air condition TOYOTA PRIUS PLUG-IN HYBRID 2021 Owners Manual

TABLE OF CONTENTS4
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
5-5. Using the driving
support systems
Toyota Safety Sense .........405
PCS (Pre-Collision
System) ...........................418
LTA (Lane Tracing
Assist) ..............................429
RSA (Road Sign Assist).....445
Dynamic radar cruise
control with full-speed
range ...............................451
Driving mode select
switch...............................468
Speed limiter ......................470
BSM
(Blind Spot Monitor) .........473
• The Blind Spot Monitor
function ..........................489
• The Rear Crossing
Traffic Alert function.......493
Toyota parking
assist-sensor ...................499
Parking Support Brake
function ............................510
S-IPA (Simple Intelligent
Parking Assist
System) ...........................523
GPF (Gasoline Particulate
Filter) system ...................558
Driving assist systems .......559
5-6. Driving tips
Winter driving tips ..............5666-1. Using the air conditioning
system and defogger
Automatic air conditioning
system............................. 572
Remote Air Conditioning
System ............................ 585
Seat heaters ...................... 589
6-2. Using the interior lights
Interior lights list ................ 591
• Front interior light .......... 592
• Front personal lights ..... 592
• Rear interior light .......... 593
6-3. Using the storage features
List of storage features...... 594
• Glove box ...................... 595
• Console box .................. 595
• Cup holders .................. 596
• Bottle holders/
door pockets ................. 597
• Auxiliary boxes .............. 598
• Seat back pockets ........ 599
Luggage compartment
features ........................... 600
6-4. Using the other interior
features
Other interior features ....... 605
• Sun visors ..................... 605
• Vanity mirrors ................ 605
• Power outlets ................ 606
• Wireless charger ........... 607
• Armrest ......................... 613
• Coat hooks .................... 613
• Assist grips ................... 614
6Interior features

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Prius Plug-in Hybrid_OM_OM47D72E_(EE)
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7-1. Maintenance and care
Cleaning and protecting
the vehicle exterior ..........616
Cleaning and protecting
the vehicle interior ...........622
7-2. Maintenance
Maintenance
requirements....................628
7-3. Do-it-yourself maintenance
Do-it-yourself service
precautions ......................631
Hood ..................................634
Positioning a floor jack .......636
Engine compartment..........637
Tires ...................................650
Tire inflation pressure ........665
Wheels ...............................667
Replacing the tire ...............669
Air conditioning filter ..........681
Wiper insert
replacement .....................685
Electronic key battery ........688
Checking and replacing
fuses ................................691
Light bulbs .........................695
8-1. Essential information
Emergency flashers .......... 704
If your vehicle has to
be stopped in an
emergency ...................... 705
If the vehicle is trapped in
rising water...................... 706
8-2. Steps to take in an
emergency
If your vehicle needs
to be towed ..................... 707
If you think something is
wrong .............................. 713
If a warning light turns on
or a warning buzzer
sounds ............................ 714
If a warning message is
displayed ......................... 723
If you have a flat tire .......... 731
If the hybrid system will
not start ........................... 749
If the electronic key does
not operate properly ........ 751
If the 12-volt battery is
discharged ...................... 755
If your vehicle
overheats ........................ 761
If the vehicle becomes
stuck................................ 766
7Maintenance and care8When trouble arises

17Pictorial index
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Multi-information display . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 230
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 230
Energy monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 233
When the warning messages are displayed . . . . . . . . . . . . . . P. 723
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 386
Applying/releasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 386
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . P. 566
Warning buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 386
Turn signal lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 385
Headlight switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 387
Headlights/front position lights/tail lights/
daytime running lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 387
Front fog lights/rear fog lights . . . . . . . . . . . . . . . . . . . . . . . . . P. 397
Windshield wipers and washer switch . . . . . . . . . . . . . . . . P. 398
Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 398
Adding washer fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 648
Emergency flasher switch . . . . . . . . . . . . . . . . . . . . . . . . . . P. 704
Fuel filler door opener. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 403
Hood lock release lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 634
Tilt and telescopic steering lock release lever . . . . . . . . . . P. 346
Air conditioning system . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 572
Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 572
Rear window defogger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 577
Audio system
*
*
: Refer to “Navigation system Owner’s manual”.
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23Pictorial index
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Multi-information display . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 230
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 230
Energy monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 233
When the warning messages are displayed . . . . . . . . . . . . . . P. 723
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 386
Applying/releasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 386
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . P. 566
Warning buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 386
Turn signal lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 385
Headlight switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 387
Headlights/front position lights/tail lights/
daytime running lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 387
Front fog lights/rear fog lights . . . . . . . . . . . . . . . . . . . . . . . . . P. 397
Windshield wipers and washer switch . . . . . . . . . . . . . . . . P. 398
Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 398
Adding washer fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 648
Emergency flasher switch . . . . . . . . . . . . . . . . . . . . . . . . . . P. 704
Fuel filler door opener. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 403
Hood lock release lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 634
Tilt and telescopic steering lock release lever . . . . . . . . . . P. 346
Air conditioning system . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 572
Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 572
Rear window defogger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 577
Audio system
*
*
: Refer to “Navigation system Owner’s manual”.
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451-1. For safe use
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Prius Plug-in Hybrid_OM_OM47D72E_(EE)
For safety and security
■If the SRS airbags deploy (inflate)
● Slight abrasions, burns, bruising etc., may be sustained from SRS airbags,
due to the extremely high speed deployment (inflation) by hot gases.
● A loud noise and white powder will be emitted.
● Parts of the airbag module (steering wheel hub, airbag cover and inflator) as
well as the front seats, parts of the front and rear pillars, and roof side rails,
may be hot for several minutes. The airbag itself may also be hot.
● The windshield may crack.
● The hybrid system will be stopped and fuel supply to the engine will be
stopped. ( P. 109)
● The emergency flashers will turn on automatically. (P. 704)
■ SRS airbag deployment conditions (SRS front airbags)
● The SRS front airbags will deploy in the event of an impact that exceeds the
set threshold level (the level of force corresponding to an approximately 20 -
30 km/h [12 - 18 mph] frontal collision with a fixed wall that does not move or
deform).
However, this threshold velocity will be considerably higher in the following
situations:
• If the vehicle strikes an object, such as a parked vehicle or sign pole,
which can move or deform on impact
• If the vehicle is involved in an underride collision, such as a collision in
which the front of the vehicle “underrides”, or goes under, the bed of a
truck
● Depending on the type of collision, it is possible that only the seat belt pre-
tensioners will activate.
■ SRS airbag deployment conditions (SRS side and curtain shield airbags)
● The SRS side and curtain shield airbags will deploy in the event of an
impact that exceeds the set threshold level (the level of force corresponding
to the impact force produced by an approximately 1500 kg [3300 lb.] vehicle
colliding with the vehicle cabin from a direction perpendicular to the vehicle
orientation at an approximate speed of 20 - 30 km/h [12 - 18 mph]).
● Both SRS curtain shield airbags may also deploy in the event of a severe
frontal collision.

461-1. For safe use
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■Conditions under which the SRS airbags may deploy (inflate), other than
a collision
The SRS front airbags and SRS curtain shield airbags may also deploy if a
serious impact occurs to the underside of your vehicle. Some examples are
shown in the illustration.
■ Types of collisions that may not deploy the SRS airbags (SRS front air-
bags)
The SRS front airbags do not generally infl ate if the vehicle is involved in a
side or rear collision, if it rolls over, or if it is involved in a low-speed frontal
collision. But, whenever a collision of any type causes sufficient forward
deceleration of the vehicle, deployment of the SRS front airbags may occur.
● Hitting a curb, edge of pavement or hard
surface
● Falling into or jumping over a deep hole
● Landing hard or falling
● Collision from the side
● Collision from the rear
● Vehicle rollover

942-1. Plug-in hybrid system
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Plug-in hybrid system features
The illustration is an example for explanation and may differ from the
actual item.
Gasoline engine
Electric motor (traction motor)
The plug-in hybrid system is a system excellent in both econom-
ical efficiency of electric vehicles and practicality of hybrid vehi-
cles.
● EV driving can be performed using electricity charged from an
external power source.*
● If the amount of electricity remaining in the hybrid battery (traction
battery) becomes low, the vehicle is automatically controlled in
such a way that it can be driven as a hybrid vehicle through the
joint use of the gasoline engine.
*: The EV driving range will vary in accordance with conditions such as
vehicle speed, the amount of charge remaining in the hybrid battery
(traction battery) and the usage of the air conditioning system. The gaso-
line engine may also be used simultaneously in accordance with driving
conditions.
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1002-1. Plug-in hybrid system
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■If the plug-in hybrid system operation mode cannot be changed
In the following situations, the plug-in hybrid system operation mode cannot
be changed even if the EV/HV mode selection switch or EV City mode switch
is pressed. (In this case, the warning message is displayed on the multi-infor-
mation display when the switch is pressed.)
●When electricity needed for EV driving is not remaining (when in EV/EV City
mode)
●When the traction battery is almost completely charged (hybrid battery [trac-
tion battery] charge mode)
■When EV City mode is canceled
When EV City mode is canceled, either automatically or by pressing the EV
City mode switch, while the accelerator pedal is depressed, the drive torque
and vehicle speed may increase even if the accelerator pedal is maintained
at a fixed position. When EV City mode is canceled, a buzzer will sound and
the EV City mode indicator will flash and go off.
■When switching from EV mode to another mode using the switch
When the power switch is turned off, operation mode switching is canceled
and the system returns to EV mode the next time the vehicle is started.
■Hybrid battery (traction battery) charge mode
●The following may occur to protect the system, etc.
• Cannot switch to hybrid battery (traction battery) charge mode or cannot
cancel it
• Gasoline engine does not start or stops even after switching to hybrid bat-
tery (traction battery) charge mode
●If a load to the system is large, such as when the power consumption of the
air conditioning system is large or when the temperature of the engine cool-
ant is high, it may take longer time than usual to charge using the hybrid bat-
tery (traction battery) charge mode, or charging to the hybrid battery
(traction battery) may not be performed.

1082-1. Plug-in hybrid system
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Plug-in hybrid system precautions
The illustration is an example for explanation and may differ from the
actual item.
Take care when handling the hybrid system, as it contains a high
voltage system (about 600V at maximum) as well as parts that
become extremely hot when the hybrid system is operating.
Obey the caution labels attached to the vehicle.
Caution label
Charging inlet
Service plug
Air conditioning compressor
Power control unit and DC/DC
converterElectric motor (traction motor)
High voltage cables (orange)
Onboard traction battery char-
ger
Hybrid battery (traction bat-
tery)1
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1102-1. Plug-in hybrid system
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■If a warning light comes on, a warning message is displayed or the 12-
volt battery is disconnected
The hybrid system may not start. In that case, try to start the system again. If
the “READY” indicator does not come on, contact any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
■Running out of fuel
When the vehicle has run out of fuel and the hybrid system cannot be started,
refuel the vehicle with at least enough gasoline to make the low fuel level
warning light (P. 717) go off. If there is only a small amount of fuel, the
hybrid system may not be able to start. (The standard amount of fuel is about
7.5 L [2.0 gal., 1.7 Imp.gal.], when the vehicle is on a level surface. This value
may vary when the vehicle is on a slope. Add extra fuel when the vehicle is
inclined.)
■Electromagnetic waves
●High voltage parts and cables on the hybrid vehicles incorporate electro-
magnetic shielding, and therefore emit approximately the same amount of
electromagnetic waves as conventional gasoline powered vehicles or home
electronic appliances.
●Your vehicle may cause sound interference in some third party-produced
radio parts.
■Effect of magnetic forces
If objects that generate strong magnetic forces, such as large speakers, are
placed inside the luggage compartment or installed nearby, the generated
magnetic forces may negatively affect the hybrid system.
■Hybrid battery (traction battery) (lithium-ion battery)
The hybrid battery (traction battery) has a limited service life.
The hybrid battery (traction battery) capacity (the ability to hold a charge)
reduces with time and use in the same way as other rechargeable batteries.
The extent at which capacity reduces changes drastically depending on the
environment (ambient temperature, etc.) and usage conditions, such as how
the vehicle is driven and how the hybrid battery (traction battery) is charged.
This is a natural characteristic of lithium-ion batteries, and is not a malfunc-
tion. Also, even though the distance that can be driven in EV mode decreases
when the hybrid battery (traction battery) capacity reduces, vehicle perfor-
mance does not significantly become worse.
In order to reduce the possibility of the capacity reducing, follow the directions
listed on P. 162, “Capacity reduction of the hybrid battery (traction battery)”.
■Starting the hybrid system in an extremely cold environment
When the hybrid battery (traction battery) is extremely cold (below approxi-
mately -30C [-22F]) under the influence of the outside temperature, it may
not be possible to start the hybrid system. In this case, try to start the hybrid
system again after the temperature of the hybrid battery increases due to the
outside temperature increase etc.