2002 Toyota 4Runner Owners Manual - Page 174
2002 Toyota 4Runner Manual
Page 174 highlights
'02 4Runner_U (L/O 0108) If air flow control is not satisfactory, check the instrument panel vents. The instrument panel vents may be opened or closed as shown. For removing frost or fog, it is recommended to close the lower vent when you push the windshield air flow button or using the "Floor", "Floor/Windshield" or "Windshield" mode. 174 2002 MY 4RUNNER_U (OM35787U)