2018 TOYOTA PRIUS Owners Manual (in English)

PRIUS_OM_OM47B89U_(U)
5216-1. Using the air conditioning system and defogger
6
Interior features
■Location of air outlets
The air outlets and air volume
changes according to 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
Right side outletCenter outlet/left side outlet
Open the vent
Close the vent Open the vent
Close the vent
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5226-1. Using the air conditioning system and defogger
PRIUS_OM_OM47B89U_(U)
■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.
■ Setting confirmation screen
■ S-FLOW mode operation
■ Changing from manual S-FLOW mode to automatic S-FLOW mode
Press to disable S-FLOW mode.
The indicator will go off.
Turn the power switch off.
After 60 minutes have elapsed, change the power switch to ON mode.
■ Changing settings of the Automatic air conditioning system
The air conditioning system settings can be changed on the screen
(→P. 135) of the multi-information display.
■ Fogging up of the windows
●The windows will easily fog up when the humidity in the vehicle is high.
Pressing 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 pressed, the S-FLOW
mode status is displayed on the multi-
information display.
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PRIUS_OM_OM47B89U_(U)
5236-1. Using the air conditioning system and defogger
6
Interior features
■Windshield fog detection function
When automatic mode is set, the humidity sensor ( →P. 525) detects fog on
the windshield 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
to the recirculated air mode. This is effective in preventing outside air from
entering the vehicle interior. During cooling operation, setting the recircu-
lated air mode will also cool the vehicle interior effectively.
● 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 conditio ning system in Eco drive mode
● In Eco drive mode, the air conditioning system is controlled as follows to pri-
oritize 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 Eco drive mode
● Even when the drive mode is set to Eco drive mode, the air conditioning eco
mode can be turned off by pressing .
■ When the outside temperat ure falls to nearly 32°F (0°C)
The dehumidification function may not operate even when is pressed.
■ 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
→P. 634

5246-1. Using the air conditioning system and defogger
PRIUS_OM_OM47B89U_(U)
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.

PRIUS_OM_OM47B89U_(U)
5256-1. Using the air conditioning system and defogger
6
Interior features
NOTICE
■Humidity sensor (if equipped)
● 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. 523)
Follow these points to avoid damaging
the sensor:
● Do not disassemble the sensor

526
PRIUS_OM_OM47B89U_(U)
6-1. Using the air conditioning system and defogger
Automatic air condi tioning system
(vehicles 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
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PRIUS_OM_OM47B89U_(U)
5276-1. 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.
If is not pressed, 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
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5286-1. Using the air conditioning system and defogger
PRIUS_OM_OM47B89U_(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.
When a passenger is not detecte d in the front passenger seat,
depending on the set temperature and ambient temperature, prior-
ity for the airflow will be gi ven to the driver’s seat only.
However, air will always be blown from the side outlet of the front pas-
senger seat.
The following S-FLOW modes are available:
Automatic S-FLOW mode
The system determines whether or not a rear passenger is in the
vehicle by the opening and closing of a rear door. When a rear
passenger is determined to be in the vehicle, S-FLOW mode will
be automatically disabled.
To enable S-FLOW mode again, press and enter manual
S-FLOW mode. (→P. 532)
The indicator will illuminate when S-FLOW mode is enabled.
Manual S-FLOW mode
When is pressed, S-FLOW m ode will be manually enabled/
disabled. ( →P. 532)
The indicator will illuminate when S-FLOW mode is enabled.
When the power switch is turned to ON mode, the system is oper-
ated in automatic S-FLOW mode.
■Other functions
● Switching between outside ai r and recirculated air modes
( → P. 529)
● Defogging the windshield ( →P. 530)
● Defogging the rear window and outside rear view mirrors
(→ P. 530)