change key battery TOYOTA COROLLA HATCHBACK 2021 Owners Manual (in English)

1023-2. Opening, closing and locking the doors
COROLLA H/B_UFor vehicles with an alarm: To pre-
vent unintended triggering of the
alarm, unlock the doors using the
wireless remote control and open
and close a door once after the set-
tings have been changed. (If a door
is not opened within 60 seconds
after is press
ed, the doors will
be locked again and the alarm will
automatically be set.)
In case that the alarm is triggered,
immediately stop the alarm. ( P. 6 6 )
■Operation signals
A buzzer sounds and the emer-
gency flashers flash to indicate that
the doors have been
locked/unlocked using the entry
function or wireless remote control.
(Locked: Once; Unlocked: Twice)
A buzzer sounds to indicate that the
windows are operating.
■Security feature
If a door is not opened within
approximately 60 seconds after the vehicle is unlocked using the entry
function or wireless remote control,
the security feature automatically
locks the vehicle again.
■When the door cannot be
locked by the lock sensor on
the surface of the front door
handle
If the doors cannot be locked by
touching the lock sensor with a fin-
ger, touch the lock sensor with the
palm of your hand.
If you are wearing gloves, remove
them.
■Door lock buzzer
If an attempt to lock the doors using
the entry function or wireless remote
control is made when a door is not
fully closed, a buzzer will sound
continuously for 5 seconds. Fully
close the door to stop the buzzer,
and lock the doors again.
■Alarm (if equipped)
Locking the doors will set the alarm
system. ( P. 6 6 )
■Conditions affecting the opera-
tion of the smart key system or
wireless remote control
 P.109
■If the smart key system or the
wireless remote control does
not operate properly
Use the mechanical key to lock and
unlock the doors. ( P.504)
Replace the key battery with a new
one if it is depleted. ( P.456)
■If the battery is discharged
The doors cannot be locked and
unlocked using the smart key sys-
Multi-informa-
tion display/BeepUnlocking func- tion
Exterior: Beeps 3 times
Interior: Pings once
Holding the
driver’s door
handle unlocks
only the driver’s
door.
Holding the front
passenger’s
door handle
unlocks all the
doors.
Exterior: Beeps twice
Interior: Pings once
Holding either
front door handle
unlocks all the
doors.

1103-2. Opening, closing and locking the doors
COROLLA H/B_U• Cigarette boxes that have alumi-
num foil inside
• Metallic wallets or bags
• Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
●When other wireless keys (that
emit radio waves) are being used
nearby
●When carrying the electronic key
together with the following devices
that emit radio waves
• Another vehicle’s electronic key or
a wireless key that emits radio
waves
• Personal computers or personal
digital assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint with a metallic con-
tent or metallic objects are
attached to the rear window
●When the electronic key is placed
near a battery charger or elec-
tronic devices
●When the vehicle is parked in a
pay parking spot where radio
waves are emitted
If the doors cannot be
locked/unlocked using the smart key
system, lock/unlock the doors by
performing any of the following:
●Bring the electronic key close to
either front door handle and oper-
ate the entry function.
●Operate the wireless remote con-
trol.
If the doors cannot be
locked/unlocked using the above
methods, use the mechanical key.
(  P.504)
If the engine cannot be started using
the smart key system, refer to
P.505.
■Note for the entry function
●Even when the electronic key is
within the effective range (detec-
tion areas), the system may not
operate properly in the following cases:
• The electronic key is too close to the window or outside door han-
dle, near the ground, or in a high
place when the doors are locked
or unlocked.
• The electronic key is on the instru- ment panel, luggage cover or
floor, or in the door pockets or
glove box when the engine is
started or engine switch modes
are changed.
●Do not leave the electronic key on
top of the instrument panel or near
the door pockets when exiting the
vehicle. Depending on the radio
wave reception conditions, it may
be detected by the antenna out-
side the cabin and the door will
become lockable from the outside,
possibly trapping the electronic
key inside the vehicle.
●As long as the electronic key is
within the effective range, the
doors may be locked or unlocked
by anyone. However, only the
doors detecting the electronic key
can be used to unlock the vehicle.
●Even if the electronic key is not
inside the vehicle, it may be possi-
ble to start the engine if the elec-
tronic key is near the window.
●The doors may unlock or lock if a
large amount of water splashes on
the door handle, such as in the
rain or in a car wash when the
electronic key is within the effec-
tive range. (The doors will auto-
matically be locked after
approximately 60 seconds if the
doors are not opened and closed.)
●If the wireless remote control is
used to lock the doors when the
electronic key is near the vehicle,
there is a possibilit y that the door
may not be unlocked by the entry
function. (Use the wireless remote
control to unlock the doors.)
●Touching the door lock or unlock
sensor while wearing gloves may
prevent lock or unlock operation.

1424-2. Driving procedures
COROLLA H/B_U
4-2.Driving procedures
1Pull the parking brake switch
to check that the parking
brake is set. ( P.154)
The parking brake indicator will
come on.
2 Check that the shift lever is
set in P (continuously vari-
able 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 se conds, whichever
is less.
Continue depressing the brake
pedal (continuously variable trans- mission) or clutch pedal (manual
transmission) until the engine is
completely started.
The 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. 6 4 )
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.506to restart the engine.
■Electronic key battery depletion
 P. 9 8
■Conditions affecting operation
 P.109
■Notes for the entry function
 P. 1 1 0
■Steering lock function
●After turning the engine switch off
and opening and closing the
doors, the steering 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
Engine (ignition)
switch
Performing the following
operations when carrying
the electronic key on your
person starts the engine or
changes engine switch
modes.
Starting the engine

1434-2. Driving procedures
COROLLA H/B_U
4
Driving
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. 4 5 6
■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 restart 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.504.
Continuously variable trans-
mission
1 Stop the vehicle completely.
WARNING
■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.
■Caution while driving
If engine failure occurs 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 somewhat differently
than usual, such as the switch
sticking slightly, there may be a
malfunction. Contact your Toyota
dealer immediately.
Stopping 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.

561Alphabetical Index
COROLLA H/B_U
Child safety Airbag precautions ................. 34
Battery precautions ...... 440, 509
Child restraint system............. 47
Heated steering wheel and seat heater precautions ............. 399
How your child should wear the seat belt................................ 26
Power window lock switch.... 127
Power window precautions .. 126
Rear door child-protectors.... 104
Removed electronic key battery precautions......................... 457
Seat belt extender precautions ............................................. 26
Seat belt precautions ............. 44
Child-protectors ..................... 104
Cleaning Exterior ................................. 420
Interior .................................. 422
Radar sensor........................ 173
Seat belts ............................. 422
Wheels and wheel ornaments........................................... 420
Clock ............... 74, 76, 78, 81, 297
Coat hooks .............................. 417
Command list ......................... 342
Condenser .............................. 438
Console box ............................ 405
Consumption screen................ 93
Continuously variable transmis- sion ........................................ 147If the shift lever cannot be shifted from P................................. 148
M mode ................................ 150
Paddle shift switches.... 149, 150
Cooling system ...................... 437 Engine overheating ............. 510
Cruise control Dynamic radar cruise control 215
Dynamic radar cruise control with full-speed range .......... 204 Cup holders.............................404
Current fuel consumption........84
Curtain shield airbags ..............29
Customizable features ...........535
D
Daytime running light system160
DCM .........................382, 383, 384
Defogger
Outside rear view mirrors .....395
Rear window.........................395
Windshield ............................394
Dimensions .............................514
Dinghy towing .........................141
Display Dynamic radar cruise control 215
Dynamic radar cruise control with full-speed range ..........204
Head-up display .....................89
LDA (Lane Departure Alert with steering control)..................201
LTA (Lane-Tracing Assist) .....192
Multi-information display.........82
RCTA ....................................233
Warning message.................482
Display change button .......75, 80
Distance until next engine oil change .....................................80
Do-it-yourself maintenance ...426
Door lock Back door .............................105
Side doors ............................101
Smart key system .................108
Wireless remote control..........99
Doors Automatic door locking and unlocking system ................104
Back door .............................105
Door glasses ........................125
Door lock ......................101, 105
Open door warning buzzer .102, 104