2010 Mercedes GL-Class Owner's Manual - Page 180

178 Climate control The air conditioning uses the refrigerant R134a. This refrigerant is free of CFCs which are harmful to the ozone layer. shown in air volume display G (Y page 175). or X Controls in detail ! 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. Automatic mode 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. Press air distribution button ¯, P, or O. The indicator lamp in button à goes out. The automatic operation of air distribution switches off. Setting the temperature You can adjust the air temperature on each side of the passenger compartment. You should raise or lower the temperature setting in small increments, preferably starting at 72‡ (22†). X Increasing/decreasing: Turn temperature control : and/or C (Y page 175) slightly clockwise or counterclockwise. G Warning! If you switch off the air conditioning, 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. X Adjusting air distribution The air distribution can be adjusted manually. The symbols on the buttons represent the following functions: Symbol ¯ P O Function Directs air to the windshield and side air vents Directs air through the center and side air vents Directs air to the footwells and side air vents Set the desired temperature (Y page 178). X Activating: Press button Ã. The indicator lamp in the button comes on. The air volume and air distribution are adjusted automatically. i The settings for the passenger side are also used for the rear passenger compartment. X Deactivating: Press button I or K. The indicator lamp in button à goes out. The automatic operation of air volume switches off. The selected blower speed is X Press the desired air distribution button ¯, P, or O. The indicator lamp in button à goes out. The automatic mode is switched off. Air distribution is controlled according to the desired button.