2017 TOYOTA PRIUS air conditioning

5166-1. Using the air conditioning system and defogger
PRIUS_OM_OM47B54U_(U)■
Location of air outlets
The air outlets and air volume
changes according to the
selected airflow mode.
■Adjusting the position of the air outlets
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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PRIUS_OM_OM47B54U_(U)
5176-1. Using the air conditioning system and defogger
6
Interior features
■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.
■ S-FLOW mode operation
In automatic mode, when the rear seat doors are opened or closed, S-FLOW
mode will not operate and the indicator light turns off. When the
is pressed, the system returns to S-FLOW 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.
■ Windshield fog detection function
When automatic mode is set, the humidity sensor ( →P. 520) detects fog on
the windshield and controls the air conditioning system to prevent fog. When is pressed, the S-FLOW
mode status is displayed on the multi-
information display and the indica-
tor light illuminates.

5186-1. Using the air conditioning system and defogger
PRIUS_OM_OM47B54U_(U)■
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.
■ 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. 620
■ Customization
Settings (e.g. A/C Auto switch operation) can be changed.
(Customizable features: →P. 748)

PRIUS_OM_OM47B54U_(U)
5196-1. Using the air conditioning system and defogger
6
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 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.

5206-1. Using the air conditioning system and defogger
PRIUS_OM_OM47B54U_(U)
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. 517)
Follow these points to avoid damaging
the sensor:
● Do not disassemble the sensor

521
PRIUS_OM_OM47B54U_(U)
6-1. Using the air conditioning system and defogger
6
Interior features
Seat heaters∗
∗: If equipped
Seat heaters heat the front seats.
WARNING
●Care should be taken to prevent injury if anyone in the following categories
comes in contact with the seats when the heater is on:
• Babies, small children, the elderly, the sick and the physically chal-
lenged
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping drugs, cold remedies, etc.)
● Observe the following precautions to prevent minor burns or overheating:
• Do not cover the seat with a blanket or cushion when using the seat
heater.
• Do not use seat heater more than necessary.
NOTICE
● Do not put heavy objects that have an uneven surface on the seat and do
not stick sharp objects (needles, nails, etc.) into the seat.
● To prevent 12-volt battery discharge, do not use the functions when the
hybrid system is off.

5226-1. Using the air conditioning system and defogger
PRIUS_OM_OM47B54U_(U)
Heats the seat at high tempera-
ture (HI)
Heats the seat at low tempera-
ture (LO)
The indicator light comes on when
one side of the switch is pressed.
To stop the operation, gently press
the other side of the switch.
●The seat heaters can be used when the power switch is in ON mode.
● When not in use, turn off the switch. The indicator light goes off.
● Passenger side operation indicator:
Operating instructions
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2
Illuminates while the passenger side
seat heater is operating, allowing the
operating condition of the passenger
side seat heater to be checked from the
driver side as well.

565
PRIUS_OM_OM47B54U_(U)
7Maintenance and care
7-1. Maintenance and careCleaning and protecting the vehicle exterior .......... 566
Cleaning and protecting the vehicle interior ........... 572
7-2. Maintenance Maintenance requirements ................... 577
General maintenance........ 580
Emission inspection and maintenance (I/M)
programs......................... 583
7-3. Do-it-yourself maintenance Do-it-yourself service precautions ..................... 584
Hood ................................. 587
Positioning a floor jack ...... 589
Engine compartment ......... 590
Tires .................................. 604
Tire inflation pressure ....... 614
Wheels .............................. 617
Air conditioning filter.......... 620
Wiper rubber replacement .................... 623
Electronic key battery........ 627
Checking and replacing fuses ............................... 630
Headlight aim .................... 633
Light bulbs......................... 635