Toyota Prius Prime (2022 year). Manual in english - page 32

■

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 started and at
other times depending on the outside temperature.

●

After the hybrid system is started, if passengers move around inside 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 direct 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 airflow mode (S-FLOW) operation

■

Changing settings using the multi-information display

The air conditioning system settings can be changed on the

screen of

the multi-information display. (

6-1. Using the air conditioning system and defogger

P. 241)

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.

516

■

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.

■

Windshield fog detection function

When automatic mode is set, the humidity sensor (

P. 519) detects fog on

the windshield and controls the air conditioning system to prevent fog.

■

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 depending 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, helping to reduce
odors that occur when starting the vehicle.

■

Operation of the air conditioning system in the air conditioning eco
mode

●

In the air conditioning eco mode, the air conditioning system 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 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 conditioning eco
mode will be turned on automatically. Even in this case, the air conditioning

eco mode can be turned off by pressing

. (

6-1. Using the air conditioning system and defogger

P. 425)

■

When the outside temperature falls to nearly 32



F (0



The dehumidification function may not operate even when

is pressed.

517

■

When the outside temperature exceeds 75°F (24°C) and the air condition-
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 pressing

■

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 may enter into
and accumulate in the air conditioning system. This may then cause 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 the blower may
be delayed for a short period of time immediately after the air conditioning
system is started in automatic mode.

■

Air conditioning filter

6-1. Using the air conditioning system and defogger

P. 637

■

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

518

■

Customization

Settings (e.g. A/C auto switching operation) can be changed. (Customizable
features:



P. 749)

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 that 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 rear view mirror
defoggers are on.

●

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.

519

6-1. Using the air conditioning system and defogger

6-1. Using the air conditioning system and defogger

NOTICE

■

Humidity sensor

●

Do not spray the glass cleaner on the sensor or subject it to strong impacts

●

Do not stick anything on the sensor

■

To prevent 12-volt battery discharge

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 performed by your Toyota dealer. When a part of
the air conditioning system, such as the evaporator, is to be replaced, it
must be replaced with a new one.

■

Air outlets

The air outlets become hot when used for heating. Therefore, use caution
and adjust the air outlets accordingly.

In order to detect fog on the windshield, a
sensor which monitors the temperature
of the windshield, the surround humidity,
etc. is installed. (



P. 516)

Follow these points to avoid damaging
the sensor:

●

Do not disassemble the sensor

520

Automatic air conditioning system (vehi-

cles with 11.6-inch display)

The following informations are displayed on the navigation system
screen.

Temperature setting
Fan speed setting
Automatic mode setting
Airflow mode setting
Front seat concentrated air-
flow mode (S-FLOW) setting
Air conditioning eco mode
setting
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

1
2
3
4
5

7
8

521

6-1. Using the air conditioning system and defogger

6-1. Using the air conditioning system and defogger

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 decrease 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 conditioning
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

1
2

3
4

522

■

Other functions

●

Switching between outside air and recirculated air modes
(

P. 523)

●

Defogging the windshield (

P. 523)

●

Defogging the rear window and outside rear view mirrors
(

6-1. Using the air conditioning system and defogger

P. 523)

Select

on the air conditioning control screen.

Adjust the temperature setting. (



P. 521)

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 operated is maintained.

This function automatically controls 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. Unneces-
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 detected in the rear seats

●

The windshield defogger is not operating
While operating,

illuminates.

■

Manually turning front seat concentrated airflow mode on/off

In front seat concentrated airflow 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, automatic airflow
control stops operating.
Select

on the center display and switch the airflow.

●

Indicator illuminated: Airflow to the front seats only

●

Indicator off: Airflow to all the seats

Using automatic mode

Front seat concentrated airflow mode (S-FLOW)

523

6-1. Using the air conditioning system and defogger

■

Switching between outside air and recirculated air modes

Select

on the air conditioning control screen.

The mode switches between outside air mode and recirculated air mode
each time

is selected.

The

indicator illuminates when recirculated air mode is

selected.

■

Air conditioning eco mode

The air conditioning system is controlled with low fuel consumption
prioritized such as reducing fan speed, etc.

Select

on the air conditioning control screen.

The air conditioning eco mode switches between on and off each time

is selected.

The

indicator illuminates when the air conditioning eco mode is

on.

■

Defogging the windshield

Defoggers are used to defog the windshield and front side win-
dows.
Press

Set

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
temperature up.
The switch indicator illuminates when the defoggers are on.

To return to the previous mode, press

again when the windshield is

defogged. Also, turning the power switch off during operation can return
to the previous mode.

■

Defogging the rear window and outside rear view mirrors

Defoggers are used to defog the rear window and to remove rain-
drops, dew and frost from the outside rear view mirrors.
Press

Defoggers switch between on and off each time

is pressed.

The switch indicator illuminates when defoggers are on.
The defoggers will automatically turn off after a period of time.

Other functions

524

■

Eco score (A/C score)



P. 229

■

Location of air outlets

The air outlets and air volume
change

according

the

selected airflow mode.

■

Adjusting the air flow direction

Direct air flow to the left or right,
up or down.

■

Opening and closing the air outlets

Air outlets



Left side outlet/right side outlet



Center outlets

Open the vent
Close the vent

1
2

525

6-1. Using the air conditioning system and defogger

6-1. Using the air conditioning system and defogger

■

Heating

●

In HV mode, the gasoline engine may operate in order to extract heat from
the engine coolant via the heater.

●

In EV mode, heating is done by a heat pump system.
• When the outside temperature is low or it is snowing, compared to con-

ventional vehicles, heating may be less effective and warm air may not
come out.

• If frost has formed of the outside heat exchanger, the heating perfor-

mance will decline. The frost can be removed from the outside heat
exchanger by operating the Remote Air Conditioning System before driv-
ing (



P. 531). When frosted over, the heating operation of the Remote

Air Conditioning System starts after defrosting.

• When

is turned on, the heating is controlled optimally. There-

fore, the set heating performance may not be achieved even if the fan
speed setting is increased.

●

In the following situations the gasoline 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

■

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
immediately after

is pressed.

■

Water droplets during air conditioning operation

• When the outside heat exchanger is

frosted over, fan speed declines and it
may become harder to heat the inte-
rior. However, it is not a malfunction.
In this situation, the air temperature
from the outlets may not change even
though the set temperature is raised.

The outside heat exchanger, accumulator
and air conditioning piping may incur con-
densation or frost may form. During or
after the air conditioning operation, water
droplets may fall from the vehicle. How-
ever, it is not a malfunction.

Outside heat exchanger

Accumulator

526

■

Setting confirmation screen

■

Operation of automatic airflow control

●

■

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 direct 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 airflow mode (S-FLOW) operation

■

Changing settings using the multi-information display

The air conditioning system settings can be changed on the

screen of

the multi-information display. (

6-1. Using the air conditioning system and defogger

P. 241)

■

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 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 selected, the front seat

concentrated airflow mode (S-FLOW) sta-
tus is displayed on the multi-information
display.

527

■

Windshield fog detection function

When automatic mode is set, the humidity sensor (

6-1. Using the air conditioning system and defogger

P. 530) detects fog on

the windshield and controls the air conditioning system to prevent fog.

■

When driving on dusty roads

■

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 depending 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, helping to reduce
odors that occur when starting the vehicle.

■

Operation of the air conditioning system in the air conditioning eco
mode

●

In the air conditioning eco mode, the air conditioning system 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 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 conditioning eco
mode will be turned on automatically. Even in this case, the air conditioning
eco mode can be turned off by selecting

. (



P. 425)

■

When the outside temperature falls to nearly 32



F (0



The dehumidification function may not operate even when

selected.

■

When the outside temperature exceeds 75°F (24°C) and the air condition-
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 pressing

528

■

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 may enter into
and accumulate in the air conditioning system. This may then cause 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 the blower may
be delayed for a short period of time immediately after the air conditioning
system is started in automatic mode.

■

Air conditioning filter

6-1. Using the air conditioning system and defogger

P. 637

■

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

529