2004 Hyundai Elantra Owner's Manual - Page 104

FEATURES OF YOUR HYUNDAI 1 93 B670C01E-AAT Air Intake Control Switch (Without A.Q.S) With the "Fresh" mode selected, air enters the vehicle from the outside and is heated or cooled according to the function selected. With the "Recirculation" mode selected, air from within the passenger compartment will be drawn through the heating system and heated or cooled according to the function selected. B980C03E-GAT Air Intake Control Switch (With A.Q.S) (If Installed) NOTE: o It should be noted that prolonged operation of the heating system in "Recirculation" mode will give rise to fogging of the windshield and side windows and the air within the passenger compartment will become stale. In addition, prolonged use of the air conditioning with the "Recirculation" mode selected may result in the air within the passenger compartment becoming excessively dry. o When the ignition switch is turned "ON", the air intake control will change to ( ) mode (regardless of switch position). This is normal operation. The air intake control operates in "AUTO" mode when turning the ignition to the "ON" position if the "AUTO" mode was used before shutting off the engine. HXD118G HXD118H This is used to select fresh outside air or recirculation inside air. To change the air intake control mode, (Fresh mode, Recirculation mode) push the control button. FRESH MODE ( ) : The indicator light on the button goes off when the air intake control is fresh mode. RECIRCULATION MODE ( ) : The indicator light on the button is illuminated when the air intake control is recirculation mode. This is used to select fresh outside air or recirculate inside air automatically. : : OFF ON Fresh mode : Air enters the vehicle from the outside and is heated or cooled according to the function selected.