engine TOYOTA COROLLA 2021 (in English) Workshop Manual

1544-1. Before driving
COROLLA_U
WA R N I N G
●Do not drive in excess of the
speed limit. Even if the legal
speed limit permits it, do not
drive over 85 mph (140 km/h)
unless your vehicle has
high-speed capability tires. Driv-
ing over 85 mp h (140 km/h)
may result in tire failure, loss of
control and possible injury. Be
sure to consult a tire dealer to
determine whether the tires on
your vehicle are high-speed
capability tires or not before
driving at such speeds.
■When driving on slippery
road surfaces
●Sudden braking, acceleration
and steering may cause tire
slippage and reduce your ability
to control the vehicle.
●Sudden acceleration, engine
braking due to shifting, or
changes in engine speed could
cause the vehicle to skid.
●After driving through a puddle,
lightly depress the brake pedal
to make sure that the brakes
are functioning properly. Wet
brake pads may prevent the
brakes from functioning prop-
erly. If the brakes on only one
side are wet and not functioning
properly, steering control may
be affected.
■When shifting the shift lever
●Vehicles with a continuously
variable transmission: Do not let
the vehicle roll backward while a
forward driving position is
selected, or roll forward while
the shift lever is in R.
Doing so may cause the engine
t o st all or lea d to po o r br ak e a nd
steering performance, resulting
in an accident or damage to the
vehicle.
●Vehicles with a continuously
variable transmission: Do not
shift the shift lever to P while the
vehicle is moving.
Doing so can damage the trans-
mission and may result in a loss
of vehicle control.
●Do not shift the sh ift lever to R
while the vehicle is moving for-
ward.
Doing so can damage the trans-
mission and may result in a loss
of vehicle control.
●Do not shift the shift lever to a
driving position while the vehicle
is moving backward.
Doing so can damage the trans-
mission and may result in a loss
of vehicle control.
●Moving the shift lever to N while
the vehicle is moving will disen-
gage the engine from the trans-
mission. Engine braking is not
available when N is selected.
●Vehicles with a continuously
variable transmission: Be care-
ful not to shift the shift lever with
the accelerator pedal
depressed. Shifting the shift
lever to any positions other than
P or N may lead to unexpected
rapid acceleration of the vehicle
that may cause an accident and
result in death or serious injury.
■If you hear a squealing or
scraping noise (brake pad
wear indicators)
Have the brake pads checked and
replaced by your Toyota dealer as
soon as possible.
Rotor damage may result if the
pads are not replaced when
needed.
It is dangerous to drive the vehicle
when the wear limits of the brake
pads and/or those of the brake
discs are exceeded.

1554-1. Before driving
4
Driving
COROLLA_U
WA R N I N G
■When the vehicle is stopped
●Do not race the engine.
If the vehicle is in any gear other
than P (continuously variable
transmission) or N, the vehicle
may accelerate suddenly and
unexpectedly, causing an acci-
dent.
●Vehicles with a continuously
variable transmission: In order
to prevent accidents due to the
vehicle rolling away, always
keep depressing the brake
pedal while the engine is run-
ning, and apply the parking
brake as necessary.
●If the vehicle is stopped on an
incline, in order to prevent acci-
dents caused by the vehicle roll-
ing forward or backward, always
depress the brake pedal and
securely apply the parking
brake as needed.
●Avoid revving or racing the
engine.
Running the engine at high
speed while the vehicle is
stopped may cause the exhaust
system to overheat, which could
result in a fire if combustible
material is nearby.
■When the vehicle is parked
●Do not leave glasses, cigarette
lighters, spray cans, or soft
drink cans in the vehicle when it
is in the sun.
Doing so may result in the fol-
lowing:
• Gas may leak from a cigarette lighter or spray can, and may
lead to a fire.
• The temperature inside the vehicle may cause the plastic
lenses and plastic material of
glasses to deform or crack.
• Soft drink cans may fracture, causing the contents to spray
over the interior of the vehicle,
and may also cause a short cir-
cuit in the vehicl e’s electrical
components.
●Do not leave cigarette lighters in
the vehicle. If a cigarette lighter
is in a place such as the glove
box or on the floor, it may be lit
accidentally when luggage is
loaded or the se at is adjusted,
causing a fire.
●Do not attach adhesive discs to
the windshield or windows. Do
not place containers such as air
fresheners on the instrument
panel or dashboard. Adhesive
discs or containers may act as
lenses, causing a fire in the
vehicle.
●Do not leave a door or window
open if the curved glass is
coated with a metallized film
such as a silver-colored one.
Reflected sunlight may cause
the glass to act a s a lens, caus-
ing a fire.
●Vehicles with a continuously
variable transmission: Always
apply the parking brake, shift
the shift lever to P, stop the
engine and loc k the vehicle.
Do not leave the vehicle unat-
tended while the engine is run-
ning.
If the vehicle is parked with the
shift lever in P but the parking
brake is not set, the vehicle may
start to move, possibly leading
to an accident.
Vehicles with a manual trans-
mission: Always apply the park-
ing brake, stop the engine and
lock the vehicle.
Do not leave the vehicle unat-
tended while the engine is run-
ning.

1564-1. Before driving
COROLLA_U
WA R N I N G
●Do not touch the exhaust pipes
while the engine is running or
immediately after turning the
engine off.
Doing so may cause burns.
■When taking a nap in the vehi-
cle
Always turn the engine off. Other-
wise, if you accidentally move the
shift lever or dep ress the acceler-
ator pedal, this could cause an
accident or fire due to engine
overheating. Additionally, if the
vehicle is parked in a poorly venti-
lated area, exhaust gases may
collect and enter the vehicle, lead-
ing to death or a serious health
hazard.
■When braking
●When the brakes a re wet, drive
more cautiously.
Braking distance increases
when the brakes are wet, and
this may cause one side of the
vehicle to brake differently than
the other side. Also, the parking
brake may not securely hold the
vehicle.
●If the brake booster device does
not operate, do not follow other
vehicles closely and avoid hills
or sharp turns that require brak-
ing.
In this case, braking is still pos-
sible, but the brake pedal
should be depressed more
firmly than usual. Also, the brak-
ing distance will increase. Have
your brakes fixed immediately.
●Do not pump the brake pedal if
the engine stalls.
Each push on the brake pedal
uses up the reserve for the
power-assisted brakes.
●The brake system consists of 2
individual hydraulic systems; if
one of the systems fails, the
other will still ope rate. In this
case, the brake pedal should be
depressed more firmly than
usual and the braking distance
will increase. Have your brakes
fixed immediately.
■If the vehicle becomes stuck
Do not spin the wheels exces-
sively when a driven wheel is up
in the air, or the vehicle is stuck in
sand, mud, etc. This may damage
the driveline components or pro-
pel the vehicle forward or back-
ward, causing an accident.
NOTICE
■When driving the vehicle
(vehicles with a continuously
variable transmission)
●Do not depress the accelerator
and brake pedals at the same
time during driving, as this may
restrain the engine output.
●Do not use the accelerator
pedal or depress the accelera-
tor and brake pedals at the
same time to hold the vehicle on
a hill.
■When driving the vehicle
(vehicles with a manual trans-
mission)
●Do not depress the accelerator
and brake pedals at the same
time during driving, as this may
restrain the engine output.
●Do not shift gea rs unless the
clutch pedal is fully depressed.
After shifting, do not release the
clutch pedal abruptly. Doing so
may damage the clutch, trans-
mission and gears.

1574-1. Before driving
4
Driving
COROLLA_U
NOTICE
●Observe the following precau-
tions.
Failure to do so may cause
excessive premature wear or
damage to the clutch, eventu-
ally making it difficult to acceler-
ate and start off from a stop.
Have the vehicle inspected by
your Toyota dealer.
• Do not rest your foot on the clutch pedal or depress it any
time other than when shifting.
Doing so may cause clutch trou-
ble.
• Do not use any gear other than the 1st gear when starting off
and moving forward.
Doing so may damage the
clutch.
• Do not use the clutch pedal to adjust vehicle speed.
Doing so may damage the
clutch.
• When stopping the vehicle with the shift lever in a position other
than N, make sure to fully
depress the clutch pedal and
stop the vehicle using the
brakes.
●Do not shift the shift lever to R
without the vehicle completely
stopped.
Doing so may damage the
clutch, transmission and gears.
■When parking the vehicle
(vehicles with a continuously
variable transmission)
Always set the parking brake and
shift the shift lever to P. Failure to
do so may cause the vehicle to
move or the vehi cle may acceler-
ate suddenly if the accelerator
pedal is accidentally depressed.
■Avoiding damage to vehicle
parts
●Do not turn the steering wheel
fully in either direction and hold
it there for an extended period
of time.
Doing so may damage the
power steering motor.
●When driving over bumps in the
road, drive as slowly as possible
to avoid damaging the wheels,
underside of the vehicle, etc.
●For APEX models: APEX vehi-
cle height is lower than other
vehicle grades.
Driving over rough or damaged
road surfaces, as well as park-
ing blocks, curbs, and other
obstacles may cause damage
to the underside of your vehicle.
Drive carefully under rough con-
ditions to avoid damage.
■If you get a flat tire while driv-
ing
A flat or damaged tire may cause
the following situat ions. Hold the
steering wheel firmly and gradu-
ally depress the brake pedal to
slow down the vehicle.
●It may be difficult to control your
vehicle.
●The vehicle will make abnormal
sounds or vibrations.
●The vehicle will lean abnor-
mally.
Information on what to do in case
of a flat tire (
P.534)
■When encountering flooded
roads
Do not drive on a road that has
flooded after h eavy rain etc.
Doing so may cause the following
serious damage to the vehicle:
●Engine stalling

1584-1. Before driving
COROLLA_U
Cargo capacity depends on the
total weight of the occupants.
(Cargo capacity) = (Total load
capacity) — (Total weight of
occupants)
Steps for Determining Correct
Load Limit —
(1) Locate the statement “The
combined weight of occupants
and cargo should never exceed
XXX kg or XXX lbs.” on your
vehicle’s placard.
(2) Determine the combined
weight of the driver and passen-
gers that will be riding in your
vehicle.
(3) Subtract the combined
weight of the driver and passen-
gers from XXX kg or XXX lbs.
(4) The resulting figure equals
the available amount of cargo
and luggage load capacity.
For example, if the “XXX”
amount equals 1400 lbs. and
there will be five 150 lb passen-
gers in your vehicle, the amount
of available cargo and luggage
load capacity is 650 lbs. (1400 −
NOTICE
●Short in electrical components
●Engine damage caused by
water immersion
In the event that you drive on a
flooded road an d the vehicle
becomes flooded or stuck in mud
or sand, be sure to have your Toy-
ota dealer check the following:
●Brake function
●Changes in the quantity and
quality of the eng ine oil, tran-
saxle fluid, clutch fluid, etc.
●Lubricant condition for the bear-
ings and suspension joints
(where possible), and the func-
tion of all joints , bearings, etc.
Cargo and luggage
Take notice of the following
information about storage
precautions, cargo capacity
and load:
Capacity and distribution

1634-2. Driving procedures
4
Driving
COROLLA_U
4-2.Driving procedures
1Check that the parking brake
is set. ( P.180, 181)
2 Check that the shift lever is in
P (continuously variable
transmission) or N (manual
transmission).
3 Firmly depress the brake
pedal (continuously variable
transmission) or clutch pedal
(manual transmission).
4 Turn the engine switch to
START to start the engine.
■If the engine does not start
The engine immobilizer system may
not have been deactivated. ( P. 8 0 )
Contact your Toyota dealer.
■When the steering lock cannot
be released
When starting the engine, the
engine switch may seem stuck in
OFF. To free it, turn the key while
turning the steerin g wheel slightly
left and right.
1 OFF (“LOCK” position)
The steering wheel is locked and
the key can be removed. (vehicles
with a continuously variable trans-
mission: The key can be removed
only when the shift lever is in P.)
2ACC (“ACC” position)
Some electrical components such
Engine (ignition)
switch (vehicles with-
out a smart key sys-
tem)
Starting the engine
WA R N I N G
■When starting the engine
Always start the engine while sit-
ting in the driver’s seat. Do not
depress the accelerator pedal
while starting the engine under
any circumstances. Doing so may
cause an accident resulting in
death or serious injury.
NOTICE
■When starting the engine
●Do not crank the engine for
more than 30 seconds at a time.
This may overhea t the starter
and wiring system.
●Do not race a cold engine.
●If the engine becomes difficult to
start or stalls frequently, have
your vehicle checked by your
Toyota dealer immediately.
Changing the engine
switch positions

1644-2. Driving procedures
COROLLA_Uas the audio system can be used.
3
ON ( “ON” position)
All electrical com ponents can be
used.
4 START ( “START” position)
For starting the engine.
■Turning the key from ACC to
OFF
1 Shift the shift lever to P (continu-
ously variable transmission) or N
(manual transmission).
2 Push in the key and turn it to
OFF.
■Key reminder function
A buzzer sounds if the driver’s door
is opened while the engine switch is
in OFF or ACC to r emind you to
remove the key.
1 Check that the parking brake
is set. ( P.180, 181)
2 Check that the shift lever is in
P (continuously variable
transmission) or N (manual
transmission).
3 Firmly depress the brake
pedal (continuously variable
transmission) or clutch pedal
(manual transmission).
and a message will be dis-
played on the multi-information dis-
play. If it is not displayed, the
engine cannot be started.
4 Press the engine switch
shortly and firmly.
When operating the engine switch,
one short, firm press is enough. It is
not necessary to press and hold the
switch.
The engine will crank until it starts
or for up to 30 seconds, whichever
is less.
Continue depressing the brake
pedal (continuously variable trans-
mission) or clutch pedal (manual
transmission) unt il the engine is
completely started.
WA R N I N G
■Caution when driving
Do not turn the engine switch to
OFF while driving. If, in an emer-
gency, you must turn the engine
off while the vehicle is moving,
turn the engine switch only to
ACC to stop the engine. An acci-
dent may result i f the engine is
stopped while driving. ( P.502)
NOTICE
■To prevent battery discharge
Do not leave the engine switch in
ACC or ON for long periods of
time without the engine running.
Engine (ignition)
switch (vehicles with
a smar t key system)
Performing the following
operations when carrying
the electronic key on your
person starts the engine or
changes engine switch
modes.
Starting the engine

1654-2. Driving procedures
4
Driving
COROLLA_UThe engine can be started from any
engine switch mode.
■If the engine does not start
●The engine immobilizer system
may not have been deactivated.
(
 P. 8 0 )
Contact your Toyota dealer.
●If a message related to start-up is
shown on the multi-information
display, read the message and fol-
low the instructions.
■If the battery is discharged
The engine cannot be started using
the smart key system. Refer to
P.546to restart the engine.
■Electronic key battery depletion
 P. 1 1 0
■Conditions affecting operation
 P. 1 2 7
■Notes for the entry function
 P. 1 2 8
■Steering lock function
●After turning the engine switch off
and opening and closing the
doors, the steer ing wheel will be
locked due to the steering lock
function. Operating the engine
switch again automatically can-
cels the steering lock.
●When the steering lock cannot be
released, “Push Engine Switch
while Turning Steering Wheel in
Either Direction” will be displayed
on the multi-information display.
Press the engine switch shortly
and firmly while turning the steer- ing wheel left and right.
●To prevent the steering lock motor
from overheating, operation of the
motor may be suspended if the
engine is turned on and off repeat-
edly in a short period of time. In
this case, refrain from operating
the engine switch.
After about 10
seconds, the steering lock motor
will resume functioning.
■Electronic key battery
 P.489
■Operation of the engine switch
●If the switch is not pressed shortly
and firmly, the engine switch
mode may not change or the
engine may not start.
●If attempting to res tart the engine
immediately after turning the
engine switch off, the engine may
not start in some cases. After turn-
ing the engine switch off, please
wait a few seconds before restart-
ing the engine.
■Customization
If the smart key system has been
deactivated in a customized setting,
refer to P.544.
WA R N I N G
■When starting the engine
Always start the engine while sit-
ting in the driver’s seat. Do not
depress the accelerator pedal
while starting the engine under
any circumstances.
Doing so may cause an accident
resulting in death o r serious injury.

1664-2. Driving procedures
COROLLA_U
Continuously variable trans-
mission
1 Stop the vehicle completely.
2 Set the parking brake
( P.180, 181), and shift the
shift lever to P.
Check the parking brake indicator
is illuminated.
3 Press the engine switch.
The engine will stop, and the meter
display will be extinguished.
4Release the brake pedal and
check that “ACCESSORY” or
“IGNITION ON” is not shown
on the multi-information dis-
play.
Manual transmission
1 Stop the vehicle completely.
2 Set the parking brake.
( P.180, 181)
Check the parking brake indicator
is illuminated.
3Shift the shift lever to N.
( P.176)
4 Press the engine switch.
The engine will stop, and the meter
display will be extinguished.
5Release the brake pedal and
check that “ACCESSORY” or
“IGNITION ON” is not shown
on the multi-information dis-
play.
■Automatic engine shut off fea-
ture
●The vehicle is equipped with a
feature that automatically shuts off
the engine when the shift lever is
in P (continuously variable trans-
mission) or the parking brake is
set (manual transmission) with the
engine running for an extended
period.
●The engine will automatically shut
off after approxima tely 1 hour if it
has been left running while the
shift lever is in P (continuously
variable transmission) or the park-
ing brake is set (manual transmis-
sion).
●The timer for the automatic engine
shut off feature will reset if the
brake pedal (continuously variable
transmission) or th e clutch pedal
WA R N I N G
■Caution while driving
If engine failure o ccurs while the
vehicle is moving, do not lock or
open the doors until the vehicle
reaches a safe and complete
stop. Activation of the steering
lock in this circumstance may lead
to an accident, resulting in death
or serious injury.
NOTICE
■When starting the engine
●Do not race a cold engine.
●If the engine becomes difficult to
start or stalls frequently, have
your vehicle checked by your
Toyota dealer immediately.
■Symptoms indicating a mal-
function with the engine
switch
If the engine switch seems to be
operating somewh at differently
than usual, such as the switch
sticking slightly, there may be a
malfunction. Contact your Toyota
dealer immediately.
Stopping the engine

1674-2. Driving procedures
4
Driving
COROLLA_U(manual transmission) is
depressed, or if the shift lever is in
a position other than P (continu-
ously variable transmission) or the
parking brake is released (man-
ual transmission).
●After the vehicle is parked, if the
door is locked with the door lock
switch (
P.120) from the inside or
the mechanical key ( P.544) from
the outside, the automatic engine
shut off feature will be disabled.
The timer for the automatic engine
shut off feature will be re-enabled
if the driver’s door is opened.
Modes can be changed by
pressing the engine switch with
brake pedal (continuously vari-
able transmission) or clutch
pedal (manual transmission)
released. (The mode changes
each time the switch is
WA R N I N G
■Stopping the engine in an
emergency
●If you want to stop the engine in
an emergency while driving the
vehicle, press and hold the
engine switch for more than 2
seconds, or press it briefly 3
times or more in succession.
(  P.502)
However, do not touch the
engine switch while driving
except in an emergency. Turn-
ing the engine off while driving
will not cause loss of steering or
braking control, but the power
assist to thes e systems will be
lost. This will make it more diffi-
cult to steer and brake, so you
should pull over and stop the
vehicle as soon as it is safe to
do so.
●If the engine switch is operated
while the vehicle is running, a
warning message will be shown
on the multi-info rmation display
and a buzzer sounds.
●Vehicles with a continuously
variable transmission: To restart
the engine after performing an
emergency shutdown, shift the
shift lever to N and then press
the engine switch.
●Vehicles with a manual trans-
mission: To restart the engine
after performing an emergency
shutdown, depress the clutch
pedal and then press the engine
switch.
■When parking
Exhaust gases include harmful
carbon monoxide (CO), which is
colorless and odorless. Observe
the following precautions.
Failure to do so may cause
exhaust gases to enter the vehicle
and may lead to an accident
caused by light-headedness, or
may lead to death or a serious
health hazard.
●If the vehicle is in a poorly venti-
lated area or a closed area,
such as a garage, stop the
engine.
●Do not leave the vehicle with
the engine running for a long
time. If such a situation cannot
be avoided, park the vehicle in
an open space and ensure that
exhaust fumes do not enter the
vehicle interior.
●Do not leave the engine running
in an area with snow build-up,
or where it is snowing. If snow-
banks build up around the vehi-
cle while the engine is running,
exhaust gases may collect and
enter the vehicle.
Changing engine switch
modes