2009 Hyundai Sonata Owner's Manual - Page 122

FEATURES OF YOUR HYUNDAI 1 109 B980F01NF-AAT B760A01NF-AAT Floor-Defrost Level (A, C, E, D) *1 When selecting the "Floor-Defrost" mode, the indicator light will come on and the air will be discharged through the windshield defroster nozzle, the floor vents, side defroster nozzle and side ventilator. If any of the temperature control switch, the blower fan control switch, or the defrost switch is selected in "Floor-Defrost" mode, the A/C will turn on automatically and "Fresh" mode will be activated. *1 : See page 1-96 Defrost Switch Type A CLIMATE CONTROL AIR FILTER (FOR EVAPORATOR AND BLOWER UNIT) (If Installed) Outside air ONF048071N Type B Inside of a vehicle Blower Filter Inside air Evaporator core HNF2181 ONF048072 When the "Defrost" button is pressed, the fresh mode will be automatically selected and the air will be discharged through the windshield defroster nozzle, side defroster nozzle and side ventilator. To assist in defrosting, the air conditioning will operate if ambient temperature is higher than 35°F(1.5°C) and automatically turns off if the ambient temperature drops below 33°F(0.6°C). The climate control air filter is located in the right side of the instrument panel. It operates to decrease the amount of pollutants entering the car. To replace the climate control air filter, refer to page 6-19.