Lexus LS 460, User Manual

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5-3. Using the air conditioning system and defogger
LS460/LS460L_U (OM50D48U)
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Fogging up of the windows
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The windows will easily fog up when the humidity in the vehicle is high. Selecting
“A/C” on the operation screen on will dehumidify the air from the outlets and defog
the windshield effectively.
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If you turn “A/C” off, the windows may fog up more easily.
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The windows may fog up if the recirculated air mode is used.
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Outside/recirculated air mode
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When driving on dusty roads such as tunnels or in heavy traffic, set the outside/
recirculated air mode button to the recirculated air mode. This is effective in pre-
venting outside air from entering the vehicle interior. During cooling operation, set-
ting the recirculated air mode will also cool the vehicle interior effectively.
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Outside/recirculated air mode may automatically switch depending on the tem-
perature setting or the inside temperature.
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When the outside temperature exceeds 75°F (24°C) and the air conditioning sys-
tem is on
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In order to reduce the air conditioning power consumption, the air conditioning
system may switch to recirculated air mode automatically. This may also reduce
fuel consumption.
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Recirculated air mode is selected as a default mode when the engine switch is
turned on.
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It is possible to switch to outside air mode at any time by pressing .
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Automatic mode for air intake control
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.
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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
following may occur:
• Outside air mode does not switch to
(recirculated air) mode.
• The dehumidification function operates.
• The operation cancels after approximately 1 minute.
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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.