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202 2-1. Driving procedures
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■Situations in which EV drive mode cannot be turned on
It may not be possible to turn EV drive mode on in the following situations.
*
If it cannot be turned on, a buzzer will sound and a message will be shown
on the multi-information display.
● The temperature of the hybrid system is high.
The vehicle has been left in the sun, driven on a hill, driven at high
speeds, etc.
● The temperature of the hybrid system is low.
The vehicle has been left in temperatures lower than about 32
F (0C)
for a long period of time etc.
● The gasoline engine is warming up.
● The hybrid battery (traction battery) is low.
When the amount of remaining hybrid battery (traction battery) charge
displayed on the meter is low. ( P. 44)
● Vehicle speed is high.
● The accelerator pedal is depressed firmly or the vehicle is on a hill etc.
● The windshield defogger is in use.
*: Depending on the circumstances, EV drive mode may also not be
switched to in situations other than those above.
■ Switching to EV drive mode when the gasoline engine is cold
If the hybrid system is started while the gasoline engine is cold, the gasoline
engine will start automatically after a short period of time in order to warm
up. In this case, you will become unable to switch to EV drive mode.
After the hybrid system has started and the “READY” indicator has illumi-
nated, press the EV drive mode switch before the gasoline engine starts to
switch to EV drive mode.
Page 298 of 640

298 2-4. Using other driving systems
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NOTICE
■To prevent damage to or incorr ect operation of the LKA system
● Do not modify the headlights or attach stickers to the surface of the lights.
● Do not modify the suspension or sun visor, or replace them with non-genu-
ine parts.
● Do not install or place anything on the hood or the grille. Also, do not install
a grille guard (bull bars, kangaroo bar etc.).
● Do not modify the sun visor or replace it with anything other than a genu-
ine Toyota product.
● If your windshield needs repairs, contact your Toyota dealer.
■ Camera sensor (P. 289)
Observe the following to ensure that the LKA system functions correctly.
● Keep the windshield clean at all times.
Performance could be affected if the windshield is dirty, or if raindrops,
condensation or ice are adhering to the windshield.
● When adjusting the rear view mirror, make sure that it does not block the
camera lens.
● Do not attach window tinting to the windshield.
● Do not install an antenna in front of the camera lens.
● If the windshield is fogged up, use the windshield defogger to remove fog
from the windshield.
When it is cold, using the heater with air blowing to the feet may allow the
upper part of the windshield to fog up. This will have a negative effect on
the images.
●Do not attach a sticker or other items to
the windshield near the camera sensor.
● Do not install or place anything near the
camera.
Page 330 of 640
330
PRIUS_OM_OM47791U_(U)
3-1. Using the air conditioning system and defogger
Air conditioning system
Airflow and outlets are automatically adjusted according to the tem-
perature setting.
Temperature
control buttonTemperature
setting displayAir outlet
display
Fan speed
display Windshield
defogger button
Off
Automatic
mode Outside air or
recirculated
air mode
Changes the
air outlets used
Fan speed
control buttonOutside temperature display ( P. 370)
Micro dust and
pollen filter
Cooling and dehumidification
function ON/OFF switch
Page 333 of 640
333
3-1. Using the air conditioning system
and defogger
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3
Interior features
Mainly air flows to the feet.
Air flows to the feet and the
windshield defogger operates.
■ Switching between outside air and recirculated air modes
Press .
The modes switches between (recycles air inside the vehicle)
and (introduces air from outside the vehicle) modes each time
the button is pressed.
Page 334 of 640
334 3-1. Using the air conditioning system and defogger
PRIUS_OM_OM47791U_(U)
Defogging the windshield
Press .
The air conditioning system con-
trol operates automatically.
Recirculated air mode will auto-
matically switch to outside air
mode.
Micro dust and pollen filter
Press .
Outside air mode switches to recirculated air mode. Pollen is removed
from the air and the air flows to the upper part of the body.
Usually the system will turn off automatically approximately 3 minutes
later.
To stop the operation, press again.
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337
3-1. Using the air conditioning system
and defogger
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3
Interior features
■Using the automatic mode
Fan speed is adjusted automatically in accordance with the temperature set-
ting and ambient conditions. As a result, the following may occur.
● Immediately after
is pressed, the fan may stop for a while until
warm or cool air is ready to flow.
● Cool air may flow to the area around the upper body when the heater is
on.
■ Switching between outside air and recirculated air modes
Recirculated air mode or outside air mode may be automatically switched to
in accordance with under these condition, such as temperature setting and
inside temperature.
Also, outside air mode may be automatically switched to when the outside
temperature is low.
■ When the outside temperature exceeds 75
F (24C) and the air condi-
tioning system is on
● In order to reduce the air conditioning power consumption, the air condi-
tioning 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
.
■ Using the system in recirculated air mode
The windows will fog up more easily if the recirculated air mode is used.
■ Window defogger feature
● Recirculated air mode may automatically switch to outside air mode in
situations where the windows need to be defogged.
● When the outside air temperature is low, it may take a while for the con-
densation to clear from the windshield.
Page 340 of 640
340 3-1. Using the air conditioning system and defogger
PRIUS_OM_OM47791U_(U)
CAUTION
■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, blocking
your vision.
NOTICE
■To prevent 12-volt battery discharge
Do not leave the air conditioning system on longer than necessary when the
hybrid system is not operating.
Page 407 of 640

407
4-1. Maintenance and care
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4
Maintenance and care
NOTICE
■
Cleaning detergents
● Do not use the following types of detergent, as they may discolor the vehi-
cle interior or cause streaks or damage to painted surfaces:
• Non-seat portions: Organic substances such as benzene or gasoline,
alkaline or acidic solutions, dye, and bleach
• Seats: Alkaline or acidic solutions, such as thinner, benzene, and alcohol
● Do not use polish wax or polish cleaner. The instrument panel’s or other
interior part’s painted surface may be damaged.
■ Preventing damage to leather surfaces
Observe the following precautions to avoid damage to and deterioration o\
f
leather surfaces:
● Remove any dust or dirt from leather surfaces immediately.
● Do not expose the vehicle to direct sunlight for extended periods of time.
Park the vehicle in the shade, especially during summer.
● Do not place items made of vinyl, plastic, or containing wax on the uphol-
stery, as they may stick to the leather surface if the vehicle interior heats
up significantly.
■ Water on the floor
Do not wash the vehicle floor with water.
Vehicle systems such as the audio system may be damaged if water comes
into contact with electrical components such as the audio system above or
under the floor of the vehicle. Water may also cause the body to rust.
■ When cleaning the inside of the windshield (vehicles with LKA [Lane-
Keeping Assist])
Be careful not to touch the camera sensor ( P. 289).
If the camera is accidentally scratched or hit, LKA may not operate properly
or may cause a malfunction.
■ Cleaning the inside of the rear window
● Do not use glass cleaner to clean the rear window, as this may cause
damage to the rear window defogger heater wires. Use a cloth dampened
with lukewarm water to gently wipe the window clean. Wipe the window in
strokes running parallel to the heater wires.
● Be careful not to scratch or damage the heater wires.