key TOYOTA COROLLA HATCHBACK 2021 (in English) Workshop Manual

5048-2. Steps to take in an emergency
COROLLA H/B_U
■When the electronic key does
not work properly
●Make sure that the smart key sys-
tem has not been deactivated in
the customization setting. If it is
off, turn the function on. (Custom-
izable features P.535)
●Check if battery-saving mode is
set. If it is set, cancel the function.
( P.109)
Use the mechanical key
( P.100) in order to perform the
following operations:
If you lose your keys
New genuine mechanical
keys can be made by your
Toyota dealer using another
mechanical key and the key
number stamped on your
key number plate.
Keep the plate in a safe
place such as your wallet,
not in the vehicle.
NOTICE
■When an electronic key is lost
If the electronic key remains lost,
the risk of vehicle theft increases
significantly. Visit your Toyota
dealer immediately with all
remaining electronic keys that
were provided with your vehicle.
If the electronic key
does not operate prop-
erly
If communication between
the electronic key and vehi-
cle is interrupted ( P.109)
or the electronic key cannot
be used because the battery
is depleted, the smart key
system and wireless remote
control cannot be used. In
such cases, the doors can
be opened and the engine
can be started by following
the procedure below.
NOTICE
■In case of a smart key system
malfunction or other
key-related problems
Take your vehicle with all the elec-
tronic keys provided with your
vehicle to your Toyota dealer.
Locking and unlocking
the doors

5058-2. Steps to take in an emergency
COROLLA H/B_U
8
When trouble arises
1 Locks all the doors
2 Unlocks all the doors
Turning the key unlocks the driver’s
door. Turning the key again unlocks
the other doors.
■Key linked functions
1 Closes the windows (turn and
hold)
*
2Opens the windows (turn and
hold)
*
*
: This setting must be customized at your Toyota dealer.
1 Vehicles with a continuously
variable transmission:
Ensure that the shift lever is
in P and depress the brake
pedal.
Vehicles with a manual trans-
mission: Shift the shift lever
to N and depress the clutch
pedal.
2 Touch the Toyota emblem
side of the electronic key to
the engine switch.
When the electronic key is
detected, a buzzer sounds and the
engine switch will turn to ON.
When the smart key system is
deactivated in customization set-
ting, the engine switch will turn to
WARNING
■When using the mechanical
key and operating the power
windows
Operate the power window after
checking to make sure that there
is no possibility of any passenger
having any of their body parts
caught in the window.
Also, do not allow children to
operate the mechanical key. It is
possible for children and other
passengers to get caught in the
power window.
Starting the engine

5068-2. Steps to take in an emergency
COROLLA H/B_UACC.
3
Firmly depress the brake
pedal (continuously variable
transmission) or clutch pedal
(manual transmission) and
check that is shown on
the multi-information display.
4 Press the engine switch
shortly and firmly.
In the event that the engine still
cannot be started, contact your
Toyota dealer.
■Stopping the engine
Shift the shift lever to P (continu-
ously variable transmission) or N
(manual transmission) and press
the engine switch as you normally
do when stopping the engine.
■Electronic key battery
As the above procedure is a tempo-
rary measure, it is recommended
that the electronic key battery be
replaced immediately when the bat-
tery is depleted. ( P.456)
■Changing engine switch modes
Release the brake pedal (continu-
ously variable transmission) or
clutch pedal (manual transmission)
and press the engine switch in step
3 above.
The engine does not start and
modes will be changed each time
the switch is pressed. ( P.145)
If the vehicle batter y
is discharged
The following procedures
may be used to start the
engine if the vehicle’s bat-
tery is discharged.
You can also call your Toy-
ota dealer or a qualified
repair shop.

5078-2. Steps to take in an emergency
COROLLA H/B_U
8
When trouble arises
If you have a set of jumper (or
booster) cables and a second
vehicle with a 12-volt battery,
you can jump start your vehicle
by following the steps below.
1 Vehicles with an alarm
( P.66): Confirm that the
electronic key is being car-
ried.
When connecting the jumper (or booster) cables, depending on the
situation, the alarm may activate
and doors locked. (
P. 6 7 )2 Open the hood. ( P.433)
3 Connect a positive jumper cable cl amp to on your vehicle and
connect the clamp on the other end of the positive cable to on
the second vehicle. Then, connec t a negative cable clamp to
on the second vehicle and connect the clamp at the other end of
the negative cable to .
Positive (+) battery terminal (your vehicle)
Positive (+) battery terminal (second vehicle)
Negative (-) battery terminal (second vehicle)
Solid, stationary, unpainted metallic point away from the battery
and any moving parts as shown in the illustration
4 Start the engine of the sec-
ond vehicle. Increase the
engine speed slightly and maintain at that level for
approximately 5 minutes to
Restarting the engine

5088-2. Steps to take in an emergency
COROLLA H/B_U
recharge the battery of your
vehicle.
5 Open and close any of the
doors of your vehicle with the
engine switch OFF.
6 Maintain the engine speed of
the second vehicle and start
the engine of your vehicle by
turning the engine switch to
ON.
7 Once the vehicle’s engine
has started, remove the
jumper cables in the exact
reverse order from which
they were connected.
Once the engine starts, have the
vehicle inspected at your Toyota
dealer as soon as possible.
■Starting the engine when the
battery is discharged
The engine cannot be started by
push-starting.
■To prevent battery discharge
●Turn off the headlights and the
audio system while the engine is
off.
●Turn off any unnecessary electri-
cal components when the vehicle
is running at a low speed for an
extended period, such as in heavy
traffic.
■When the battery is removed or
discharged
●Information stored in the ECU is
cleared. When the battery is
depleted, have the vehicle
inspected at your Toyota dealer.
●Some systems may require initial-
ization. ( P.543)
■When removing the battery ter-
minals
When the battery terminals are
removed, the information stored in
the ECU is cleared. Before remov-
ing the battery te rminals, contact
your Toyota dealer.
■Charging the battery
The electricity stored in the battery
will discharge gradually even when
the vehicle is not in use, due to nat-
ural discharge and the draining
effects of certain electrical appli-
ances. If the vehicle is left for a long
time, the battery may discharge,
and the engine may be unable to
start. (The battery recharges auto-
matically during driving.)
■When recharging or replacing
the battery
●In some cases, it may not be pos-
sible to unlock the doors using the
smart key system when the bat-
tery is discharged. Use the wire-
less remote control or the
mechanical key to lock or unlock
the doors.
●The engine may not start on the
first attempt after the battery has
recharged but will start normally
after the second attempt. This is
not a malfunction.
●The engine switch mode is memo-
rized by the vehicle. When the
battery is reconnected, the system
will return to the mode it was in
before the battery was dis-
charged. Before disconnecting the
battery, turn the engine switch off.
If you are unsure what mode the
engine switch was in before the
battery discharged, be especially
careful when reconnecting the
battery.
■When replacing the battery
●Use a battery that conforms to
European regulations.
●Use a battery that the case size is
same as the previous one (LN2),
20 hour rate capacity (20HR) is

5379-2. Customization
COROLLA H/B_U
9
Vehicle specifications
*2: The default setting varies according to country.
*3: 7-inch display
*4: If equipped
■Head-up display* (  P. 8 9 )
*: If equipped
■Door lock ( P.101, 105, 504)
FunctionDefault settingCustomized setting
Head-up displayOnOff—O—
Gauge informationTachometer
Eco Driving Indica-
tor
*—O—
No content
Route guidance to desti-
nation/street name
*OnOff—O—
Driving support system
displayOnOff—O—
Compass*OnOff—O—
Audio system operation
status
*OnOff—O—
FunctionDefault settingCustomized setting
Unlocking using a
mechanical key
Driver’s door unlocked in
one step, all doors
unlocked in two step
All doors unlocked in one step——O
Automatic door locking
function
*
Shift position linked door
locking opera- tionOff
O—OSpeed linked door locking operation
Automatic door unlock-
ing function
*
Shift position linked door unlocking operationOff
O—ODriver’s door linked door unlocking operation

5389-2. Customization
COROLLA H/B_U
*: Vehicles with a continuously variable transmission
■Smart key system and wireless remote control (P.101, 108)
■Smart key system ( P.101, 108)
■Wireless remote control ( P.99, 101, 105)
FunctionDefault settingCustomized setting
Operating signal (Buzz-
ers)5OffO—O1 to 7
Operation signal (Emer-
gency flashers)OnOffO—O
Time elapsed before
automatic door lock
function is activated if
door is not opened after
being unlocked
60 seconds
Off
O—O30 seconds
120 seconds
Open door warning
buzzerOnOff——O
FunctionDefault settingCustomized setting
Smart key systemOnOff——O
Smart door unlockingDriver’s doorAll the doorsO—O
Time elapsed before
unlocking all the door
when gripping and hold-
ing the driver’s door
handle
2.0 seconds
Off
——O1.5 seconds
2.5 seconds
Number of consecutive
door lock operations2 timesAs many as
desired——O
FunctionDefault settingCustomized setting
Wireless remote controlOnOff——O
Unlocking operation
Driver’s door unlocked in
one step, all doors
unlocked in two step
All doors unlocked in one stepO—O

5399-2. Customization
COROLLA H/B_U
9
Vehicle specifications
■Power windows ( P.125)
■Automatic light control system ( P.160)
■Lights (P.160)
Theft deterrent panic
modeOnOff——O
Locking operation when
door openedOnOffO—O
FunctionDefault settingCustomized setting
Mechanical key linked
operationOffOn——O
Wireless remote control
linked operationOffOn (open only)——O
Wireless remote control
linked operation signal
(buzzer)
OnOff——O
FunctionDefault settingCustomized setting
Light sensor sensitivityStandard-2 to 2O—O
Time elapsed before
headlights automatically
turn off after doors are
closed
30 seconds
Off
O—O60 seconds
90 seconds
Windshield wiper linked
headlight illuminationOnOff——O
FunctionDefault settingCustomized setting
Daytime running light
systemOnOffO—O
FunctionDefault settingCustomized setting

5429-2. Customization
COROLLA H/B_U
■Vehicle customization
●When the smart key system is off,
Smart door unlocking cannot be
customized.
●When the doors remain closed
after unlocking the doors and the
automatic door lock function is
activated, the signals will be gen-
erated in accordance with the
operation signal (buzzer) and the
operation signal (emergency
flashers) settings.
■In the following situations, cus-
tomize mode in which the set-
tings can be changed through
the multi-information display
will automatically be turned off
●A warning message appears after
the customize mode screen is dis-
played
●The engine switch is turned off.
●The vehicle begins to move while
the customize mode screen is dis-
played.
Operation when the
doors are unlockedOnOff——O
Operation when you
approach the vehicle
with the electronic key
on your person
OnOff——O
FunctionDefault settingCustomized setting

556What to do if... (Troubleshooting)
COROLLA H/B_U
1-1.What to do if... (Troubleshooting)What to do if... (Troubleshooting)
 If you lose your mechanical
keys, new genuine mechani-
cal keys can be made by your
Toyota dealer. ( P.504)
 If you lose your electronic
keys, the risk of vehicle theft
increases significantly. Con-
tact your Toyota dealer imme-
diately. ( P.504)
 Is the electronic key battery
weak or depleted? ( P.456)
 Is the engine switch in ON?
When locking the doors, turn the
engine switch off. ( P.143)
 Is the electronic key left inside
the vehicle?
When locking the doors, make sure
that you have the electronic key on
your person.
The function may not operate properly due to the condition
of the radio wave. (
P.109)
 Is the child-protector lock set?
The rear door cannot be opened
from inside the vehicle when the
lock is set. Open the rear door from
outside and then unlock the
child-protector lock. ( P.104)
 Vehicles with a continuously
variable transmiss ion: Did you
press the engine switch while
firmly depressing the brake
pedal? ( P.142)
 Vehicles with a manual trans-
mission: Did you press the
engine switch while firmly
depressing the clutch pedal?
( P.142)
 Vehicles with a continuously
variable transmission: Is the
shift lever in P? ( P.142)
 Is the electronic key any-
where detectable inside the
vehicle? ( P.108)
 Is the steering wheel
unlocked? ( P.142)
If you have a problem,
check the following before
contacting your Toyota
dealer.
The doors cannot be
locked, unlocked, opened
or closed
You lose your keys
The doors cannot be
locked or unlocked
The rear door cannot be
opened
If you think something is
wrong
The engine does not start