior air will then no longer be cooled or dehumidified. X ! If the air conditioning cannot be activated 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 Center. Press button 28 or 99. The indicator lamp in the button goes out. 8 9 USA only Canada only 184