2020 TOYOTA PRIUS C coolant

4898-2. Steps to take in an emergency
8
When trouble arises
PRIUS c_U
Warning message and warning buzzer list
Warning messageDetails/Actions
Indicates a malfunction in the hybrid systemA buzzer sounds in accordance with the warn-
ing message that is displayed.
 Immediately stop the vehicle in a safe place
and contact your Toyota dealer.
Indicates that the high engine coolant tempera-
ture is too high
A buzzer also sounds.
 Immediately stop the vehicle in a safe
place. ( P. 529)
Indicates abnormal engine oil pressure
The warning message is shown if the engine oil
pressure is too low.
A buzzer also sounds.
 Immediately stop the vehicle in a safe place
and contact your Toyota dealer.
Indicates a malfunction in the LDA (Lane Depar-
ture Alert) system
A buzzer also sounds.
 Have the vehicle inspected by your Toyota
dealer.
Indicates a malfunction in the PCS (Pre-Collision
System)
A buzzer also sounds.
 Have the vehicle inspected by your Toyota
dealer.
(Flashes)

5298-2. Steps to take in an emergency
8
When trouble arises
PRIUS c_U
● ( P. 489) is shown on the mu lti-information display.
● The hybrid system overheat warning message ( P. 493) is shown
on the multi-information display.
● Steam comes out f rom under the hood.
■If is shown on the mult i-information display
Stop the vehicle in a safe place and turn off the air conditioning
system, and then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has
cooled down sufficiently,
inspect the hoses and radia-
tor core (radiator) for any
leaks. Radiator
Cooling fan
If a large amount of coolant
leaks, immediately contact
your Toyota dealer.
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
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5308-2. Steps to take in an emergency
PRIUS c_U
The coolant level is satisfac-
tory if it is between the
“FULL” and “LOW” lines on
the reservoir.Reservoir
“FULL” line
“LOW” line
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the hybrid system and turn the air conditioning system on to
check that the radiator cooling fan operates and to check for
coolant leaks from t he radiator or hoses.
The fan operates when the air conditioning system is turned on immedi-
ately after a cold start. Confirm that the fan is operating by checking the
fan sound and air flow. If it is difficult to check these, turn the air condi-
tioning system on and off repeatedly.
(The fan may not operate in freezing temperatures.)
If the fan is not operating:
Stop the hybrid system immediately and contact your Toyota
dealer.
If the fan is operating:
Have the vehicle inspected at the neare st Toyota dealer.
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5318-2. Steps to take in an emergency
8
When trouble arises
PRIUS c_U■
If the hybrid system overheat warning message is shown on
the multi-information display
Stop the vehicle in a safe place.
Stop the hybrid system and carefully lift the hood.
After the hybrid system has
cooled down, inspect the
hoses and radiator core
(radiator) for any leaks. Radiator
Cooling fan
If a large amount of coolant
leaks, immediately contact
your Toyota dealer.
The coolant level is satisfac-
tory if it is between the “F”
and “L” lines on the reservoir.
Reservoir
“F” line
“L” line
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the hybrid system and chec k for the multi-information dis-
play.
If the message d oes not disappear:
Stop the hybrid system and contact your Toyota dealer.
If the message is not displayed:
Have the vehicle inspected at the neare st Toyota dealer.
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5328-2. Steps to take in an emergency
PRIUS c_U
WARNING
■To prevent an accident or injury when inspecting under the hood of
your vehicle
● If steam is seen coming from under the hood, do not open the ho od until
the steam has subsided. The engine compartment may be very hot, caus-
ing serious injuries such as burns.
● After the hybrid system has been turned off, check that on the multi-
information display and the “READY” indicator are off.
When the hybrid system is operating, the gasoline engine may au tomati-
cally start, or the cooling fan may suddenly operate even if th e gasoline
engine stops. Do not touch or approach rotating parts such as t he 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 radiator cap while the hybrid system and radi ator are
hot.
Serious injuries, such as burns, may result from hot coolant an d steam
released under pressure.
NOTICE
■ When adding engine/power control unit coolant
Wait until the hybrid system has cooled down before adding engine/power
control unit coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot hybrid sys-
tem too quickly can cause damage to the hybrid system.
■ To prevent damage to the cooling system
Observe the following precautions:
● Avoid contaminating the coolant with foreign matter (such as sa nd or dust
etc.).
● Do not use any coolant additive.

5409-1. Specifications
PRIUS c_U
Oil viscosity (0W-20 is explained here as an example):
• The 0W in 0W-20 indicates the characteristic of the oil which allows cold startability. Oils wi th a lower value before the W allow
for easier starting of the engine in cold weather.
• The 20 in 0W-20 indicates the vi scosity characteristic of the oil
when the oil is at high temperature. An oil with a higher visco sity
(one with a higher value) may be better suited if the vehicle i s
operated at high speeds, or un der extreme load conditions.
How to read oil container label:
The International Lubricant
Specification Advisory Commit-
tee (ILSAC) Certification Mark
is added to some oil containers
to help you select the oil you
should use.
Cooling system
Capacity Gasoline engine
Power control unit 5.6 qt. (5.3 L, 4.7 Imp. qt.)
1.7 qt. (1.6 L, 1.4 Imp. qt.)
Coolant type Use either of the following:
• “Toyota Super Long Life Coolant”
• A 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.

5559-1. Specifications
9
Vehicle specifications
PRIUS c_U
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sure Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1 mile or 1.5 km under
that condition
Maximum inflation
pressure The maximum cold infla
ted pressure to which
a tire may be inflated, shown on the sidewall of
the tire
Recommended infla-
tion pressure Cold tire inflation pressure recommended by a
manufacturer
Accessory weight The combined weight (in excess of those stan-
dard items which may be replaced) of hybrid
transmission, power steering, power brakes,
power windows, power seats, radio and
heater, to the extent that these items are avail-
able as factory-insta
lled equipment (whether
installed or not)
Curb weight The weight of a motor vehicle with standard
equipment, including th
e maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded vehi-
cle weight The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant
weight 150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1
* that
follows
Occupant distribution Distribution of o
ccupants in a vehicle as speci-
fied in the third column of Table 1
* below
Production options
weight The combined weight of installed regular pro-
duction options weighing over 5 lb. (2.3 kg) in
excess of the standard items which they
replace, not previously considered in curb
weight or accessory weight, including heavy
duty brakes, ride levelers, roof rack, heavy
duty battery, and special trim

590Alphabetical index
PRIUS c_U
Eco drive mode ........................ 203
Electric power steering ........... 265
Electronic keyIf the electronic key does not operate properly ........... 520
Emergency flashers Switch ................................... 468
Emergency, in case of
If a warning buzzer sounds ........................ 480, 488
If a warning light
turns on .............................. 480
If a warning message is displayed ............................ 488
If the electronic key does not operate properly ........... 520
If the hybrid system will
not start .............................. 518
If the vehicle becomes stuck ................................... 533
If the vehicle 12-volt battery is discharged .......... 522
If the vehicle is trapped
in rising water ..................... 471
If you have a flat tire ............ 505
If you lose your keys ............. 122
If you think something is wrong.................................. 479
If your vehicle has to be stopped in an
emergency.......................... 469
If your vehicle needs to be towed ............................. 472
If your vehicle overheats ....... 529 Engine
Compartment ........................ 422
Hood ..................................... 419
How to start the hybrid system ....... ................. 188, 192
Identification number ............ 537
If the hybrid system will not start .............................. 518
Ignition switch ............... 188, 192
Overheating .......................... 529
Power switch ................ 188, 192
Engine coolant Capacity................................ 540
Checking............................... 426
Preparing and checking before winter ...................... 274
Engine oil
Capacity................................ 539
Checking............................... 423
Preparing and checking before winter ...................... 274
Engine/power control unit coolant
Capacity................................ 540
Checking............................... 426
Preparing and checking before winter ...................... 274
EPS ........................................... 265
EV drive mode ......................... 199
Event data recorder................... 11
Exclusive jump starting terminal .................... 522
E