316
1. AIR CONDITIONING SYSTEM OPERATION
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In the Eco drive mode, the air condi-
tioning system is controlled as follows
to prioritize fuel efficiency:
• Engine speed and compressor opera-
tion controlled to restrict heating/
cooling capacity
• Fan speed restricted when automatic
mode is selected
To improve air conditioning perfor-
mance, perform the following opera-
tions:
• Adjust the fan speed and temperature
• Turn off Eco drive mode (refer to
“Owner’s Manual”.)
• Customize the air conditioning con-
trol of Eco drive mode. (refer to
“Owner’s Manual”.)
Customization
• The air conditioning control restric-
tion of Eco drive mode can be
changed to the same setting as that
used in normal drive mode. For
details, refer to “Owner’s Manual”.
• Changing the air conditioning restric-
tion will slightly reduce the Eco drive
mode’s fuel efficiency when com-
pared to before the change was made.Unlocking the vehicle using an elec-
tronic key and turning the “POWER”
switch to ON mode will recall that
key’s registered air conditioning set-
tings.
When the “POWER” switch is turned
off, the current air conditioning settings
will automatically be registered to the
electronic key that was used to unlock
the vehicle. The system may not oper-
ate correctly if more than 1 electronic
key is in the vicinity or if the smart
entry & start system is used to unlock a
passenger door.
Settings for the electronic key and the
corresponding door can be changed.
Contact your Lexus dealer.
AIR CONDITIONING
SYSTEM OPERATING HINTS
OPERATION OF THE AIR
CONDITIONING SYSTEM IN
ECO DRIVE MODE
REGISTERING AIR
CONDITIONING SETTINGS
TO ELECTRONIC KEYS
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1. AIR CONDITIONING SYSTEM OPERATION
6
AIR CONDITIONING
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Fan speed is adjusted automatically
according to the temperature setting
and the ambient conditions.
Therefore, the fan may stop for a while
until warm or cool air is ready to flow
immediately after “AUTO” is pressed.
The windows will easily fog up when
the humidity in the vehicle is high.
Selecting “A/C” on will dehumidify the
air from the outlets and defog the wind-
shield effectively.
If “A/C” is switched off, the windows
may fog up more easily.
The windows may fog up if the recircu-
lated air mode is used.When automatic mode is set, the
humidity sensor (see page 319) detects
fog on the windshield and controls the
air conditioning system to prevent fog.
When driving on dusty roads such as
tunnels or in heavy traffic, set the out-
side/recirculated air mode button to the
recirculated air mode. This is effective
in preventing outside air from entering
the vehicle 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
temperature setting or the inside tem-
perature.
USING AUTOMATIC MODE
FOGGING UP OF THE
WINDOWS
CAUTION
To prevent the windshield from fog-
ging up
• Do not use the windshield air flow
button during cool air operation in
extremely humid weather. The dif-
ference between the temperature of
the outside air and that of the wind-
shield can cause the outer surface of
the windshield to fog up, blocking
your vision.
WINDSHIELD FOG
DETECTION FUNCTION
OUTSIDE/RECIRCULATED
AIR MODE
