ignition TOYOTA PRIUS PRIME 2021 Owners Manual (in English)

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PRIUS PRIME_OM_OM47D71U_(U)
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5
4-1. Key information
Keys .................................. 276
4-2. Opening, closing and
locking the doors
Side doors ......................... 281
Back door .......................... 287
Smart key system.............. 292
4-3. Adjusting the seats
Front seats ........................ 301
Rear seats ......................... 303
Head restraints .................. 305
4-4. Adjusting the steering
wheel and mirrors
Steering wheel .................. 308
Inside rear view mirror....... 310
Outside rear view
mirrors ............................. 312
4-5. Opening and closing the
windows
Power windows ................. 3145-1. Before driving
Driving the vehicle ............. 320
Cargo and luggage ............ 332
Vehicle load limits .............. 335
Trailer towing ..................... 336
Dinghy towing .................... 337
5-2. Driving procedures
Power (ignition) switch....... 338
Hybrid transmission ........... 345
Turn signal lever ................ 351
Parking brake .................... 352
5-3. Operating the lights
and wipers
Headlight switch ................ 353
AHB (Automatic High
Beam) .............................. 358
Fog light switch .................. 363
Windshield wipers and
washer ............................. 365
5-4. Refueling
Opening the fuel tank
cap................................... 371
4Operation of each
component5Driving

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PRIUS PRIME_OM_OM47D71U_(U)
5Driving
5-1. Before driving
Driving the vehicle ............. 320
Cargo and luggage ........... 332
Vehicle load limits ............. 335
Trailer towing..................... 336
Dinghy towing ................... 337
5-2. Driving procedures
Power (ignition) switch ...... 338
Hybrid transmission........... 345
Turn signal lever................ 351
Parking brake .................... 352
5-3. Operating the lights
and wipers
Headlight switch ................ 353
AHB (Automatic High
Beam) ............................. 358
Fog light switch ................. 363
Windshield wipers and
washer ............................ 365
5-4. Refueling
Opening the fuel tank
cap .................................. 3715-5. Using the driving support
systems
Toyota Safety Sense 2.0... 376
PCS (Pre-Collision
System)........................... 384
LTA (Lane Tracing
Assist) ............................. 395
RSA (Road Sign
Assist) ............................. 410
Dynamic radar cruise
control with full-speed
range............................... 414
Driving mode select
switch .............................. 430
BSM
(Blind Spot Monitor) ........ 432
• The Blind Spot Monitor
function ......................... 437
• The Rear Cross Traffic
Alert function ................. 440
Intuitive parking assist....... 445
Parking Support Brake
function ........................... 455
S-APGS (Simple
Advanced Parking
Guidance System) .......... 467
Driving assist systems ...... 501
5-6. Driving tips
Winter driving tips ............. 507

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PRIUS PRIME_OM_OM47D71U_(U)
5-2. Driving procedures
Power (ignition) switch
Check that the charging cable is disconnected. (P. 1 4 6 )
Check that the parking brake is set.
Firmly depress the brake pedal.
and a message will be dis-
played on the multi-information dis-
play.
When the shift position is N, the
hybrid system cannot start. Shift
the shift position to P when starting
the hybrid system. (P. 3 4 6 )
Press the power switch shortly
and firmly.
When operating the power switch,
one short, firm press is enough. It
is not necessary to press and hold
the switch.
If the “READY” indicator turns on,
the hybrid system will operate nor-
mally.
Continue depressing the brake pedal until the “READY” indicator is illumi-
nated.
The hybrid system can be started from any power switch mode.
Check that the “READY” indicator is illuminated.
If the “READY” indicator changes from a flashing light to a solid light and
the buzzer sounds, the hybrid system is starting normally.
The vehicle will not move when the “READY” indicator is off.
The vehicle can move when the “READY” indicator is on even if the engine
is stopped. (The gasoline engine starts or stops automatically in accor-
dance with the state of the vehicle.)
Performing the following operations when carrying the elec-
tronic key on your person starts the hybrid system or changes
power switch modes.
Starting the hybrid system
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2
3
4
5

340
PRIUS PRIME_OM_OM47D71U_(U)
5-2. Driving procedures
Modes can be changed by pressing the power switch with the brake
pedal released. (The mode changes each time the switch is pressed.)
Off
The emergency flashers can be
used.
ACCESSORY mode
Some electrical components such
as the audio system can be used.
“Accessory” is displayed on the
main display.
ON mode
All electrical components can be
used.
“Ignition ON” is displayed on the
main display.
■Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minutes or ON
mode (the hybrid system is not operating) for more than an hour with the shift
position in P, the power switch will automatically turn off. However, this func-
tion cannot entirely prevent the 12-volt battery discharge. Do not leave the
vehicle with the power switch in ACCESSORY or ON mode for long periods
of time when the hybrid system is not operating.
■Sounds and vibrations specific to a hybrid vehicle
P. 96
■Electronic key battery depletion
P. 278
■When the ambient temperature is low, such as during winter driving con-
ditions
●When starting the hybrid system, the flashing time of the “READY” indicator
may be long. Leave the vehicle as it is until the “READY” indicator is steady
on, as steady means the vehicle is able to move.
●When the hybrid battery (traction battery) is extremely cold (below approxi-
mately -22°F [-30°C]) 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.
Changing power switch modes
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2
3

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PRIUS PRIME_OM_OM47D71U_(U)
5-2. Driving procedures
NOTICE
■To prevent 12-volt battery discharge
●Do not leave the power switch in ACCESSORY or ON mode for long peri-
ods of time without the hybrid system on.
●If “Accessory”, “Ignition ON” or mileage display (P. 213) is displayed on
the main display while the hybrid system is not operating, the power switch
is not off. Exit the vehicle after turning the power switch off.
■When starting the hybrid system
If the hybrid system becomes difficult to start, have your vehicle checked by
your Toyota dealer immediately.
■Symptoms indicating a malfunction with the power switch
If the power switch seems to be operating somewhat differently than usual,
such as the switch sticking slightly, there may be a malfunction. Contact
your Toyota dealer immediately.

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PRIUS PRIME_OM_OM47D71U_(U)
5-4. Refueling
WARNING
■When refueling the vehicle
Observe the following precautions while refueling the vehicle. Failure to do
so may result in death or serious injury.
●After exiting the vehicle and before opening the fuel door, touch an
unpainted metal surface to discharge any static electricity. It is important to
discharge static electricity before refueling because sparks resulting from
static electricity can cause fuel vapors to ignite while refueling.
●Always hold the grips on the fuel tank cap and turn it slowly to remove it.
A whooshing sound may be heard when the fuel tank cap is loosened.
Wait until the sound cannot be heard before fully removing the cap. In hot
weather, pressurized fuel may spray out of the filler neck and cause injury.
●Do not allow anyone that has not discharged static electricity from their
body to come close to an open fuel tank.
●Do not inhale vaporized fuel.
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4800470011[
●Do not smoke while refueling the vehicle.
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●Do not return to the vehicle or touch any person or object that is statically
charged.
This may cause static electricity to build up, resulting in a possible ignition
hazard.
■When refueling
Observe the following precautions to prevent fuel overflowing from the fuel
tank:
●Securely insert the fuel nozzle into the fuel filler neck.
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57004c00460044004f004f005c00030046004f004c0046004e[s off.
●Do not top off the fuel tank.

PRIUS PRIME_OM_OM47D71U_(U)
5957-3. Do-it-yourself maintenance
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Maintenance and care
Tire inflation
pressure
(P. 623)• Tire pressure gauge
• Compressed air source
Washer fluid
(P. 6 1 2 )• Water or washer fluid containing antifreeze (for win-
ter use)
• Funnel (used only for adding water or washer fluid)
WARNING
The engine compartment contains many mechanisms and fluids that may
move suddenly, become hot, or become electrically energized. To avoid death
or serious injury, observe the following precautions.
■When working on the engine compartment
●Make sure that the “Accessory”, “Ignition ON” or mileage display
(P. 210) on the main display and the “READY” indicator are both off.
●Keep hands, clothing and tools away from the moving fan.
●Be careful not to touch the engine, power control unit, radiator, exhaust
manifold, etc. right after driving as they may be hot. Oil and other fluids
may also be hot.
●Do not leave anything that may burn easily, such as paper and rags, in the
engine compartment.
●Do not smoke, cause sparks or expose an open flame to fuel. Fuel fumes
are flammable.
●Be extremely cautious when working on the 12-volt battery. It contains poi-
sonous and corrosive sulfuric acid.
■When working near the electric cooling fans or radiator grille
Be sure the power switch is off.
With the power switch in ON mode, the electric cooling fans may automati-
cally start to run if the air conditioning is on and/or the coolant temperature
is high. (P. 606)
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.
from getting in your eyes.
ItemsParts and tools

7248-2. Steps to take in an emergency
PRIUS PRIME_OM_OM47D71U_(U)
After stopping the hybrid system and waiting for 5 minutes or
more, start the hybrid system again and check if “Hybrid System
Overheated” is shown on the multi-information display.
If the message does not disappear:
Stop the hybrid system and contact your Toyota dealer.
If the message is not displayed:
The hybrid system temperature has dropped and the vehicle may
be driven normally.
However, if the message appears again frequently, contact your To y o t a
dealer.
WARNING
■To prevent an accident or injury when inspecting under the hood of
your vehicle
Observe the following precautions.
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03004400560003004500580055005100560011[
●If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot.
●After the hybrid system has been turned off, check that the “Accessory”,
“Ignition ON” or mileage display (P. 210) on the main display and the
“READY” indicator are off.
When the hybrid system is operating, the gasoline engine may automati-
cally start, or the cooling fans may suddenly operate even if the gasoline
engine stops. Do not touch or approach rotating parts such as the fan,
which may lead to fingers or clothing (especially a tie, a scarf or a muffler)
getting caught, resulting in serious injury.
●Do not loosen the coolant reservoir caps while the hybrid system and radi-
ator are hot.
High temperature steam or coolant could spray out.
6

PRIUS PRIME_OM_OM47D71U_(U)
7359-1. Specifications
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Vehicle specifications
How to read oil container label:
API registered mark is added to
some oil containers to help you
select the oil you should use.
*: The coolant capacity is a reference quantity.
If replacement is necessary, contact your Toyota dealer.
Cooling system
Capacity*
Gasoline
engine6.6 qt. (6.2 L, 5.5 Imp.qt.)
Power
control unit1.6 qt. (1.5 L, 1.3 Imp.qt.)
Coolant type
Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-
based non-silicate, non-amine, non-
nitrite, and non-borate coolant with
long-life hybrid organic acid technology
Do not use plain water alone.
Ignition system (spark plug)
MakeDENSO FC16HR-CY9
Gap0.035 in. (0.9 mm)
NOTICE
■Iridium-tipped spark plugs
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030057004b004800030056005300440055004e00030053004f[ug gap.

793Alphabetical index
PRIUS PRIME_OM_OM47D71U_(U)
Engine
Accessory mode ................... 340
Compartment ........................ 600
Engine switch........................ 338
Exhaust gas precautions ........ 56
Hood ..................................... 597
How to start the hybrid
system ................................ 338
Identification number ............ 732
If the hybrid system will not
start .................................... 709
If your vehicle has to be
stopped in an emergency ... 665
Ignition switch (power
switch) ................................ 338
Overheating .......................... 721
Power switch......................... 338
Engine coolant ......................... 604
Capacity ................................ 735
Checking ............................... 604
Preparing and checking
before winter....................... 507
Engine oil ................................. 601
Capacity ................................ 734
Checking ............................... 601
Oil pressure warning light ..... 674
Preparing and checking
before winter....................... 507
Engine switch (power
switch) .................................... 338
Auto power off function ......... 340
Changing the power switch
modes................................. 340
If your vehicle has to be
stopped in an emergency ... 665
Starting the hybrid system .... 338EPS (Electronic Power
Steering) ................................ 502
Function ................................ 502
Warning light......................... 675
EV auto mode ............................ 87
EV driving range ...................... 108
EV mode ..................................... 87
EV/HV mode selection
switch ....................................... 90
Event data recorder (EDR)........ 11
Exhaust gas precautions .......... 56
Flat tire ..................................... 692
Floor mats .................................. 26
Fluid
Brake .................................... 737
Transmission ........................ 736
Washer ................................. 612
Fog lights ................................. 363
Replacing light bulbs ............ 660
Switch ................................... 363
Footwell lights ......................... 541
Front doors .............................. 281
Front fog lights ........................ 363
Replacing light bulbs ............ 660
Switch ................................... 363
Front passenger occupant
classification system .............. 50
Front passenger’s seat
belt reminder light................. 677
Front seat concentrated
airflow mode
(S-FLOW) ....................... 514, 526
F