oil level TOYOTA COROLLA HYBRID 2021 Owners Manual (in English)

5TABLE OF CONTENTS
COROLLA HV_U
1
2
3
4
5
6
7
8
9
10
Cleaning the hybrid battery (trac- tion battery) air intake vent and
filter .................................. 455
Electronic key battery ......... 459
Checking and replacing fuses ......................................... 461
Light bulbs .......................... 463
8-1. Essential information Emergency flashers ........... 470
If your vehicle has to be stopped in an emergency .............. 471
If the vehicle is trapped in rising water ................................ 472
8-2. Steps to take in an emergency If your vehicle needs to be towed......................................... 473
If you think something is wrong ......................................... 476
If a warning light turns on or a warning buzzer sounds .... 478
If a warning message is dis- played .............................. 487
If you have a flat tire (vehicles without spare tire) ............ 490
If you have a flat tire (vehicles with a spare tire) .............. 501
If the hybrid system will not start ......................................... 509
If you lose your keys .......... 510
If the fuel filler door cannot be opened ............................. 511
If the electronic key does not operate properly ............... 511
If the 12-volt battery is dis- charged ............................ 513
If your vehicle overheats .... 517
If the vehicle becomes stuck ......................................... 5209-1. Specifications
Maintenance data (fuel, oil level, etc.) .................................. 524
Fuel information ................. 531
Tire information .................. 533
9-2. Customization Customizable features ....... 544
9-3. Initialization Items to initialize ................ 552
10-1. For owners Reporting safety defects for U.S. owners ............................. 554
Seat belt instructions for Cana- dian owners (in French) ... 554
SRS airbag instructions for Canadian owners (in French)......................................... 556
What to do if... (Troubleshooting) ......................................... 564
Alphabetical Index.............. 567
8When trouble arises
9Vehicle specifications
10For owners
Index

952-1. Instrument cluster
COROLLA HV_U
2
Vehicle status information and indicators
vehicle’s systems.
*1: These lights come on when the power switch is turned to ON to
indicate that a system check is
being performed. They will turn
off after the hybrid system is
started, or after a few seconds.
(U.S.A.)
Brake system warning
light
*1 (  P.478)
(Red)
(Canada)
Brake system warning
light
*1 (  P.478)
(Yellow)
Brake system warning
light
*1 ( P.478)
High coolant temperature
warning light
*2 (  P.478)
Hybrid system overheat
warning light
*2 (  P.479)
Charging system warning
light
*1 (  P.479)
Low engine oil pressure
warning light
*2 (  P.479)
(U.S.A.)
Malfunction indicator
lamp
*1 ( P.479)
(Canada)
Malfunction indicator
lamp
*1 ( P.479)
SRS warning light
*1
(  P.480)
(U.S.A.)
ABS warning light*1
(  P.480)
(Canada)
ABS warning light*1
(  P.480)
Brake Override System
warning light/Drive-Start
Control warning light
*2
(  P.480)
(Red)
Electric power steering
system warning light
*1
(  P.481)
(Yellow)
Electric power steering
system warning light
*1
(  P.481)
Low fuel level warning
light ( P.481)
Driver’s and front passen-
ger’s seat belt reminder
light ( P.481)
Rear passengers’
seat belt reminder
lights ( P.482)
Tire pressure warning
light
*1 (if equipped)
(  P.482)
(Orange)
LTA indicator ( P.482)
(Flashes)
RCTA OFF indicator*1 (if
equipped) ( P.483)
(Flashes
or illumi- nates)PCS warning light*1
(  P.483)
Slip indicator
*1 (  P.483)
(Flashes)
(U.S.A.)
Parking brake indicator
(  P.484)
(Flashes)
(Canada)
Parking brake indicator
( P.484)
(Flashes)
Brake hold operated indi-
cator
*1( P.484)

2044-5. Using the driving support systems
COROLLA HV_U• Vehicle speed is approximately 32
mph (50 km/h) or more.
*1
• System recognizes white (yellow) lane lines or a course*2. (When a
white [yellow] line or course*2 is
recognized on only one side, the
system will operat e only for the
recognized side.)
• Width of traffic lane is approxi- mately 9.8 ft. ( 3 m) or more.
• Turn signal lever is not operated.
(Vehicle with BSM : Except when
another vehicle is in the lane on
the side where the turn signal was
operated)
• Vehicle is not being driven around
a sharp curve.
• No system malfunctions are detected. ( P.206)
*1: The function opera tes even if the
vehicle speed is less than
approximately 32 mph (50 km/h)
when the lane centering function
is operating.
*2: Boundary between asphalt and the side of the road, such as
grass, soil, or a curb
●Steering assist function
This function oper ates when all of
the following conditions are met in
addition to the operation conditions
for the lane departure alert function.
• Setting for “Steering Assist” in of the multi-information display is
set to “ON”. ( P.544)
• Vehicle is not accelerated or decelerated by a fixed amount or
more.
• Steering wheel is not operated with a steering force level suitable
for changing lanes.
• ABS, VSC, TRAC and PCS are not operating.
• TRAC or VSC is not turned off.
• Hands off steering wheel warning
is not displayed. ( P.205)
●Vehicle sway warning function
This function oper ates when all of the following conditions are met.
• Setting for “Sway Warning” in
of the multi-information display is
set to “ON”. ( P.544)
• Vehicle speed is approximately 32
mph (50 km/h) or more.
• Width of traffic lane is approxi- mately 9.8 ft. (3 m) or more.
• No system malfunctions are detected. ( P.206)
●Lane centering function
This function operates when all of
the following conditions are met.
• LTA is turned on.
• Setting for “Steering Assist” and “Lane Center” in of the
multi-information display are set to
“ON”. ( P.544)
• This function recognizes white (yellow) lane lines or the position
of a preceding v ehicle (except
when the preceding vehicle is
small, such as a motorcycle).
• The dynamic radar cruise control
with full-speed ran ge is operating
in vehicle-to-vehicle distance con-
trol mode.
• Width of traffic lane is approxi- mately 10 to 13 ft. (3 to 4 m).
• Turn signal lever is not operated.
• Vehicle is not being driven around
a sharp curve.
• No system malfunctions are
detected. ( P.206)
• Vehicle does not accelerate or decelerate by a fixed amount or
more.
• Steering wheel is not operated with a steering force level suitable
for changing lanes.
• ABS, VSC, TRAC and PCS are
not operating.
• TRAC or VSC is not turned off.
• Hands off steering wheel warning
is not displayed. ( P.205)
• The vehicle is being driven in the
center of a lane.
• Steering assist function is not operating.

2474-6. Driving tips
COROLLA HV_U
4
Driving
 Use fluids that are appropriate
to the prevailing outside tem-
peratures.
• Engine oil
• Engine/power control unit coolant
• Washer fluid
Have a service technician
inspect the condition of the
12-volt battery.
 Have the vehicle fitted with
four snow tires or purchase a
set of tire chains for the front
tires.
Ensure that all tires are the same
size and brand, and that chains
match the size of the tires.
Perform the following according
Winter driving tips
Carry out the necessary
preparations and inspec-
tions before driving the
vehicle in winter. Always
drive the vehicle in a man-
ner appropriate to the pre-
vailing weather conditions.
Pre-winter preparations
WA R N I N G
■Driving with snow tires
Observe the following precautions
to reduce the risk of accidents.
Failure to do so m ay result in a
loss of vehicle control and cause
death or serious injury.
●Use tires of the size specified.
●Maintain the recommended
level of air pressure.
●Do not drive in excess of 75
mph (120 km/h), regardless of
the type of snow tires being
used.
●Use snow tires on all, not just
some wheels.
■Driving with tire chains
Observe the following precautions
to reduce the risk of accidents.
Failure to do so may result in the
vehicle being unable to be driven
safely, and may cause death or
serious injury.
●Do not drive in excess of the
speed limit specifi ed for the tire
chains being used, or 30 mph
(50 km/h), whichever is lower.
●Avoid driving on bumpy road
surfaces or over potholes.
●Avoid sudden acceleration,
abrupt steering, sudden brak-
ing and shifting operations that
cause sudden engine braking.
●Slow down sufficiently before
entering a curve to ensure that
vehicle control is maintained.
●Do not use LTA (Lane Tracing
Assist) system.
NOTICE
■Repairing or replacing snow
tires (vehicles with a tire pres-
sure warning system)
Request repairs or replacement of
snow tires from Toyota dealers or
legitimate tire retailers.
This is because the removal and
attachment of snow tires affects
the operation of the tire pressure
warning valves and transmitters.
Before driving the vehicle

4277-2. Maintenance
COROLLA HV_U
7
Maintenance and care
Engine oil
Is the engine oil at
the correct level?
(  P.434)
Exhaust sys-
temThere should not
be any fumes or
strange sounds.
Radiator/con-
denser
The radiator and
condenser should
be free from for-
eign objects.
( P.437)
Washer fluid
Is there sufficient
washer fluid?
( P.440)
Vehicle interior
ItemsCheck points
Accelerator
pedal
The accelerator
pedal should move
smoothly (without
uneven pedal effort
or catching).
Brake pedal
• Does the brake
pedal move
smoothly?
• Does the brake pedal have
appropriate
clearance from
the floor?
( P.528)
• Does the brake pedal have the
correct amount
of free play?
( P.528)
ItemsCheck points
Brakes
• The vehicle
should not pull to
one side when
the brakes are
applied.
• The brakes should work
effectively.
• The brake pedal should not feel
spongy.
• The brake pedal should not get
too close to the
floor when the
brakes are
applied.
Head
restraints
Do the head
restraints move
smoothly and lock
securely?
Hybrid trans-
mission “Park”
mechanism
When parked on a
slope and the shift
lever is in P, is the
vehicle securely
stopped?
Indica-
tors/buzzersDo the indicators
and buzzers func-
tion properly?
LightsDo all the lights
come on?
Parking brake
• Does the park-ing brake oper-
ate normally?
• When parked on a slope and the
parking brake is
on, is the vehicle
securely
stopped?
ItemsCheck points

4307-3. Do-it-yourself maintenance
COROLLA HV_U
7-3.Do-it-yourself maintenance
Do-it-yourself ser vice
precautions
If you perform maintenance
by yourself, be sure to fol-
low the correct procedure
as given in these sections.
Maintenance
ItemsParts and tools
12-volt bat-
tery condi-
tion
( P.439)
•Warm water
• Baking soda
•Grease
• Conventional
wrench (for terminal
clamp bolts)
Brake fluid
level
( P.438)
• FMVSS No.116
DOT 3 or SAE
J1703 brake fluid
FMVSS No.116
DOT 4 or SAE
J1704 brake fluid
• Rag or paper towel
• Funnel (used only for adding brake
fluid)
Engine/pow
er control
unit cool-
ant level
( P.436)
• “Toyota Super Long
Life Coolant” or a
similar high quality
ethylene gly-
col-based non-sili-
cate, non-amine,
non-nitrite and
non-borate coolant
with long-life hybrid
organic acid tech-
nology
For the U.S.A.:
“Toyota Super Long
Life Coolant” is
pre-mixed with 50%
coolant and 50%
deionized water.
For Canada:
“Toyota Super Long
Life Coolant” is
pre-mixed with 55%
coolant and 45%
deionized water.
• Funnel (used only for adding coolant)
Engine oil
level
( P.434)
• “Toyota Genuine
Motor Oil” or equiva-
lent
• Rag or paper towel
• Funnel (used only for adding engine
oil)
Fuses
( P.461)• Fuse with same
amperage rating as
original
Hybrid bat-
tery (trac-
tion battery)
air intake
vent
( P.455)
• Vacuum cleaner,
etc.
• Phillips screwdriver
ItemsParts and tools

4347-3. Do-it-yourself maintenance
COROLLA HV_U
Washer fluid tank ( P.440)
Engine coolant reservoir ( P.436)
Fuse boxes ( P.461)
Engine oil level dipstick ( P.435)
Engine oil filler cap ( P.435)
Power control unit coolant reservoir ( P.436)
Brake fluid reservoir ( P.438)
12-volt battery ( P.439)
Radiator ( P.437)
Condenser ( P.437)
Electric cooling fans
With the engine at operating temperature and turned off,
check the oil level on the dip-
stick.
Engine compar tment
Components
Checking and adding the
engine oil

4357-3. Do-it-yourself maintenance
COROLLA HV_U
7
Maintenance and care
■Checking the engine oil
1 Park the vehicle on level
ground. After warming up the
engine and turning off the
hybrid system, wait more
than 5 minutes for the oil to
drain back into the bottom of
the engine.
2 Holding a rag under the end,
pull the dipstick out.
3 Wipe the dipstick clean.
4 Reinsert the dipstick fully.
5 Holding a rag under the end,
pull the dipstick out and
check the oil level.
Low
Normal
Excessive
The shape of the dipstick may differ
depending on the type of vehicle or
engine.
6Wipe the dipstick and reinsert
it fully.
■Checking the oil type and
preparing the item needed
Make sure to check the oil type
and prepare the items needed
before adding oil.
 Engine oil selection
P.526
 Oil quantity (Low  Full)
1.6 qt. (1.5 L, 1.3 Imp. qt.)
 Item
Clean funnel
■Adding engine oil
If the oil level is below or near
the low level mark, add engine
oil of the same type as that
already in the engine.
1 Remove the oil filler cap by
turning it counterclockwise.
2 Add engine oil slowly, check-
ing the dipstick.
3 Install the oil filler cap by
turning it clockwise.
■Engine oil consumption
A certain amount of engine oil will
be consumed while driving. In the
following situatio ns, oil consump-

4367-3. Do-it-yourself maintenance
COROLLA HV_Ution may increase, and engine oil
may need to be refilled in between
oil maintenance intervals.
●When the engine is new, for
example directly after purchasing
the vehicle or after replacing the
engine
●If low quality oil or oil of an inap-
propriate viscosity is used
●When driving at high engine
speeds or with a
heavy load, or
when driving while accelerating or
decelerating frequently
●When leaving the engine idling for
a long time, or wh en driving fre-
quently through heavy traffic
■Engine coolant reservoir
The coolant level is satisfactory
if it is between the “MAX” and
“MIN” lines on the reservoir
when the engine is cold.
Reservoir cap
“MAX” line
“MIN” line
If the level is on or below the “MIN”
line, add coolant up to the “MAX”
line. ( P.517)
■Power control unit coolant
reservoir
The coolant level is satisfactory
if it is between the “FULL” and
“LOW” lines on the reservoir
when the hybrid system is cold.
WA R N I N G
■Used engine oil
●Used engine oil contains poten-
tially harmful contaminants
which may cause skin disorders
such as inflammation and skin
cancer, so care should be taken
to avoid prolonged and
repeated contact. To remove
used engine oil from your skin,
wash thoroughly with soap and
water.
●Dispose of used oil and filters
only in a safe an d acceptable
manner. Do not dispose of used
oil and filters in household trash,
in sewers or onto the ground.
Call your Toyota dealer, service
station or auto parts store for
information concerning recy-
cling or disposal.
●Do not leave used engine oil
within the rea ch of children.
NOTICE
■To prevent serious engine
damage
Check the oil level on a regular
basis.
■When replacing the engine oil
●Be careful not to spill engine oil
on the vehicle components.
●Avoid overfilling, or the engine
could be damaged.
●Check the oil level on the dip-
stick every time you refill the
vehicle.
●Be sure the engin e oil filler cap
is properly tightened.
Checking the coolant

4878-2. Steps to take in an emergency
COROLLA HV_U
8
When trouble arises■Warning messages
The warning messages explained
below may differ from the actual
messages according to operation
conditions and vehicle specifica-
tions.
■Warning buzzer
A buzzer may sound when a mes-
sage is displayed.
The buzzer may not be audible if the
vehicle is in a noisy location or if the
audio system volume is high.
■If “Engine Oil Level Low Add or
Replace” is displayed
The engine oil level is low. Check
WA R N I N G
Your vehicle has also been
equipped with a TPMS (tire pres-
sure warning system) malfunc-
tion indicator to indicate when the
system is not opera ting properly.
The TPMS (tire pressure warning
system) malfunction indicator is
combined with th e low tire pres-
sure telltale (tire pressure warning
light). When the system detects a
malfunction, the telltale will flash
for approximately one minute and
then remain continuously illumi-
nated. This sequence will con-
tinue upon subsequent vehicle
start-ups as long as the malfunc-
tion exists. When the malfunction
indicator is illu minated, the sys-
tem may not be able to detect or
signal low tire pressure as
intended.
TPMS (tire pressure warning sys-
tem) malfunctions may occur for a
variety of reasons, including the
installation of replacement or
alternate tires or wheels on the
vehicle that prevent the TPMS
(tire pressure warning system)
from functioning properly. Always
check the TPMS (tire pressure
warning system) malfunction tell-
tale after replacing one or more
tires or wheels on your vehicle to
ensure that the r eplacement or
alternate tires and wheels allow
the TPMS (tire pressure warning
system) to continue to function
properly.
NOTICE
■To ensure the tire pressure
warning system operates
properly (vehicles with a tire
pressure warning system)
Do not install tires with different
specifications or makers, as the
tire pressure warning system may
not operate properly.
If a war ning message
is displayed
The multi-information dis-
play shows warnings for
system malfunctions and
incorrectly performed oper-
ations, and messages that
indicate a need for mainte-
nance. When a message is
displayed, perform the
appropriate corrective
action for the message.
If a warning message is dis-
played again after the
appropriate actions have
been performed, contact
your Toyota dealer.
Additionally, if a warning
light comes on or flashes at
the same time that a warn-
ing message is displayed,
take the appropriate correc-
tive action for the warning
light. ( P.478)