Lexus LX 470 1998 Owner's Manual page 158

CAUTION
Do not use the "FRONT WINDSHIELD" button during
cooled air operation in extremely humid weather.
difference between the temperature of the outside air and that
of the windshield could cause the outer surface of the
windshield to fog up blocking your vision.
(c) Rear air conditioning switch
20X045a
To turn on the rear air conditioning when you sit on the front
seat, push this switch. The rear air conditioning operates in the
automatic mode. To adjust the air flow and setting temperature,
follow the steps in accordance with "Rear air conditioning
controls" on page 143.
AIR CONDITIONING AND AUDIO
(d) Operating tips
D Make sure the air inlet grilles in front of the windshield are not
blocked by leaves or other obstructions.
The
D If air flow control is not satisfactory, check the dashboard vents.
(See "Center vents", "Side vents" and "Lower vent".)
D To help cool down the interior after parking in the hot sun, drive
for the first few minutes with the windows open. After the excess
heat has blown away, close the windows.
D When driving on dusty roads, close all windows. If dust thrown
up by the vehicle is still drawn into the vehicle after closing the
windows, it is recommended that the air intake control button be
left to the OUTSIDE AIR mode and the fan speed control button
be pressed to anywhere except the "OFF" button.
D If following another vehicle on a dusty road, or driving in windy
and dusty conditions, it is recommended that the air intake control
button be temporarily pressed in to the RECIRCULATED AIR
mode, which will close off the outside passage and prevent
outside air and dust from entering the vehicle interior.
141