Page 496 of 784

4966-1. Using the air conditioning system and defogger
PRIUS PRIME_OM_OM47A88U_(U)■
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 i mmediately after the air conditioning
system is started in automatic mode.
■ Air conditioning filter
→P. 620
■ Customization
Settings (e.g. A/C auto switching operation) can be changed. (Customizable
features: →P. 732)
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 surf aces 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.
Page 497 of 784
PRIUS PRIME_OM_OM47A88U_(U)
4976-1. Using the air conditioning system and defogger
6
Interior features
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.
■ 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. 494)
Follow these points to avoid damaging
the sensor:
● Do not disassemble the sensor
Page 498 of 784
498
PRIUS PRIME_OM_OM47A88U_(U)
6-1. Using the air conditioning system and defogger
Automatic air conditi oning 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
S-FLOW mode 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
6
7
8
Page 499 of 784
PRIUS PRIME_OM_OM47A88U_(U)
4996-1. Using the air conditioning system and defogger
6
Interior features
The air conditioning control
screen can be displayed by touch-
ing the air conditioner information
area on the navi gation system
screen.
■Adjusting the temperature setting
Press “ ∧” on to increase the temperature and “ ∨” to decrease
the temperature.
■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
Page 500 of 784

5006-1. Using the air conditioning system and defogger
PRIUS PRIME_OM_OM47A88U_(U)■
S-FLOW mode
In S-FLOW mode, priority for the ai
rflow is given to the front seats,
reducing the airflow and air conditio ning effect on the rear seats.
If a passenger is not detected in the front passenger seat, priority
for the airflow will be given to the driver’s seat only.
However, air will always be blown from the side outlet of the front pas-
senger seat.
S-FLOW mode will be activated autom atically according to the set
temperature, outside temperature, etc. ( →P. 505)
The S-FLOW mode can be turned on/off manually by selecting on
the air conditioning control screen.
The indicator illuminates when in S-FLOW mode.
■
Other functions
● Switching between outside ai r and recirculated air modes
( → P. 501)
● Defogging the windshield ( →P. 501)
● Defogging the rear window and outside rear view mirrors
(→ P. 502)
Select on the air conditioning control screen.
Adjust the temperature setting. ( →P. 499)
To stop the operation, select .
■Automatic mode indicator
If the fan speed setting or ai r flow modes are operated, the
indicator goes off. Howeve r, automatic mode for func-
tions other than that operated is maintained.
Using automatic mode
1
2
3
Page 501 of 784

PRIUS PRIME_OM_OM47A88U_(U)
5016-1. Using the air conditioning system and defogger
6
Interior features
■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 cont rolled 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.
Other functions
Page 502 of 784
5026-1. Using the air conditioning system and defogger
PRIUS PRIME_OM_OM47A88U_(U)■
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.
■
Eco score (A/C score)
→ P. 2 1 4
■Location of air outlets
The air outlets and air volume
change according to the
selected airflow mode.
Air outlets
Page 503 of 784
PRIUS PRIME_OM_OM47A88U_(U)
5036-1. Using the air conditioning system and defogger
6
Interior features
■Adjusting the position of the air outlets
Direct air flow to the left or right,
up or down.
■Opening and closing the air outlets
Left side outlet/right side outletCenter outlets
Open the vent
Close the vent Open the vent
Close the vent
1
2
1
2