Lexus 2003 SC430 Owner's Manual page 182

Center vents
21st01
The center vents may be opened or closed as shown.
Side vents
21sa06
The side vents may be opened or closed as shown.
Lower vent
21sa14a
The lower vent may be opened or closed as shown.
For removing frost or fog, it is recommended that you close the
lower vent when you push the "FRONT WINDSHIELD" button,
or use the "Floor" or the "Floor/Windshield" mode.
2003 SC430 from May '03 Prod. (OM24449U)
AIR CONDITIONING
165