Lexus RX300 2003, Owner'S Manual

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(b) Windshield defogging and defrosting
20R008a
To remove interior fog on the windshield –
Push the windshield air flow button.
To remove frost or exterior fog on the windshield –
1. Turn the temperature selector knob at the maximum
temperature.
2. Push the windshield air flow button.
3. Turn the fan speed control knob to obtain a maximum air
flow.
4. Leave the air conditioning on–off button off.
When the windshield air flow button is pushed, air flows mainly
from the windshield vents and the OUTSIDE AIR mode is
automatically set. This setting clears the front view more
quickly.
If you want to return the setting to RECIRCULATED AIR mode,
push the air intake control button once again.
Pushing the windshield air flow button turns on the
defroster–linked air conditioning. This is to clean up the front
view more quickly.
Pushing the windshield air flow button once again returns the
air flow mode to the last one used.
CAUTION
Do not use the windshield air flow button during cooled
air operation in extremely humid weather. The
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.