Lexus 2013 GS 350 Owner's Manual page 332

5-2. Using the air conditioning system and defogger
When the outside temperature exceeds 75°F (24°C) and the air conditioning sys-
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tem is on
In order to reduce the air conditioning power consumption, the air conditioning
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system may switch to recirculated air mode automatically. This may also reduce
fuel consumption.
Recirculated air mode is selected as a default mode when the engine switch is
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turned on.
It is possible to switch to outside air mode at any time by pressing
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Automatic mode for air intake control
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In automatic mode, the system detects exhaust gas and other pollutants and auto-
matically switches between outside air and recirculated air modes.
When the dehumidification function is off, and the fan is operating, turning automatic
mode on will activate the dehumidification function.
Micro dust and pollen filter
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In order to prevent the windshield from fogging up when the outside air is cold, the
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following may occur:
• Outside air mode does not switch to
• The dehumidification function operates.
• The operation cancels after approximately 1 minute.
In rainy weather, the windows may fog up. Press
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In extremely humid weather, the windows may fog up.
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The pollens are filtered out even if the micro dust and pollen filter is turned off.
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When the outside temperature falls to nearly 32 F (0 C)
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The dehumidification function may not operate even when
GS350_U (OM30C34U)
(recirculated air) mode.
.
I n f o r ma t i o n P r o v i d e d b y :
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is selected.