ignition TOYOTA PRIUS PLUG-IN HYBRID 2020 Owners Manual

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Prius Plug-in Hybrid_OM_OM47D72E_(EE)
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3. Instrument cluster
Combination meter ............204
Warning lights and
indicators .........................214
Main display .......................222
Multi-information display ....230
Head-up display .................264
Energy monitor/
consumption screen ........271
4-1. Key information
Keys ...................................278
4-2. Opening, closing and
locking the doors
Side doors..........................283
Back door...........................288
Smart entry & start
system .............................293
4-3. Adjusting the seats
Front seats .........................339
Rear seats .........................341
Head restraints ..................343
4-4. Adjusting the steering
wheel and mirrors
Steering wheel ...................346
Inside rear view mirror .......348
Outside rear view
mirrors .............................350
4-5. Opening and closing the
windows
Power windows ..................352
5-1. Before driving
Driving the vehicle ............. 358
Cargo and luggage............ 370
Trailer towing..................... 372
5-2. Driving procedures
Power (ignition) switch ...... 373
Hybrid transmission........... 379
Turn signal lever................ 385
Parking brake .................... 386
5-3. Operating the lights
and wipers
Headlight switch ................ 387
AHS (Adaptive High-beam
System) ........................... 391
Fog light switch ................. 397
Windshield wipers and
washer ............................ 398
5-4. Refueling
Opening the fuel tank
cap .................................. 401
3Instrument cluster
4Operation of each
component
5Driving

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5Driving
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
5-1. Before driving
Driving the vehicle ............. 358
Cargo and luggage ............ 370
Trailer towing ..................... 372
5-2. Driving procedures
Power (ignition) switch ....... 373
Hybrid transmission ........... 379
Turn signal lever ................ 385
Parking brake .................... 386
5-3. Operating the lights
and wipers
Headlight switch ................ 387
AHS (Adaptive High-beam
System) ........................... 391
Fog light switch .................. 397
Windshield wipers and
washer ............................. 398
5-4. Refueling
Opening the fuel tank
cap ................................... 4015-5. 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 .............. 566

3735-2. Driving procedures
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
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Driving
Power (ignition) switch
Check that the charging cable is disconnected. (P. 165)
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. 380)
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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3755-2. Driving procedures
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
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Driving
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. 106
■Electronic key battery depletion
P. 280
■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 -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.
Changing power switch modes
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3785-2. Driving procedures
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
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. 224) 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
any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer 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 any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer immediately.

4025-4. Refueling
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
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 stat ic electricity. It is important to
discharge static electricity before re fueling 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.
Fuel contains substances that are harmful if inhaled.
● Do not smoke while refueling the vehicle.
Doing so may cause the fuel to ignite and cause a fire.
● 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 pr event fuel overflowing from the fuel
tank:
● Securely insert the fuel nozzle into the fuel filler neck.
● Stop filling the tank after the fuel nozzle automatically clicks off.
● Do not top off the fuel tank.
NOTICE
■Refueling
Do not spill fuel during refueling.
Doing so may damage the vehicle, such as causing the emission control
system to operate abnormally or damaging fuel system components or the
vehicle’s painted surface.
■ Notice about fuel
 P. 1 1 4

6327-3. Do-it-yourself maintenance
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
WARNING
The engine compartment contains many mechanisms and fluids that may
move suddenly, become hot, or become el ectrically 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. 223)
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.
● Take care because brake fluid can harm your hands or eyes and damage
painted surfaces. If fluid gets on your hands or in your eyes, flush the
affected area with clean water immediately. If you still experience discom-
fort, consult a doctor.
■ 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. 643)
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.
from getting in your eyes.

7648-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
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 any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
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 any autho-
rized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
WARNING
■ To prevent an accident or injury when inspecting under the hood of
your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
● 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. 223) 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.
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7769-1. Specifications
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
*: The fluid capacity is the quantity of reference.
If replacement is necessary, contact any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
Cooling system
Capacity*
Gasoline
engine6.2 L (6.6 qt., 5.5 Imp.qt.)
Power
control unit1.5 L (1.6 qt., 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
Gap0.9 mm (0.035 in.)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

803Alphabetical index
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Emergency brake signal ......... 560
Emergency flashers................. 704
Emergency brake signal ....... 560
Emergency tire puncture
repair kit ................................. 731
Energy monitor ................ 233, 272
Engine
Accessory mode ................... 375
Compartment ........................ 637
Engine switch ........................ 373
Exhaust gas precautions......... 50
Hood ..................................... 634
How to start the hybrid
system ................................ 373
Identification number............. 772
If the hybrid system will not
start..................................... 749
If your vehicle has to be
stopped in an emergency ... 705
Ignition switch (power
switch) ................................ 373
Overheating .......................... 761
Power switch ......................... 373
Engine coolant ......................... 641
Capacity ................................ 776
Checking ............................... 641
Preparing and checking
before winter....................... 566Engine oil ................................. 638
Capacity ................................ 773
Checking ............................... 638
Oil pressure warning light ..... 715
Preparing and checking
before winter....................... 566
Engine switch (power
switch) .................................... 373
Auto power off function ......... 375
Changing the power switch
modes................................. 375
If your vehicle has to be
stopped in an emergency ... 705
Starting the hybrid system .... 373
EPS (Electronic Power
Steering)................................. 560
Function ................................ 560
Warning light ......................... 715
EV City mode switch ................. 98
EV driving range ...................... 119
EV mode ..................................... 95
EV/HV mode selection
switch ....................................... 98
Exhaust gas precautions .......... 50