Lexus ES300h - Page 391

ES300h_OM_OM33B71U_(U)
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6-1. Using the air conditioning system and defogger
6
Interior features
■ Fogging up of the windows
● The windows will easily fog up when the humidity in the vehicle is high. Selecting “A/C”
on the option control screen will dehumidify the air from the outlets and defog the
windshield effectively.
● If you turn “A/C” off, the windows may fog up more easily.
● The windows may fog up if the recirculated air mode is used.
■ Windshield fog detection function (if equipped)
When automatic mode is set, the humidity sensor (P. 393) detects fog on the wind-
shield and controls the air conditioning system to prevent fog.
■ Outside/recirculated air mode
● When driving on dusty roads, in tunnels, or in heavy traffic, set to the
recirculated air mode. This is effective in preventing outside air from entering the vehi-
cle interior. During cooling operation, setting the recirculated air mode will also cool
the vehicle interior effectively.
● Outside/recirculated air mode may automatically switch depending on the tempera-
ture setting or the inside temperature.
■ When the outside temperature is low
The dehumidification function may not operate even when “A/C” on the option control
screen is selected.
■ Automatic mode for air intake control
In automatic mode, the system detects exhaust gas and other pollutants and automati-
cally 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 fol-
lowing 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 pollen is 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 prioritize
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