ECU TOYOTA COROLLA HATCHBACK 2020 (in English) Service Manual

1113-2. Opening, closing and locking the doors
COROLLA H/B_U
3
Before driving
●When the lock op eration is per-
formed using the lock sensor, rec-
ognition signals will be shown up
to two consecutive times. After
this, no recogniti on signals will be
given.
●If the door handle becomes wet
while the electronic key is within
the effective ran ge, the door may
lock and unlock repeatedly. In that
case, follow the fo llowing correc-
tion procedures to wash the vehi-
cle:
• Place the electronic key in a loca-
tion 6 ft. (2 m) or more away from
the vehicle. (Take care to ensure
that the key is not stolen.)
• Set the electronic key to bat- tery-saving mode to disable the
smart key system. ( P.109)
●If the electronic key is inside the
vehicle and a door handle
becomes wet during a car wash, a
message may be shown on the
multi-information display and a
buzzer will sound outside the vehi-
cle. To turn off the alarm, lock all
the doors.
●The lock sensor may not work
properly if it com es into contact
with ice, snow, mud, etc. Clean
the lock sensor and attempt to
operate it again.
●A sudden handle operation or a
handle operation immediately
after entering the effective range
may prevent the doors from being
unlocked. Touch the door unlock
sensor and check that the doors
are unlocked bef ore pulling the
door handle again.
●If there is another electronic key in
the detection area, it may take
slightly longer to unlock the doors
after the door handle is gripped.
■When the vehicle is not driven
for extended periods
●To prevent theft of the vehicle, do
not leave the electronic key within
6 ft. (2 m) of the vehicle.
●The smart key system can be deactivated in advance. (
P.531)
●Setting the electronic key to bat-
tery-saving mode helps to reduce
key battery depletion. ( P.109)
■To operate the system properly
Make sure to carry the electronic
key when operating the system. Do
not get the electronic key too close
to the vehicle when operating the
system from the out side of the vehi-
cle.
Depending on the position and hold-
ing condition of the electronic key,
the key may not be detected cor-
rectly and the system may not oper-
ate properly. (The alarm may go off
accidentally, or the door lock pre-
vention function m ay not operate.)
■If the smart key system does
not operate properly
●Locking and unlocking the doors:
 P. 5 0 0
●Starting the engine: P. 5 0 1
■Customization
Some functions can be customized.
(  P.531)
■If the smart key system has
been deactivated in a custom-
ized setting
●Locking and unlocking the doors:
Use the wireless remote control or
mechanical key. ( P.101, 500)
●Starting the engi ne and changing
engine switch modes: P. 5 0 1
●Stopping the engine: P. 1 4 3

1173-3. Adjusting the seats
COROLLA H/B_U
3
Before driving
WARNING
■When folding the rear seat-
backs down
●Do not fold the seatbacks down
while driving.
●Stop the vehicle on level
ground, set the parking brake
and shift the shift lever to P
(continuously variable transmis-
sion) or N (manual transmis-
sion).
●Do not allow anyo ne to sit on a
folded seatback or in the lug-
gage compartment while driv-
ing.
●Do not allow child ren to enter
the luggage compartment.
●Do not allow any one to sit on
the rear center seat if the rear
right seat is folded down, as the
seat belt buckle for the rear cen-
ter seat belt is then concealed
under the folded seat and can-
not be used.
●Be careful not to get your hand
caught when folding the rear
seatbacks.
●Adjust the position of the front
seats before folding down the
rear seatbacks so that the front
seats do not interfere with the
rear seatbacks when folding
down the rear seatbacks.
■After returning the rear seat-
back to the upright position
●Make sure that the seatback is
securely locked in position by
lightly pushing it back and forth.
If the seatback is not securely
locked, the red marking will be
visible on the seatback lock
release lever. Make sure that the
red marking is not visible.
●Check that the seat belts are
not twisted or caught in the
seatback.
If the seat belt gets caught
between the seatback’s securing
hook and latch, it may damage
the seat belt.

1213-4. Adjusting the steering wheel and mirrors
COROLLA H/B_U
3
Before driving
3-4.Adjusting the steering wheel and mirrors
1 Hold the steering wheel and
push the lever down.
2 Adjust to the ideal position by
moving the steering wheel
horizontally and vertically.
After adjustment, pull the lever up
to secure the steering wheel.
To sound the horn, press on or
close to the mark.
Steering wheel
Adjustment procedure
WARNING
■Caution while driving
Do not adjust the steering wheel
while driving.
Doing so may cause the driver to
mishandle the vehicle and cause
an accident, resul ting in death or
serious injury.
■After adjusting the steeringw heel
Make sure that the steering wheel
is securely locked.
Otherwise, the steering wheel
may move suddenly, possibly
causing an accident, and resulting
in death or serious injury. Also,
the horn may not sound if the
steering wheel is not securely
locked.
Horn

1344-1. Before driving
COROLLA H/B_U
WARNING
●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 shift 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.
■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 acciden ts 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.

1394-1. Before driving
COROLLA H/B_U
4
Driving
total load capacity (vehicle
capacity weight) of B lb. (kg),
the available amount of cargo
and luggage load capacity will
be C lb. (kg) as follows:
B
*2 lb. (kg) - A*1 lb. (kg) = C*3 lb.
(kg)
*1: A =Weight of people
*2: B =Total load capacity
*3: C =Available cargo and luggage load
In this condition, if 3 more passen-
gers with the combined weight of D
lb. (kg) get on, the available cargo
and luggage load will be reduced E
lb. (kg) as follows:
C lb. (kg) - D*4 lb. (kg) = E*5 lb.
(kg)
*4: D =Additional weight of people
*5: E =Available cargo and luggage load
As shown in the example above,
if the number of occupants
increases, the cargo and lug-
gage load will be reduced by an
amount that equals the
increased weight due to the
additional occupants. In other
words, if an increase in the num-
ber of occupants causes an
excess of the total load capacity
(combined weight of occupants
plus cargo and luggage load),
you must reduce the cargo and
luggage on your vehicle.
WARNING
■Things that must not be car-
ried in the luggage compart-
ment
The following things may cause a
fire if loaded in the luggage com-
partment:
●Receptacles containing gaso-
line
●Aerosol cans
■Storage precautions
Observe the following precau-
tions.
Failure to do so may prevent the
pedals from being depressed
properly, may block the driver’s
vision, or may res ult in items hit-
ting the driver or passengers, pos-
sibly causing an accident.
●Stow cargo and luggage in the
luggage compartment when-
ever possible.
●Do not place cargo or luggage
in or on the follo wing locations.
• At the feet of the driver
• On the front passenger or rear seats (when stacking items)
• On the luggage cover
• On the instrument panel
• On the dashboard
●Secure all items in the occupant
compartment.
■Capacity and distribution
●Do not exceed the maximum
axle weight rating or the total
vehicle weight rating.

1624-3. Operating the lights and wipers
COROLLA H/B_U
1With the headlights on, push
the lever away from you to
turn on the high beams.
Pull the lever to ward you to the
center position to turn the high
beams off.
2 Pull the lever toward you and
release it to flash the high
beams once.
You can flash the high beams with
the headlights on or off.
AFS (Adaptive Front-lighting
System) secures excellent visi-
bility at intersections and on
curves by automatically adjust-
ing the direction of the light axis
of the headlights according to
vehicle speed and the degree of
the tire’s angle as controlled by
steering input.
AFS operates at speeds of approxi-
mately 6 mph (10 km/h) or higher.
■Customization
Some functions can be customized. (
 P.531)
Turning on the high beam
headlights
AFS (Adaptive Front-light-
ing System) (if equipped)

1664-3. Operating the lights and wipers
COROLLA H/B_U
*: If equipped
1(U.S.A) or (Canada)
Turns the front fog lights off
2 Turns the front fog lights
on
■Fog lights can be used when
The headlights are on in low beam.
Operating the lever oper-
ates the wipers or washer as fol-
lows.
1 (U.S.A.) or (Canada)
Intermittent windshield wiper
operation
2 (U.S.A.) or (Canada)
Low speed windshield wiper
Fog light switch*
The fog lights secure excel-
lent visibility in difficult driv-
ing conditions, such as in
rain and fog.
Operating instructions
Windshield wipers and
washer
Operating the lever can use
the windshield wipers or the
washer.
NOTICE
■When the windshield is dry
Do not use the wipers, as they
may damage the windshield.
Operating the wiper lever

1704-4. Refueling
COROLLA H/B_U
4-4.Refueling
Turn the engine switch off and
ensu

re that all the doors an
d
windows are closed.
 Co

nfirm the type of fuel.
■Fuel types
 P. 5 1 8
■Fuel tank opening for unleaded
gas

oline
To help prevent incorrect fueling,
your vehicle has a fuel tank opening
that only accommodates the spe-
cial nozzle on unle aded fuel pumps.
■If the malfunction indicator
l

amp illuminates
The malfunction indicator lamp may
illuminate erroneous ly if refueling is
performed repeatedly when the fuel
tank is nearly full.
Opening the fuel tank
cap
Perform the following steps
to open the fuel tank cap:
Before refueling the vehi-
cle
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 sur-
face to discharge an
y staticelec

tricity. It is important to dis-
charge static electricity before
refueling because sparks result-
ing from static electricity
can
c

ause 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 f uel tank cap
is
lo

osened. Wait until the sound
cannot be heard before fully
removing the cap. In ho
t
weathe

r, pressurized fuel may
spray out the filler neck
andcause in

jury.
●Do not allow anyone that has
no
t discharged static electri
city
fro

m their body to come close
toan

open fuel tank.
●Do not inhale vaporized fuel.
Fuel contains substances that
are harmful if inhaled.
●Do not smoke while refuelingthe vehicle.
Doing so may cause the f
uel to
ign

ite and cause a fire.
●Do not return to the vehicle or
touch any person or object that
is statically charged.
Th
is may cause static electri
cityto build

up, resulting in a possi-
ble ignition hazard.
■When refueling
Observe the following precautions
to prevent fuel overflowing from
the fuel tank:
●Securely insert the fuel nozzle
into the fuel filler nec
k.
●Stop filling the tank after the fuelnozzle automatically clicks off.

2314-5. Using the driving support systems
COROLLA H/B_U
4
Driving
*1: The area between the side of the vehicle and 1.6 ft. (0.5 m) f rom the side
of the vehicle cannot be detected.
*2: The greater the difference in speed between your vehicle and t he
detected vehicle is, the farthe r away the vehicle will be detec ted, causing
the outside r ear view mirror indicato r to illuminate or flash.
■The Blind Spot Monitor is oper-
ational when
The Blind Spot Monitor is opera-
tional when all of the following con-
ditions are met:
●The Blind Spot Monitor is on.
●The shift lever is in a position
other than R.
●The vehicle speed is greater than
approximately 10 mph (16 km/h).
■The Blind Spot Monitor will
detect a vehicle when
The Blind Spot Mon itor will detect a
vehicle present in the detection area
in the followin g situations:
●A vehicle in an adjacent lane over-
takes your vehicle.
●You overtake a vehicle in adjacent
lane slowly.
●Another vehicle enters the detec-
tion area when it changes lanes.
■Conditions under which the
Blind Spot Monitor will not
detect a vehicle
The Blind Spot Monitor is not
designed to detect the following
types of vehicles and/or objects:
●Small motorcycles, bicycles,
pedestrians, etc.*
●Vehicles traveling in the opposite
direction
●Guardrails, walls, signs, parked
vehicles and similar stationary
objects
*
●Following vehicles that are in the
same lane*
●Vehicles traveling 2 lanes away
from your vehicle*
●Vehicles which are being over-
taken rapidly by your vehicle*
*
: Depending on the conditions, detection of a v ehicle and/or
object may occur.
■Conditions under which the
Blind Spot Monitor may not
function correctly
●The Blind Spot Monitor may not
detect vehicles corr ectly in the fol-
lowing situations:
• When the sensor is misaligned
due to a strong impact to the sen-
sor or its surrounding area
• When mud, snow, ice, a sticker,
etc. is covering the sensor or sur-
rounding area on the rear bumper
• When driving on a road surface
that is wet with standing water
during bad weather, such as
heavy rain, snow, or fog
• When multiple vehicles are
approaching with only a small gap
between each vehicle
• When the distance between your
vehicle and a following vehicle is
short
• When there is a significant differ-
ence in speed between your vehi-
cle and the vehicle that enters the
detection area
• When the difference in speed between your vehicle and another
vehicle is changing
• When a vehicle enters a detection area traveling at about the same
speed as your vehicle
• As your vehicle starts from a stop, a vehicle remains in the detection
area
• When driving up and down con- secutive steep inclines, such as
hills, dips in the road, etc.
• When driving on r oads with sharp
bends, consecutive curves, or

2324-5. Using the driving support systems
COROLLA H/B_Uuneven surfaces
• When vehicle lanes are wide, or when driving on the edge of a
lane, and the vehicle in an adja-
cent lane is far away from your
vehicle
• When an accessory (such as a bicycle carrier) is installed to the
rear of the vehicle
• When there is a significant differ- ence in height between your vehi-
cle and the vehicle that enters the
detection area
• Immediately after the Blind Spot Monitor is turned on
●Instances of the Blind Spot Moni-
tor unnecessarily d etecting a vehi-
cle and/or object may increase in
the following situations:
• When the sensor is misaligned
due to a strong impact to the sen-
sor or its surrounding area
• When the distanc e between your
vehicle and a guar drail, wall, etc.
that enters the detection area is
short
• When driving up and down con- secutive steep inclines, such as
hills, dips in the road, etc.
• When vehicle lanes are narrow, or when driving on the edge of a
lane, and a vehicle traveling in a
lane other than the adjacent lanes
enters the detection area
• When driving on roads with sharp
bends, consecutive curves, or
uneven surfaces
• When the tires are slipping or
spinning
• When the distanc e between your
vehicle and a following vehicle is
short
• When an accessory (such as a bicycle carrier) is installed to the
rear of the vehicle
The rear view image is dis-
played when the shift lever is in
R and the engine switch is in
ON.
Rear view monitor sys-
tem
 Audio
The rear view monitor sys-
tem assists the driver by
displaying an image of the
view behind the vehicle with
fixed guide lines on the
screen while backing up, for
example while parking.
The screen illustrations
used in this text are
intended as examples, and
may differ from the image
that is actually displayed on
the screen.
Audio Plus or Premium
Audio
Owners of models equipped
with a navigation/multime-
dia system should refer to
the “NAVIGATION AND
MULTIMEDIA SYSTEM
OWNER’S MANUAL”.
System overview