Lexus LS 500h Manual page 330

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330
5-3. Using the air conditioning system and defogger
off after a while.
In order to prevent the windshield from fog-
ging up when the outside air is cold, the
dehumidification function may operate or
the outside/recirculated air mode may not
switch to
Pollen is filtered even if the micro dust and
pollen filter is turned off.
WARNING
To prevent burns (vehicles with wind-
shield wiper de-icer)
Do not touch the glass at lower part of
the windshield or to the side of the front
pillars when the windshield wiper de-icer
is on.
Using automatic mode
1
Press the automatic mode switch or
select "AUTO" on the sub function
menu. (P.326)
2
Press the outside/recirculated air
mode switch to switch to automatic
air intake mode.
The air conditioning system automatically
switches between outside air and recircu-
lated air modes.
3
Adjust the temperature setting.
4
To stop the operation, press the off
switch or select "OFF" on the sub
function menu. (P.326)
If the fan speed setting or air flow modes
are operated, the automatic mode indica-
tor goes off. However, automatic mode for
functions other than that operated is main-
tained.
Using automatic mode
Fan speed is adjusted automatically accord-
ing to the temperature setting and the
ambient conditions.
Therefore, the fan may stop for a while until
LS500h_OM_(U)_1810
(recirculated air) mode.
warm or cool air is ready to flow immedi-
ately after the automatic mode switch is
pressed or "AUTO" is selected.
Cool air may blow around the upper body
even when the heater is on due to sunlight.
Windshield fog detection function
When automatic mode is set, the humidity
sensor detects fog on the windshield and
controls the air conditioning system to pre-
vent fog.
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.
NOTICE
Humidity sensor
In order to detect fog on the windshield,
a sensor which monitors the temperature
of the windshield, the surround humidity,
etc. is installed.
Follow these points to avoid damaging
the sensor:
Do not disassemble the sensor
Do not spray glass cleaner on the sen-
sor or subject it to strong impacts
Do not stick anything on the sensor
S-FLOW mode
In S-FLOW mode, priority for the air-

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