Lexus IS300h 2017 Owner's Manual
Page 471 of 692
4716-2. Using the air conditioning system
6
Interior features
IS300h_EE(OM53D89E)
With a 10.3-inch display 
Adjust the left-hand side temperature setting 
Adjust the fan speed setting
Select the air flow mode 
Adjust the right-hand side temperature setting 
Display the option control screen ( P. 472) 
Select to set automatic mode on/off
Select to set cooling and de humidification function on/off 
Adjust the temperature fo r driver and passenger seats separately (“DUAL” 
mode) ( P. 473) 
Select to change the fan speed setti ng during the automatic mode opera- 
tion. ( P. 475) 
Adjust the temperature setting 
(With “DUAL” mode) (Without “DUAL” mode)
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4726-2. Using the air conditioning system
IS300h_EE(OM53D89E)
■Option control screen 
Select   on the air conditioning co ntrol screen to display the option 
control screen. The functions  can be switched on and off.
■Side display operation screen (Vehicles with a 10.3-inch display)
With a Lexus Display Audio With a 10.3-inch display 
Removing pollen from the ai r (Pollen removal mode) (P. 474)1
With “DUAL” modeWithout “DUAL” mode 
Select the air flow mode 
Adjust the left-hand side temperature setting
Adjust the fan speed setting
Adjust the right-hand side temperature setting
Select to set auto mode on/off
Select to set cooling and de humidification function on/off 
Adjust the temperature fo r driver and passenger seats separately (“DUAL” 
mode) ( P. 473) 
Adjust the temperature setting
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4736-2. Using the air conditioning system
6
Interior features
IS300h_EE(OM53D89E)
Press  , or select “AUTO” on the air conditioning control screen. 
Adjust the temperature setting. 
To stop the operation, press  .
■Automatic mode indicator 
If the fan speed setting or air flow  modes are operated, the automatic mode 
indicator goes off. However, automati c mode for functions other than that 
operated is maintained.
■Adjusting the temperature for driv er and passenger seats separately 
(“DUAL” mode) (if equipped) 
To turn on the “DUAL” mode, perfor m any of the following procedures:
●Press   or select “DUAL” on the air conditioning control screen.
●Select “DUAL” on the side display operation screen. (Vehicles with a 10.3- 
inch display)
●Adjust the passenger’s side temperature setting.
The indicator comes on when the “DUAL” mode is on. 
While in “DUAL” mode, the temperature of the rear air outlets is set at the right- hand side temperature setting.
Using automatic mode
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Page 474 of 692
4746-2. Using the air conditioning system
IS300h_EE(OM53D89E)
■Switching between outside air and recirculated air modes 
Press   to change to recirculated air mode. 
Press   to change to outside air mode.
The indicator above the selected button comes on.
■Pollen removal mode (if equipped) 
Pollen is removed from the air and the ai r flows to the upper part of the body. 
Select  on the option control screen.
When the pollen removal mode is on,    is displayed on the air conditioning 
control screen. 
In order to prevent the windshield from fo gging up when the outside air is cold, the 
dehumidification function may operate. 
The pollens are filtered out even if th e pollen removal mode is turned off.
■Defogging the windshield 
Defoggers are used to defog the windshield and front side windows. 
Press .
Set the outside/recirculated air mode button to outside air mode if the recirculated 
air mode is used. (It may switch automatically.) 
To defog the windshield and the side wind ows early, turn the air flow and tempera- ture up. 
To return to the previous mode, press   again when the windshield is 
defogged.
■Defogging the rear window and outside rear view mirrors 
Defoggers are used to defog the rear window, and to remove raindrops, dew 
and frost from the outside rear view mirrors. 
Press .
The defoggers will automatically tu rn off after a period of time.
Other functions 
Page 475 of 692
4756-2. Using the air conditioning system
6
Interior features
IS300h_EE(OM53D89E)
■Windshield wiper de-icer (if equipped) 
This feature is used to prevent ice fr om building up on the windshield and 
wiper blades. 
Turns on/off.
The indicator comes on when the windshield wiper de-icer is on. 
The windshield de-icer will automati- 
cally turn off after a period of time.
■Blower customization (if equipped) 
Fan speed setting during the automati c mode operation can be customized. 
To change the fan speed setting mode, select “FAST/ECO” on the air condi- 
tioning control screen.
Each time “FAST/ECO” is selected, the  fan speed setting mode changes as fol- 
lows. 
“NORMAL”   “ECO” “FAST” “NORMAL” 
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4766-2. Using the air conditioning system
IS300h_EE(OM53D89E)
■Location of air outlets 
The air outlets and air volume 
changes according to the selected
airflow mode.
■Adjusting the position of and opening and closing the air outlets 
Direct air flow to the le ft or right, up or down
To close the vent, move the knob to the most outside position. (rear outlets)
Turn the knob to open or close the vent
Air outlets
FrontRear
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4776-2. Using the air conditioning system
6
Interior features
IS300h_EE(OM53D89E)
■Registering air conditioning settings to electronic keys (vehicles with driving position 
memory)
●Unlocking the vehicle using an electronic  key and turning the power switch to ON mode will recall that ke y’s registered air conditioning settings.
●When the power switch is turned off, the current air conditioning settings will automati- 
cally be registered 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 entry & start system is used to unlock a passenger door.
●The doors that can recall the air conditioning setting when unlocked using the smart entry & start system can be changed.* For details, contact any authorized Lexus 
retailer or Lexus authorized re pairer, or any reliable repairer.
*: The doors that can recall the driving position memory are changed at the same time.
■Using automatic mode 
Fan speed is adjusted automatically accordin g to the temperature setting and the ambi- 
ent conditions. 
Therefore, the fan may stop for a while until wa rm or cool air is ready to flow immediately 
after   is pressed or “AUTO” is selected.
■Fogging up of the windows 
The windows will easily fog up when the hu midity in the vehicle is high. Turning  
(“A/C”) on 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.
■Outside/recirculated air mode
●When driving on dusty roads such as tunnels or in heavy traffic, set the outside/recircu- 
lated air mode button to the recirculated ai r mode. This is effective in preventing out- side air from entering the vehicle interi or. During cooling operation, setting the 
recirculated air mode will also cool the vehicle interior effectively.
●Outside/recirculated air mode may automa tically switch depending on the tempera- 
ture setting or the inside temperature.
■Operation of the air conditioni ng system in Eco drive mode 
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 capac-
ity
●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 
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4786-2. Using the air conditioning system
IS300h_EE(OM53D89E)
■Ventilation and air conditioning odors
●To let fresh air in, set the air conditioning system to the outside air mode.
●During use, various odors from inside and outside the vehicle may enter into and accu- 
mulate in the air conditioning system. This  may then cause odor to be emitted from the 
vents.
●To reduce potential odors from occurring: 
• It is recommended that the air conditioning system be set to outside air mode prior 
to turning the vehicle off. • The start timing of the blower may be dela yed for a short period of time immediately 
after the air conditioning system  is started in automatic mode.
■Air conditioning filter 
 P. 547
■Customization 
Settings (e.g. A/C Auto switch  operation) can be changed.  (Customizable features:  P. 663)
WARNING
■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 outside air and that of the windshield can cause 
the outer surface of the windshield  to fog up, blocking your vision.
■To prevent burns
●Do not touch the rear view mirror surfaces when the outside rear view mirror defog- 
gers are on.
●Do not touch the glass at lower  part of the windshield or to the side of the front pillars 
when the windshield wiper de-icer is on.
NOTICE
■To prevent 12-vol t battery discharge 
Do not leave the air conditioni ng system on longer than necessary when the hybrid sys- tem is off.
●Do not place anything on the instrumentpanel which may cover th e air outlets. Other- 
wise, air flow may be obstructed, preventing
the windshield defoggers from defogging. 
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Interior features
IS300h_EE(OM53D89E)
Turn the heated steering wheel on/off
The indicator light comes on when the heated steering wheel is operating.
Heated steering wheel/seat heaters/seat ventila- 
tors 
: If equipped
Heated steering wheel and seat heaters  heat the side grips of the steering 
wheel and seats, respectively. Seat vent ilators maintain good airflow by blow- 
ing air from the seats.
WARNING
●Care should be taken to prev ent injury if anyone in the following categories comes in contact with the steering wheel and seats when the heater is on: 
• Babies, small children, the elderly,  the sick and the physically challenged 
• Persons with sensitive skin • Persons who are fatigued 
• Persons who have taken alcohol or drugs that induce sleep (sleeping drugs, cold
remedies, etc.)
●Observe the following precautions to  prevent minor burns or overheating,  
• Do not cover the seat with a blanket or  cushion when using the seat heater. • Do not use seat heater more than necessary. 
NOTICE
●Do not put heavy objects that have an unev en surface on the seat and do not stick sharp objects (needles, nails, etc.) into the seat.
●To prevent 12-volt battery discharge, do no t use the functions when the hybrid system 
is off.
Heated steering wheel 
Page 480 of 692
4806-2. Using the air conditioning system
IS300h_EE(OM53D89E)
●The heated steering wheel can be used when the power switch is in ON mode.
●The heated steering wheel will automatically turn off after about 30 minutes.
Each time the switch is pressed, the 
intensity of the seat heater changes and
the level indicator lights (amber) light
as follows: 
Hi (3 segments lit)   Mid (2 segments 
lit)   Lo (1 segment lit)  Off
■The seat heaters can be used when 
The power switch is in ON mode.
■Seat heater timer control  
To enable seat heater timer control, press and hold the driver and front passenger seat heater switches at the same time until a buzzer  sounds once. If a seat heater is turned on 
while seat heater timer control is enabled,  the intensity of the seat heater will automati- 
cally change from Hi MidLo.  
The timing of the change in seat heater intensity differs depending on the temperature 
inside the cabin, etc. when the seat heater is operating. 
To disable seat heater timer control, press and hold the driver and front passenger seat heater switches at the same time until a buzzer sounds twice.
Each time the switch is pressed, the 
intensity of the seat ventilator changes
and the level indicator lights (green)
light as follows: 
Hi (3 segments lit)   Mid (2 segments 
lit)   Lo (1 segment lit)  Off
The seat ventilators can be used when the power switch is in ON mode.
Seat heaters
Type A Type B
Seat ventilators