1999 Toyota Sienna Owners Manual - Page 162
1999 Toyota Sienna Manual
Page 162 highlights
name. SIENNA (45403U) -Air flow selector settings -Operating tips D To cool off your Toyota after it has been parked in the hot sun, drive with the windows open for a few minutes. This vents the hot air, allowing the air conditioning to cool the interior more quickly. D Make sure the air intake grilles in front of the windshield are not blocked (by leaves or snow, for example). D On humid days, do not blow cold air on the windshield. The windshield could fog up because of the difference in air temperature on the inside and outside of the windshield. D Keep the area under the front seats clear to allow air to circulate throughout the vehicle. D On cold days, move the fan speed to "HI" for a minute to help clear the intake ducts of snow or moisture. This can reduce the amount of fogging on the windows. 162