engine TOYOTA PRIUS C 2020 Owners Manual

TABLE OF CONTENTS6
PRIUS c_U7-1. Maintenance and care
Cleaning and protecting the vehicle exterior .......... 400
Cleaning and protecting the vehicle interior ........... 403
7-2. Maintenance Maintenance requirements ................... 409
General maintenance ........ 412
Emission inspection and maintenance (I/M)
programs ......................... 415
7-3. Do-it-yourself maintenance
Do-it-yourself service precautions ..................... 416
Hood.................................. 419
Positioning a floor jack ...... 421
Engine compartment ......... 422
12-volt battery ................... 431
Tires .................................. 435
Tire inflation pressure........ 444
Wheels .............................. 447
Air conditioning filter .......... 449
Wireless remote control/ electronic key battery ...... 451
Checking and replacing fuses ................ 454
Light bulbs ......................... 458 8-1. Essential information
Emergency flashers ........... 468
If your vehicle has to be stopped in
an emergency.................. 469
If the vehicle is trapped in rising water .................. 471
8-2. Steps to take in an emergency
If your vehicle needs to be towed ...................... 472
If you think something is wrong ........................... 479
If a warning light turns on or a warning buzzer
sounds ............................. 480
If a warning message is displayed...................... 488
If you have a flat tire .......... 505
If the hybrid system will not start ..................... 518
If the electronic key does not operate properly .......... 520
If the vehicle 12-volt
battery is discharged ....... 522
If your vehicle overheats.... 529
If the vehicle becomes stuck ................ 533
7Maintenance and care8When trouble arises

10
PRIUS c_UThe vehicle is equipped with sophisticated computers that will
record certain
data, such as:
The recorded data varies according to the vehicle grade level and options
with which it is equipped.
These computers do not record conversations or sounds, and only record
images outside of the vehicle in certain situations.
• Engine speed/Electric motor speed (traction motor speed)
• Accelerator status
• Brake status
• Vehicle speed
• Operation status of the driving assist systems, such as the AB S and pre-
collision system
• Images from the front camera (available only when certain safe ty sys-
tems are activated, which varies depending on the vehicle specifica-
tions).
●Data Transmission
Your vehicle may transmit the data recorded in these computers to Toyota
without notification to you.
●Data usage
Toyota may use the data recorded in this computer to diagnose m alfunc-
tions, conduct research and development, and improve quality.
Toyota will not disclose the recorded data to a third party exc ept:
• With the consent of the vehicle owner or with the consent of the lessee if the vehicle is leased
• In response to an official request by the police, a court of l aw or a govern-
ment agency
• For use by Toyota in a lawsuit
• For research purposes where the data is not tied to a specific vehicle or
vehicle owner
●Recorded image information can be erased by your Toyota dealer.
The image recording function can be disabled. However, if the f unction is
disabled, data from when the pre-collision system operates will not be
available.
●To learn more about the vehicle data collected, used and shared by Toy-
ota, please visit www.toyota.com/privacyvts/
.
Vehicle data recording

17Pictorial index
PRIUS c_UWindshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 214
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . P. 274
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 221
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 221
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 538
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . P. 435
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . P. 543
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 274
Checking/rotation/tire pressur e warning system . . . . . . . . .P. 435
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 505
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 419
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 419
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 539
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 529
Headlights/daytime running lights . . . . . . . . . . . . . . . . . . . . P. 208
Parking lights/front turn signal lights . . . . . . . . . . . . . P. 206, 208
Side turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 206
Front fog lights
*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 212
Front side marker lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 208
Stop lights/tail lights /rear side marker lights/
rear turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . P. 206, 208
Back-up lights
Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 208
4
5
6
7
Light bulbs of the exterior lights for driving
(Replacing method: P. 458, Watts: P. 544)
*: If equipped
8
9
10
11
12
13
14
15

76
PRIUS c_U
1-3. Hybrid system
The illustration is an example for explanation and may differ from the
actual item.
Hybrid system features
Your vehicle is a hybrid vehicle. It has characteristics differ ent
from conventional vehicles. Be sure you are closely familiar wi th
the characteristics of your veh icle, and operate it with care.
The hybrid system combines the use of a gasoline engine and
an electric motor (traction motor) according to driving condi-
tions, improving fuel efficien cy and reducing exhaust emis-
sions.
Gasoline engine Electric motor (Traction motor)12

771-3. Hybrid system
1
For safety and security
PRIUS c_U
◆When stopped/during start off
The gasoline engine stops
* when the vehicle is stopped. During
start-off, the electric motor (traction motor) drives the vehic le. At
slow speeds or when traveling down a gentle slope, the engine i s
stopped
* and the motor is used.
When the shift lever is in N, the hybrid battery (traction batt ery) is
not being charged.
*: When the hybrid battery (traction battery) requires charging o r the engine
is warming up, etc., the gasoline engine will not automatically stop.
( P. 78)
◆During normal driving
The gasoline engine is predominantly used. The electric motor
(traction motor) charges the hybr id battery (traction battery) as nec-
essary.
◆When accelerating sharply
The power of the hybrid battery (traction battery) is added to that of
the gasoline engine via the ele ctric motor (traction motor).
◆When braking (regenerative braking)
The wheels operate the electric motor (traction motor) as a pow er
generator, and the hybrid battery (traction battery) is charged.
When the gasoline engine is off while driving, a sound is produ ced to
warn pedestrians, people riding bicycles or other people and ve hicles
in the surrounding area that the vehicle is approaching. The pi tch of
the sound adjusts according to v ehicle speed. When vehicle spee d is
approximately 22 mph (35 km/h) or more, the warning system turn s
off.
Acoustic Vehicle Alerting System

781-3. Hybrid system
PRIUS c_U
■Regenerative braking
In the following situations, kinetic energy is converted to electric energy and
deceleration force can be obtained in conjunction with the rech arging of the
hybrid battery (traction battery).
● The accelerator pedal is released with the shift lever in D or B.
● The brake pedal is depressed with the shift lever in D or B.
■ EV drive indicator lamp
■ Conditions in which the gasoline engine may not stop
The gasoline engine starts and stops automatically. However, it may not stop
automatically in the following conditions:
● During gasoline engine warm-up
● During hybrid battery (traction battery) charging
● When the temperature of the hybrid battery (traction battery) is high or low
● When the heater is switched on
The EV drive indicator lamp comes on
when the vehicle is driven using only the
electric motor (traction motor) or the gas-
oline engine is stopped.
This indicator lamp will also be dis-
played when “ECO Score” or “ECO
Savings” is selected. ( P. 105)

791-3. Hybrid system
1
For safety and security
PRIUS c_U■
Charging the hybrid batt ery (traction battery)
As the gasoline engine charges the hybrid battery (traction bat tery), the bat-
tery does not need to be charged from an outside source. Howeve r, i f t h e
vehicle is left parked for a long time the hybrid battery (trac tion battery) will
slowly discharge. For this reason, be sure to drive the vehicle at least once
every few months for at least 30 minutes or 10 miles (16 km). I f the hybrid
battery (traction battery) becomes fully discharged and you are unable to start
the hybrid system, contact your Toyota dealer.
■ Charging the 12-volt battery
P. 525
■ After the 12-volt battery has discharged or when the terminal h as been
removed and installed during exchange, etc.
The gasoline engine may not stop even if the vehicle is being driven by the
hybrid battery (traction battery). If this continues for a few days, contact your
Toyota dealer.

801-3. Hybrid system
PRIUS c_U■
Sounds and vibrations sp ecific to a hybrid vehicle
There may be no engine sound or vibration even though the vehic le is able to
move with the “READY” indicator is illuminated. For safety, app ly the parking
brake and make sure to shift the shift lever to P when parked.
The following sounds or vibrations may occur when the hybrid sy stem is
operating and are not a malfunction:
● Motor sounds may be heard from the engine compartment.
● Sounds may be heard from the hybrid battery (traction battery) under the
rear seats when the hybrid system starts or stops.
● Relay operating sounds such as a snap or soft clank will be emi tted from the
hybrid battery (traction battery), under the rear seats, when the hybrid sys-
tem is started or stopped.
● Sounds from the hybrid system may be heard when the back door is open.
● Sounds may be heard from the transmission when the gasoline engine
starts or stops, when driving at low speeds, or during idling.
● Engine sounds may be heard when accelerating sharply.
● Sounds may be heard due to regenerative braking when the brake pedal is
depressed or as the accelerator pedal is released.
● Vibration may be felt when the gasoline engine starts or stops.
● Cooling fan sounds may be heard from the air intake vent on the side of the
lower part of the rear left seat.
■ Acoustic Vehicle Alerting System
In the following cases, the Acoustic Vehicle Alerting System so und may be
difficult for pedestrians, people riding bicycles or other people and vehicles in
the surrounding area to hear:
● When there is a lot of noise in the vicinity
● When it is raining or during strong winds
● When in the area surrounding the rear of the vehicle, rather than in front of
the vehicle
■ Maintenance, repair, recycling, and disposal
Contact your Toyota dealer regarding maintenance, repair, recyc ling and dis-
posal. Do not dispose of the vehicle yourself.

1012. Instrument cluster
2
Instrument cluster
PRIUS c_U
The brightness of the instrument panel lights can be adjusted by turn-
ing the dial.
Brighter
Darker
■The meters and multi-informat ion display illuminate when
Vehicles without a smart key system
The power switch is in the “ON” position.
Vehicles with a smart key system
The power switch is in ON mode.
■ The brightness of the instrument panel lights
When the tail lights are turned on, the brightness will be redu ced slightly
unless the control dial is turned up fully.
■ Outside temperature display
●In the following situations, the correct outside temperature ma y not be dis-
played, or the display may take longer than normal to change.
• When stopped, or driving at low speeds (less than 16 mph [25 k m/h])
• When the outside temperature has changed suddenly (at the entr ance/
exit of a garage, tunnel, etc.)
● When “ ” or “E” is displayed, the system may be malfunctioning.
Take your vehicle to your Toyota dealer.
■ Engine speed
On hybrid vehicles, engine speed is precisely controlled in ord er to help
improve fuel efficiency and reduce exhaust emissions etc.
There are times when the engine speed that is displayed may dif fer even
when vehicle operation and driving conditions are the same.
■ Unit of measure of the sp eedometer (on some models)
P. 108
Instrument panel light control
1
2

1022. Instrument cluster
PRIUS c_U
NOTICE
■To prevent damage to the engine and its components
This vehicle is not installed with an engine coolant temperatur e gauge.
Instead, is shown on the multi-information display. The engine may
be overheating if is shown on the multi-information display. I n this
case, immediately stop the vehicle in a safe place. ( P. 529)