2016 LEXUS RX450H LEXUS RX450h 2016 Owners Manual

4095-2. Using the air conditio ning system and defogger
5
Interior features
RX450h_U_OM0E013U ■
Switching between outside air and recirculated air modes
Press . The mode switches between (recirculated air mode), automatic and
(outside air mode) modes each time the button is pressed.
When the system is switched to automatic mode, the air conditioning system oper-
ates automatically.■
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 windows 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 turn off after a period of time.■
Windshield wiper de-icer (if equipped)
This feature is used to prevent ice fr om building up on the windshield and
wiper blades.
Select on the option control screen. When the windshield wiper de-icer is on , is displayed on the air condition-
ing control screen.
The windshield wiper de-icer will automati cally turn off after a period of time.Other functions

410 5-2. Using the air conditio ning system and defogger
RX450h_U_OM0E013U ■
Location of air outlets
The air outlets and air volume
changes according to the selected
air flow mode.
■
Adjusting the position of and opening and closing the air outlets
Direct air flow to the left or right, up or down
Turn the knob to open or close the ventAir outlets 
Front side 
Front center
Rear
1
2

4115-2. Using the air conditio ning system and defogger
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Interior features
RX450h_U_OM0E013U ■
Registering air conditioning settings to electronic keys ●
Unlocking the vehicle using an electronic key and turning the power switch to ON
mode will recall that key’s registered air conditioning settings. ●
When the power switch is turned off, the curr ent 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 th an one electronic key is in the vicinity or
if the smart access system with push-button start is used to unlock a passenger door. ●
The doors that can recall the air conditioni ng setting when unlocked using the smart
access system with push-b utton start can be changed.
* For details, contact your Lexus
dealer.
* : The doors that can recall the driving positi on 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 warm or cool air is ready to flow immediately
after the “AUTO” button is pr essed or “AUTO” is selected.■
Operation of S-FLOW mode
In automatic mode, S-FLOW mode will be turned off if a rear door has been opened and
closed. To activate S-FLOW mode again, press . ■
Using the voice command system
Air conditioning system can be operated usin g voice commands. For details, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”. ■
When the outside temperature exceeds 75  F (24  C) and the air conditioning system
is on ●
In order to reduce the air conditioning po wer consumption, the ai r 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 power switch is turned to
ON mode. ●
It is possible to switch to outside air mode at any time by pressing the outside/recircu-
lated air mode button. ■
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.■
Fogging up of the windows ●
The windows will easily fog up when the humidi ty in the vehicle is high. Selecting “A/C”
will dehumidify the air from the outlet s 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.

412 5-2. Using the air conditio ning system and defogger
RX450h_U_OM0E013U ■
Windshield fog detection function
When automatic mode is se t, the humidity sensor (  P. 413) detects fog on the wind-
shield and controls the air conditioning system to prevent fog. ■
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. ■
When the outside temperature is low
The dehumidification function may not operate even when “A/C” is selected. ■
Operation of the air conditioning system in Eco drive mode ●
In the Eco drive mode, the air conditioning sy stem 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 performa nce, perform the following operations
• Adjust the fan speed
• Turn off Eco drive mode ■
Ventilation and air conditioning odors ●
To let fresh air in, set the air conditio ning 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. 5 0 1 ■
Customization
Some functions can be customized (  P. 6 0 7 )

4135-2. Using the air conditio ning system and defogger
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Interior features
RX450h_U_OM0E013U WA R N I N G ■
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 wi ndshield or to the si de of the front pillars
when the windshield wiper de-icer is on. (if equipped)
NOTICE ■
Humidity sensor
■
To prevent 12-volt battery discharge
Do not leave the air conditioning system on longer than necessary when the hybrid sys-
tem is off. ●
Do not place anything on the instrument
panel which may cover th e air outlets. Other-
wise, air flow may be obstructed, preventing
the windshield defoggers from defogging.
In order to detect fog on the windshield, a sen-
sor which monitors the temperature of the
windshield, the surround humidity, etc. is
installed. (  P. 4 1 2 )
Follow these points to avoid damaging the sen-
sor: ●
Do not disassemble the sensor ●
Do not spray the glass cleaner on the sensor
or subject it to strong impacts ●
Do not stick anything on the sensor

414 5-2. Using the air conditio ning system and defogger
RX450h_U_OM0E013UHeated steering wheel 
/seat heaters/seat ventila-
tors
 : If equippedHeated steering wheel and seat heater s heat the side grips of the steering
wheel and seats, respectively. Seat ventilators maintain good airflow by blow-
ing air from the seats. WA R N I N G ●
Care should be taken to prevent injury if anyone in the following categories comes in
contact with the steering wheel an d 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 (s leeping 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 uneven surface on the seat and do not stick
sharp objects (needles, nails, etc.) into the seat. ●
To prevent 12-volt battery discharge, do not use the functions when the hybrid system
is off.

4155-2. Using the air conditio ning system and defogger
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Interior features
RX450h_U_OM0E013U Turns the heated steering wheel on/off The indicator light comes on when the
heated steering wheel is operating. ■
Operation condition
The heated steering wheel can be used when the power switch is in ON mode.■
Timer
The heated steering wheel will automati cally turn off after about 30 minutes.
When any switch is pressed, the system is set to automatic mode and the
“AUTO” indicator (green) lights up.
Each time the switch is pressed, the
operation condition changes as follows.
Hi (3 segments lit)  Mid (2 segments
lit)  Lo (1 segment lit)  OffThe level indicator (amber) lights up
during operation.
■
Operation condition
The front seat heaters can be used when the power switch is in ON mode. ■
Customization
Some functions can be customized. (  P. 6 0 7 )Heated steering wheel
Front seat heaters
Level
indicator“A U T O ”
indicator

416 5-2. Using the air conditio ning system and defogger
RX450h_U_OM0E013U Each time the switch is pressed, the
operation condition changes as follows.
Hi (3 segments lit)  Mid (2 segments
lit)  Lo (1 segment lit)  OffThe level indicator (amber) lights up
during operation. ■
Operation condition
The rear seat heaters can be used wh en the power switch is in ON mode.
When any switch is pressed, the system
is set to automatic mode and the
“AUTO” indicator (green) lights up.
Each time the switch is pressed, the
operation condition changes as follows.
Hi (3 segments lit)  Mid (2 segments
lit)  Lo (1 segment lit)  OffThe level indicator (g reen) lights up dur-
ing operation. ■
Operation condition
The seat ventilators can be used when the power switch is in ON mode.■
Customization
Some functions can be customized. (  P. 6 0 7 )Rear seat heaters (if equipped) Level indicator
Seat ventilators Level
indicator“A U T O ”
indicator