2009 Hyundai Sonata Owner's Manual - Page 110

FEATURES OF YOUR HYUNDAI 1 97 HEATING AND VENTILATION B670A01NF-GAT B670E01A-AAT B670B02O-AAT Rotary and Push Button Type Temperature Control Fan Speed Control (Blower Control) Cool Warm ONF048073 1. 2. 3. 4. 5. 6. Temperature control Fan speed control Mode selection knob Air conditioning switch Air intake control Rear window defroster switch ONF048077 ONF048079 This is used to turn the heating system on and off and to select the degree of heating desired. This is used to select the blower fan speed. The blower fan speed, and the volume of air delivered from the system, may be controlled manually by setting the blower control between the "1" and "4" position. 1 is the lowest fan speed and 4 is the highest fan speed. Setting the fan speed control knob to the "0" position turns off the fan.