2021 TOYOTA PRIUS Owners Manual (in English)

PRIUS_OM_OM47E09U_(U)
4415-1. Using the air conditioning system and defogger
5
Interior features
■Location of air outlets
The air outlets and air volume
change according to the
selected airflow mode.
■Adjusting the air flow direction
Direct air flow to the left or right,
up or down.
■Opening and closi ng the air outlets
Air outlets
Left side outlet/right side outletCenter outlets
Open the vent
Close the vent Open the vent
Close the vent
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4425-1. Using the air conditioning system and defogger
PRIUS_OM_OM47E09U_(U)
■Using automatic mode
Fan speed is adjusted automatically according to the temperatur e setting and
the ambient conditions.
Therefore, the fan may stop for a while until warm or cool air is ready to flow
immediately after is pressed.
■ Setting confirmation screen
■ Operation of automatic airflow control
●In order to maintain a comfortable interior, airflow may be directed to seats
without passengers immediately after the hybrid system is start ed and at
other times depending on the outside temperature.
● After the hybrid system is started, if passengers move around i nside or
enter/exit the vehicle, the system cannot accurately detect the presence of
passengers and automatic airflow control will not operate.
■ Operation of manual airflow control
Even if the function is manually switched to directing airflow to only the front
seats, when a rear seat is occupied, it may automatically direc t airflow to all
seats.
■ To return to automatic airflow control
With the indicator off, turn the power switch off.
After 60 minutes or more elapse, turn the power switch to ON.
■ Front seat concentrated airfl ow mode (S-FLOW) operation
■ Changing settings using the multi-information display
The air conditioning system settings can be changed on the scr een of
the multi-information display. ( P. 147)
When changing the settings of the air
conditioning system, the setting confirma-
tion screen is shown as a pop-up on the
multi-information display.
Press of the meter control switches to
go back to the previous screen.
When is pressed, the front seat
concentrated airflow mode (S-FLOW) sta-
tus is displayed on the multi-information
display.
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PRIUS_OM_OM47E09U_(U)
4435-1. Using the air conditioning system and defogger
5
Interior features
■Fogging up of the windows
●The windows will easily fog up when the humidity in the vehicle is high.
Turning on will dehumidify the air from the outlets and defog the
windshield effectively.
● If you turn off, the windows may fog up more easily.
● The windows may fog up if the recirculated air mode is used.
■ When driving on dusty roads
Close all windows. If dust thrown up by the vehicle is still drawn into the vehi-
cle 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 recommended in prevent-
ing dirty air 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 dependin g on the
temperature setting or the inside temperature.
■ Fresh air intake system while parking
When parking, the system automatically switches to outside air mode to
encourage better air circulation throughout the vehicle, helpin g to reduce
odors that occur when starting the vehicle.
■ Operation of the air conditioning system in the air conditionin g eco
mode
● In the air conditioning eco mode, the air conditioning system i s controlled as
follows to prioritize fuel efficiency:
• Engine speed and compressor operation controlled to restrict h eating/
cooling capacity
• Fan speed restricted when automatic mode is selected
● To improve air conditioning performance, perform the following operations:
• Adjust the fan speed
• Adjust the temperature setting
• Turn off the air conditioning eco mode
● When the driving mode is set to Eco driving mode, the air condi tioning eco
mode will be turned on automatically. Even in this case, the ai r conditioning
eco mode can be turned off by pressing . ( P. 347)
■ When the outside tempera ture falls to nearly 32F (0 C)
The dehumidification function may not operate even when is pressed.

4445-1. Using the air conditioning system and defogger
PRIUS_OM_OM47E09U_(U)■
When the outside temperature exceeds 75°F (24°C) and the air co ndition-
ing system is on
● In order to reduce the air conditioning power consumption, the air condition-
ing 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 pre ssing .
■ Ventilation and air conditioning odors
●To let the fresh air in, set the air conditioning system to the outside air mode.
● During use, various odors from inside and outside the vehicle m ay enter into
and accumulate in the air conditioning system. This may then ca use odor to
be emitted from the vents.
● In order to suppress odors that occur when the air conditioning system
starts, fresh air is automatically taken in when parked.
● To reduce potential odors from occurring, the start timing of t he blower may
be delayed for a short period of time immediately after the air conditioning
system is started in automatic mode.
■ Air conditioning filter
P. 548
■ Air conditioning system refrigerant
●The meaning of each symbol on the label are as follows:
●
A label regarding the refrigerant of the
air conditioning system is attached to the
hood at the location shown in the follow-
ing illustration.
Caution
Air conditioning system
Air conditioning system lubricant type
Requires registered technician to service air conditioning
system
Flammable refrigerant

PRIUS_OM_OM47E09U_(U)
4455-1. Using the air conditioning system and defogger
5
Interior features
WARNING
■To prevent the windshield from fogging up
● Do not use
during cool air operation in extremely humid weather.
The difference between the temperature of the outside air and t hat of the
windshield can cause the outer surface of the windshield to fog up, block-
ing your vision.
■ To prevent burns
Do not touch the rear view mirror surfaces when the outside rea r view mirror
defoggers are on.
NOTICE
■ To prevent 12-volt b attery discharge
Do not leave the air conditioning system on longer than necessa ry when the
hybrid system is off.
■ When repairing/replacing parts of the air conditioning system
Have repair/replacement performed by your Toyota dealer. When a part of
the air conditioning system, such as the evaporator, is to be r eplaced, it
must be replaced with a new one.
■ Air outlets
The air outlets become hot when used for heating. Therefore, us e caution
and adjust the air outlets accordingly.
● 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 defogging.

446
PRIUS_OM_OM47E09U_(U)
5-1. Using the air conditioning system and defogger
Automatic air conditioning system
(vehicles with 11.6-inch display)
The following informations are displayed on the navigation syst em
screen.
Temperature setting
Fan speed setting
Automatic mode setting
Airflow mode setting
Front seat concentrated airflow
mode (S-FLOW) setting
Air conditioning eco mode set-
ting
A/C setting
Outside/recirculated air mode setting
Air outlets and fan speed are automatically adjusted according
to the temperature setting.
Air conditioner information area
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PRIUS_OM_OM47E09U_(U)
4475-1. Using the air conditioning system and defogger
5
Interior features
The air conditioning control
screen can be displayed by touch-
ing the air conditioner information
area on the navigation system
screen.
■Adjusting the temperature setting
Press “ ” on to increase the temperature and “ ” to decrease
the temperature.
If the indicator is turned off, the system will blow ambient
temperature air or heated air.
■
Adjusting the fan speed setting
Select on the air conditioning control screen to increase the
fan speed and to decr ease the fan speed.
The fan speed is shown on the control screen. (7 levels)
Select to turn the fan off.
■
Change the airflow mode
To change the air outlets, select any switch on the air conditi oning
control screen.
Air flows to the upper body
Air flows to the upper body
and feet
Air flows to the feet
Air flows to the feet and the
windshield defogger oper-
ates
Air conditioning control screen
Air conditioning controls
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4485-1. Using the air conditioning system and defogger
PRIUS_OM_OM47E09U_(U)■
Other functions
●
Switching between outside air and recirculated air modes
(  P. 449)
● Defogging the windshield ( P. 4 5 0 )
● Defogging the rear window and outside rear view mirrors
(  P. 450)
Select on the air conditioning control screen.
Adjust the temperature setting. ( P. 4 4 7 )
To stop the operation, select .
■Automatic mode indicator
If the fan speed setting or air flow modes are operated, the
indicator goes off. However, automatic mode for func-
tions other than that o perated is maintained.
This function automatically contro ls the air conditioning airflow so that
priority is given to the front seats. When the front passenger seat is
not occupied, airflow may switch to only the driver’s seat. Unn eces-
sary air conditioning is suppressed, contributing to increased fuel effi-
ciency.
Front seat concentrated airflow mode operates in the following situa-
tions.
● No passengers are dete cted in the rear seats
● The windshield defogger is not operating
While operating, illuminates.
■Manually turning front seat con centrated airflow mode on/off
In front seat concentrated airflow mode, directing airflow to t he front
seats only and to all seats can be switched via switch operatio n.
When the mode has been switched manually, automatic airflow
control stops operating.
Select on the center displ ay and switch the airflow.
● Indicator illuminated: Airflow to the front seats only
● Indicator off: Airfl ow to all the seats
Using automatic mode
Front seat concentrated airflow mode (S-FLOW)
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