2014 Lexus ES300h Warranty and Services Guide / Owner's Manual (OM33A60U)

ES350_300h_OM_OM33A60U_(U)
3615-2. Using the air conditioning system and defogger
5
Interior features
■Registering air conditioning settings to electronic keys
●Unlocking the vehicle using an electronic key and turning the “START STOP
ENGINE” <“POWER”> switch to IGNITION ON mode will recall that key’s
registered air conditioning settings.
●When the “START STOP ENGINE” <“POWER”> is turned off, the current air con-
ditioning settings will automatically be re gistered to the electronic key that was
used to unlock the vehicle.
The system may not operate correctly if more than one electronic key is in the vicinity
or if the smart access system with push-button start is used to unlock a passenger
door.
Settings for the electronic key and th e corresponding door can be changed.
Contact your Lexus dealer.
■Using automatic mode
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 immedi-
ately after is pressed.
■Fogging up of the windows
●The windows will easily fog up when the humidity in the vehicle is high. Selecting on will dehumidify the air from the outlets and defog the windshield effec-
tively.
●If you turn 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. 364) detects fog on the
windshield and controls the air conditioning system to prevent fog.
■Outside/recirculated air mode
●When driving on dusty roads such as tunn els or in heavy traffic, set the outside/
recirculated air mode button to the recirculated air mode. This is effective in pre-
venting outside air from entering the vehicl e interior. During cooling operation, set-
ting the recirculated air mode will also cool the vehicle interior effectively.
●Outside/recirculated air mode may automatically switch depending on the tem-
perature setting or the inside temperature.

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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”> swit ch 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 ex haust 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 an d 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 mi cro 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 co ntrolled to restrict heating/cooling
capacity
●Fan speed restricted when automatic mode is selected
To improve air conditioning performanc e, 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.

ES350_300h_OM_OM33A60U_(U)
3635-2. Using the air conditioning system and defogger
5
Interior features
■Air conditioning odors
●During use, various odors from inside an d outside the vehicle may enter into and
accumulate in the air condit ioning system. This may then cause odor to be emitted
from the vents.
●To reduce potential odors from occurring:
• It is recommended that the air conditio ning system be set to outside air mode
prior to turning the vehicle off.
• The start timing of the blower may be delayed for a short period of time immedi-
ately after the air conditioning system is started in automatic mode.
■Air conditioning filter
 P. 7 1 7
■Customization
Settings (e.g. exhaust gas sensor sensitivity) can be changed.
(Customizable features P. 8 6 3 )
CAUTION
■To prevent the windshield from fogging up
Do not use during cool air operation in extremely humid weather. The differ-
ence between the temperature of the outs ide air and that of the windshield can
cause the outer surface of the windshield to fog up, blocking your vision.

364
ES350_300h_OM_OM33A60U_(U)
5-2. Using the air conditioning system and defogger
NOTICE
■Humidity sensor (if equipped)
■To prevent 12-volt battery discharge
Do not leave the air conditioning system on longer than necessary when the
engine is off.
In order to detect fog on the windshield, a
sensor which monitors the temperature of
the windshield, the surround humidity, etc. is
installed. (P. 3 6 1 )
Follow these points to avoid damaging the
sensor:
●Do not disassemble the sensor
●Do not spray the glass cleaner on the sen-
sor or subject it to strong impacts
●Do not stick anything on the sensor

365
ES350_300h_OM_OM33A60U_(U)
5-2. Using the air conditioning system and defogger
5
Interior features
Automatic air conditioning system (without a navi-
gation system or the Lexus Display Audio system)
Vehicles with a navigation system
Owners of models equipped with a na vigation system should refer to the
“Navigation System Owner’s Manual”.
Vehicles with the Lexus Display Audio system
 P. 3 5 3
Air outlets and fan speed are automatica lly adjusted according to the
temperature setting.

366
ES350_300h_OM_OM33A60U_(U)
5-2. Using the air conditioning system and defogger
Driver’s side temperature dis-
play
Airflow display
Fan speed display
Outside temperature
Passenger’s side temperature
display
Air outlet selector button
Cooling and dehumidification
function on/off button
DUAL mode button Passenger’s side temperature
control button
Micro dust and pollen filter but-
ton
Outside air or recirculated
mode button
Off button
Driver’s side temperature con-
trol button
Automatic mode button
Fan speed control button
Windshield defogger button1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

ES350_300h_OM_OM33A60U_(U)
3675-2. Using the air conditioning system and defogger
5
Interior features
Press .
The dehumidification function begins to operate. Air outlets and fan speed are
automatically adjusted according to the temperature setting and humidity.
Press to switch to automatic air intake mode.
The air conditioning system automatically switches between outside air and recir-
culated air modes.
Press “” on to increase the temperature and “ ” to decrease
the temperature.
When is selected (the indicator on is on) or the passenger’s side tem-
perature control button is pressed, the temperature for the driver and passenger
seats can be adjusted separately.
Using the automatic air conditioning system
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2
3

368
ES350_300h_OM_OM33A60U_(U)
5-2. Using the air conditioning system and defogger
To adjust the fan speed, select on to increase the fan speed
and to decrease the fan speed.
Press to turn the fan off.
To adjust the temperature setting, press “ ” on to increase the
temperature and “ ” to decrease the temperature.
When is selected (the indicator on is on) or the passenger’s side tem-
perature control button is pressed, the temperature for the driver and passenger
seats can be adjusted separately.
To change the air outlets, press .
The air outlets used are switched each time the switch is pressed.
Adjusting the settings manually
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2
3