Lexus 2012 RX450h Owner's Manual page 418

3-2. Using the air conditioning system and defogger
Operation of the air conditioning system in Eco drive mode (RX450h)
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In Eco drive mode, the air conditioning system is controlled as follows to prioritize
fuel efficiency:
Engine speed and compressor operation controlled to restrict heating/cooling
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capacity
Fan speed restricted when automatic mode is selected
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To improve air conditioning performance, perform the following operations:
Adjust the fan speed
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Turn off Eco drive mode
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Customization
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The air conditioning control of Eco drive mode can be changed to the same setting
as that used in normal drive mode.
(Customizable features P. 980)
Air conditioning system settings
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RX350: When the "ENGINE START STOP" switch is turned on, the air condi-
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tioning system settings will be set to those that were in use the last time the
"ENGINE START STOP" switch was turned off.
RX450h: When the "POWER" switch is turned on, the air conditioning system
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settings will be set to those that were in use the last time the "POWER" switch
was turned off.
Air conditioning system settings are memorized individually on each electronic
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key, so the settings reproduced will be specific to the key that is used.
This feature is customizable at your Lexus dealer.
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Using automatic mode
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Fan speed is adjusted automatically according to the temperature setting and ambi-
ent conditions. As a result, the following may occur:
Immediately after the button is pressed, the fan may stop for a while until warm or
cool air is ready to flow.
Using the system in recirculated air mode
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The windows will fog up more easily if recirculated air mode is used for an extended
period.
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