Page 393 of 624

3936-1. Using the air conditioning system and defogger
6
Interior features
Outside heat exchanger
●In the following situations the gas-
oline engine may operate in order
to extract heat from the engine
coolant via the heater even in EV
mode.• The outside temperature is
approximately 14°F (-10°C) or low
• is operating
■Water droplets dur ing air condi-
tioning operation
The outside heat exchanger, accu-
mulator and air conditioning piping
may incur condensation or frost may
form.
During or after the air conditioning
operation, water droplets may fall
from the vehicle. However, it is not a
malfunction.
Accumulator
Outside heat exchanger
■Fogging up of the windows
●The windows will easily fog up
when the humidity in the vehicle is
high. Turning “A/C ” switch on will
dehumidify the air from the outlets
and defog the windshield effec-
tively.
●If you turn “A/C” switch off, the
windows may fog up more easily.
●The windows may fog up if the
recirculated air mode is used.
■While using “My Room Mode”
●It may not be possible to obtain
the intended defogging perfor-
mance even if is pressed.
If the windows need to be
defogged before driving, stop
charging power and then press .
●When the outside temperature is
low, heating may feel insufficient
due to restricted operation of the
air conditioning.
Heating cannot be performed
when it is 14°F (-
10°C) or less as
the gasoline engine cannot be
started during “My Room Mode”. If
heating is desired, stop charging
and remove the AC charging
cable from the vehicle.
■When driving on dusty roads
Close all windows. If dust thrown up
by the vehicle is still drawn into the
vehicle after closing the windows, it
is recommended that the air intake
mode be set to outside air mode
and the fan speed to any setting
except off.
■Outside/recirculated air mode
●Setting to the recirculated air
mode temporarily is recom-
mended in preventing dirty air
A
A
B
Page 394 of 624

3946-1. Using the air conditioning system and defogger
from entering the vehicle interior
and helping to cool the vehicle
when the outside air temperature
is high.
●Outside/recirculated air mode may
automatically switch depending on
the temperature setting or the
inside temperature.
■When the outside temperature
exceeds 75°F (24°C) and the air
conditioning system is on
●In order to reduce the air condi-
tioning power consumption, the air
conditioning system may switch to
recirculated air mode automati-
cally. This may a lso reduce fuel
consumption.
●Recirculated air mode is selected
as a default mode when the power
switch is turned to ON.
●It is possible to switch to outside
air mode at any time by pressing
the outside/recirculated air mode
switch.
■Operation of the air condition-
ing system in Eco drive mode
●In Eco drive mode, the air condi-
tioning system is controlled as fol-
lows to prioritize fuel efficiency:
• Engine speed and compressor
operation controlled to restrict
heating/cooling capacity
• Fan speed restr icted when auto-
matic mode is selected
●To improve air conditioning perfor-
mance, perform the following
operations:
• Turn off Eco drive mode ( P.372)
• Turn off Eco air conditioning mode
●When the driving mode is set to
Eco driving mode, the Eco air con-
ditioning mode will be turned on
automatically. Even in this case,
the Eco air conditioning mode can
be turned off by pressing the Eco
air conditioning mode switch.
■When the outside temperature
falls to nearly 32°F (0°C)
The dehumidification function may not operate even when “A/C” switch
is pressed.
■Ventilation and air conditioning
odors
●To let fresh air in, set the air condi-
tioning system to the outside air
mode.
●During use, various odors from
inside and outside the vehicle may
enter into and accumulate 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 out-
side air mode prior to turning the
vehicle off.
• The start timing of the blower may be delayed for a short period of
time immediately after the air con-
ditioning system is started in auto-
matic mode.
●When parking, the system auto-
matically switches to outside air
mode to encourage better air cir-
culation throughout the vehicle,
helping to reduce odors that occur
when starting the vehicle.
■Air conditioning filter
P.477
■Air conditioning system refrig-
erant
●A label regarding the refrigerant of
the air conditioning system is
attached to the h ood at the loca-
tion shown in the following illustra-
tion.
●The meaning of each symbol on
Page 395 of 624

3956-1. Using the air conditioning system and defogger
6
Interior features
the label are as follows:
■Noise from air conditioning sys-
tem
Approximately 90 seconds after the
power switch turned to OFF, you
may hear sound coming from air
conditioning system. This is the
sound of a air conditioning system
initialize and, it doe s not indicate a
malfunction.
■Customization
Some functions can be customized.
(Customizable features: P.576)
1 Press the “AUTO” switch.
The dehumidification function
begins to operate. Air outlets and
fan speed are automatically
adjusted according to the tempera-
ture setting and humidity.
2 Adjust the temperature set-
ting.
Caution
Air conditioning system
Air conditioning system
lubricant type
Requires registered
technician to service air
conditioning system
Flammable refrigerant
WARNING
■Cautions for using “My Room
Mode”
Do not leave children, people who
need assistance, or pets inside
the vehicle. The system may turn
off automatically and the interior
temperature may become high or
low, resulting in heat stroke, dehy-
dration or hypothermia. Failure to
do so may result in death or seri-
ous injury.
■To prevent the windshield
from fogging up
Do not use the windshield defog-
ger switch during cool air opera-
tion in extremely humid weather.
The difference between the tem-
perature of the outside air and
that of the windshield can cause
the outer surface of the wind-
shield to fog up, blocking your
vision.
■When the outside rear view
mirror defoggers are operat-
ing
Do not touch the rear view mirror
surfaces when the outside rear
view mirror def oggers are on.
NOTICE
■To prevent 12-volt battery dis-
charge
Do not leave the air conditioning
system on longer than necessary
when the hybrid system is off.
■When repairing/replacing
parts of the air conditioning
system
Have repair/replacement per-
formed by your To yota dealer.
When a part of the air condition-
ing system, such as the evapora-
tor, is to be repl aced, it must be
replaced with a new one.
Using automatic mode
Page 396 of 624

3966-1. Using the air conditioning system and defogger
3To stop the operation, press
the “OFF” switch.
If the fan speed setting or air
flow modes are operated, the
automatic mode indicator goes
off. However, automatic mode
for functions other than that
operated is maintained.
■Using automatic mode
Fan speed is adjusted automati-
cally 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 the auto-
matic mode switch is pressed.
■Windshield fog d etection func-
tion
When automatic mode is set, the
humidity sensor detects fog on the
windshield and controls the air con-
ditioning system to prevent fog.
This function automatically con-
trols the air conditioning airflow
so that priority is given to the
front seats. When the front pas-
senger seat is not occupied, air-
flow may switch to only the
driver’s seat. Unnecessary air
conditioning is suppressed, con-
tributing to increased fuel effi-
ciency.
Front seat concentrated airflow
mode operates in the following
situations.
No passengers are detected
in the rear seats
The windshield defogger is
not operating
While operating, illumi-
nates.
■Manually turning front seat
concentrated airflow mode
on/off
In front seat concentrated air-
flow mode, directing airflow to
the front seats only and to all
seats can be switched via switch
operation. When the mode has
been switched manually, auto-
matic airflow control stops oper-
ating.
Press on the air condition-
ing operation panel and switch
the airflow.
Indicator illuminated: Airflow
to the front seats only
Indicator off: Airflow to all the
seats
■Operation of automatic airflow
control
●In order to maintain a comfortable
interior, airflow may be directed to
seats without passengers immedi-
ately after the hybrid system is
started and at other times depend-
ing on the outside temperature.
●After the hybrid system is started,
if passengers move around inside
or enter/exit the vehicle, the sys-
tem cannot accura tely detect the
presence of passengers and auto-
matic airflow co ntrol will not oper-
ate.
Front seat concentrated
airflow mode (S-FLOW)
Page 397 of 624

3976-1. Using the air conditioning system and defogger
6
Interior features
■Operation of manual airflow
control
Even if the function is manually
switched to directing airflow to only
the front seats, whe n a rear seat is
occupied, it may automatically direct
airflow to all seats.
■To return to auto matic airflow
control
1 With the indicator off, turn the
power switch off.
2 After 60 minutes or more elapse,
turn the power switch to ON.
This feature is used to prevent
ice from building up on the wind-
shield and wiper blades.
Press the switch to turn the sys-
tem on/off.
The indicator comes on when the
system is on.
The windshield wiper de-icer will
automatically turn o ff after a period
of time.
■Location of air outlets
The air outlets and air volume
change according to the
selected air flow mode.
■Adjusting the air flow direc-
tion and opening/closing
the air outlets
Front
1 Direct air flow to the left or
right, up or down
2 Open the vent
*
3Close the vent*
*: If equipped (cent er air outlets
only)
Windshield wiper de-icer
(if equipped)
WARNING
■To prevent burns
Do not touch the glass at lower
part of the windshield or to the
side of the fron t pillars when the
windshield wiper deicer is on.
Air outlet layout and oper-
ations
Page 398 of 624
3986-1. Using the air conditioning system and defogger
Rear
1 Direct air flow to the left or
right, up or down
2 Open the vent
3 Close the vent
WARNING
■To not interrupt the wind-
shield defogger from operat-
ing
Do not place anything on the
instrument panel which may cover
the air outlets. Otherwise, air flow
may be obstructed, preventing the
windshield defoggers from defog-
ging.
NOTICE
■Humidity sensor
In order to detect fog on the wind-
shield, a sensor which monitors
the temperature of the windshield,
the surround humidity, etc. is
installed.
Follow these points to avoid dam-
aging the sensor:
●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
Page 399 of 624

3996-1. Using the air conditioning system and defogger
6
Interior features
If the Remote Air Conditioning
System is used while the AC
charging cable is connected to
the vehicle, electricity from an
external power source can be
used minimizing the drop in
charge of the hybrid battery
(traction battery).
Charging will be conducted auto-
matically after the Remote Air Con-
ditioning System is stopped.
Check the temperature setting
of the air conditioning system.
( P.390)
The Remote Air C onditioning Sys-
tem will operate in accordance with
the temperature settings of the air
conditioning system.
Press and hold “A/C” on the
wireless remote control to oper-
ate the Remote Air Conditioning
System.
The system can be stopped by
pressing “A/C” twice.
■Operating conditions
The system will only o perate if all of
the following conditions are met:
●The shift lever is in P.
●The power switch is off.
●All doors are closed.
●The hood is closed.
■Remote Air Conditioning Sys-
tem automatic shut-off
The system will automatically shut
off under the follo wing conditions:
●About 20 minutes have passed
since operation began
●Any one of the operating condi-
tions is not met
The system may also shut off if the
charge level of the hybrid battery
(traction battery) drops to low.
■Conditions affecting operation
The system may not start in the fol-
lowing situations:
●The charge level of the hybrid bat-
tery (traction battery) is low
●The outside temperature is
extremely low
●When the hybrid system is cool
(for example , after being left for a
long time in low temperatures)
■Windshield defogger
When defogging the windshield
using the Remote Air Conditioning
System, defogging may be insuffi-
Remote Air Condition-
ing System
The Remote Air Condition-
ing System uses electrical
energy stored in the hybrid
battery (traction battery)
and allows the air condition-
ing to be operated by
remote control.
Before leaving the vehicle
Activating the Remote Air
Conditioning System
Page 400 of 624

4006-1. Using the air conditioning system and defogger
cient due to the power being
restricted more than during normal
air conditioning operation. Also, the
outside of the windshield may fog up
due to the outside temperature,
humidity or air conditioning set tem-
perature.
■Using the heater via the Remote
Air Conditioning System
●When the outside temperature is
low, heating may feel insufficient
due to restricted operation of the
air conditioning.
●When the outside heat exchanger
becomes frosted over, heating
performance may decline due to
automatically switching to the frost
removal operation. ( P.390)
■Security feature
Any unlocked doors will be automat-
ically locked when the system is
operating. The buzzer sounds and
the emergency flashers flash to indi-
cate that the doors have been
locked or the system has been
turned off.
■Conditions affecting operation
P.218
■While the Remote Air Condi-
tioning System is operating
●Depending on the operating con-
dition of the Remote Air Condition-
ing System, the air conditioning
compressor or cooling fan may
spin and an operating noise may
be heard. However, this does not
indicate a malfunction.
●The air conditioning operation
switches, etc. will not operate
while the Remote Air Condition-
ing System is operating.
■Electronic key battery depletion
P.194
■When the electronic key bat-
tery is fully depleted
P.487
■Customization
Setting (e.g. Operation using “A/C”
on the wireless remote control) can
be changed. (Customizable fea-
tures: P.565)
WARNING
■Precautions for the Remote
Air Conditioning System
●Do not use the system if people
are in the vehicle.
Even when the system is in use,
the internal temperature may
still reach a high or low level
due to features such as the
automatic shut-off. Children and
pets left inside the vehicle may
suffer heatstroke dehydration or
hypothermia or could result in
death or serious injury.
●Depending on the surrounding
environment, signals from the
wireless switch may transmit
further than e xpected. Pay
appropriate attention to the
vehicle’s surroundings and use
the switch only when neces-
sary.
●Do not operate “A/C” on the
wireless remote control if the
hood is open. The Remote Air
Conditioning System may oper-
ate unintentionally and objects
may be drawn into the electrical
cooling fan.
NOTICE
■To prevent the hybrid battery
(traction battery) from being
discharged
Use “A/C” on the wireless remote
control only when necessary.