heating Lexus HS250h 2012 Navigation Manual

AIR CONDITIONING
282
D
Switching between outside air and
recirculated air modes
U7003AASLY
Each time you push the air intake control
button, the mode changes in order from
the RECIRCULATED AIR mode to OUT-
SIDE AIR mode, then back to the RECIR-
CULATED AIR mode. Each indicator light
shows which mode is now selected.
1RECIRCULATED AIR mode
—If
quick circulation of cooled air is de-
sired, select this mode.
2OUTSIDE AIR mode — The system
will take fresh outside air into the ve-
hicle.
For normal use, it is the best to keep the air
intake control button set to OUTSIDE AIR
mode. If recirculated air is used during
heating, the windows will fog up more easi-
ly. (d) Defogging the windshield
The air conditioning system operates
automatically.
Recirculated air mode will automatically
switch to outside air mode. It is not pos-
sible to return to recirculated air mode
when the switch is on.
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 differ-
ence between the temperature of the
outside air and that of the windshield
can cause the outer surface of the
windshield to fog up, blocking your
vision.
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AIR CONDITIONING
284
INFORMATION
DUsing automatic mode
Fan speed is adjusted automatical-
ly according to the temperature
setting and ambient conditions.
As a result, the following may oc-
cur:
D Immediately after the button is
pushed, the fan may stop for a
while until warm or cool air is
ready to flow.
D Using air conditioning while driv-
ing mode is in Eco mode
The air conditioning system will be
controlled during Eco mode in or-
der to prioritize fuel consumption
as follows:
D Controls the engine speed or the
compressor operation to re-
strain the heating/cooling capa-
bility.
D Restrains the fan speed when
using in automatic setting.
When you want to improve the ef-
fectiveness of the air conditioning
system, operate as follows:
D Adjust the fan speed.
D Cancel the Eco mode.
The air conditioning setting during
Eco mode can be changed to the
same mode of normal driving by
your Lexus dealer. For details, see
“Customizable features” in section
6− 2 of the vehicle owner’s manual.
The fuel consumption perfor-
mance driving Eco mode drops
slightly after changing the air con-
ditioning setting.
D Using the system in recirculated
air mode
The windows will fog up more easi-
ly if recirculated air mode is used
for an extended period.
D Switching between outside air and
recirculated air modes
Recirculated air mode or outside
air mode may be automatically
switched to in accordance with the
temperature setting and the inside
temperature.
D Window defogger feature
Recirculated air mode may auto-
matically switch to outside air
mode in situations where the win-
dows need to be defogged.
D When outside air temperature is
below 32 _F(0 _C)
The cooling and dehumidification
function may not operate even
when “A/C” is on.
D When the indicator light on “A/C”
flashes
Select “A/C” to turn off the cooling
and dehumidification function and
turn it on again. There may be a
problem in the air conditioning
system if the indicator light contin-
ues to flash. Turn the air condition-
ing system off and have it in-
spected by your Lexus dealer.
D Automatic air intake change mode
In automatic mode, the system au-
tomatically switches between re-
circulated air and outside air
modes according to whether the
system detects harmful sub-
stances such as exhaust gas in the
air outside.
If you select automatic mode when
only the fans are operating, the air
conditioning system will turn on
automatically.
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