Lexus ES350 - Page 362

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ES350_300h_OM_OM33A60U_(U)
5-2. Using the air conditioning system and defogger
■ When the outside temperature exceeds 75°F (24°C) and the air conditioning sys-
tem is on
● 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.
● Recirculated air mode is selected as a default mode when the “START STOP
ENGINE” <“POWER”> switch is turned on.
● It is possible to switch to outside air mode at any time by pressing .
■ 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.
■ Micro dust and pollen filter
● 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.
● In rainy weather, the windows may fog up. Press .
● In extremely humid weather, the windows may fog up.
● The pollens are filtered out even if the micro dust and pollen filter is turned off.
■ Operation of the air conditioning system in Eco drive mode
In the Eco drive mode, the air conditioning system is controlled as follows to priori-
tize fuel efficiency:
● Engine speed and compressor operation controlled to restrict heating/cooling
capacity
● Fan speed restricted when automatic mode is selected
To improve air conditioning performance, perform the following operations:
● Adjust the fan speed
● Turn off Eco drive mode
■ When the outside temperature falls to nearly 32F (0C)
The dehumidification function may not operate even when is pressed.