key battery TOYOTA COROLLA HYBRID 2021 Owners Manual (in English)

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COROLLA HV_U
Pictorial indexSearch by illustration
For safety
and securityMake sure to read through them
(Main topics: Child seat, theft deterrent system)
Vehicle status
information and
indicatorsReading driving-related information
(Main topics: Meters, multi-information display)
Before driving
Opening and closing the doors and windows,
adjustment before driving
(Main topics: Keys, doors, seats)
Driving
Operations and advice which are necessary for
driving
(Main topics: Starting hybrid system, refueling)
AudioOperating the Audio
(Main topics: Audio/visual, phone)
Interior featuresUsage of the interior features
(Main topics: Air conditioner, storage features)
Maintenance
and careCaring for your vehicle and maintenance
procedures
(Main topics: Interior and exterior, light bulbs)
When trouble
arisesWhat to do in case of malfunction and emergency
(Main topics: 12-volt battery discharge, flat tire)
Vehicle
specificationsVehicle specifications, customizable features
(Main topics: Fuel, oil, tire inflation pressure)
For ownersReporting safety defects for U.S. owners, and seat
belt and SRS airbag instructions for Canadian
owners
IndexSearch by symptom
Search alphabetically

5TABLE OF CONTENTS
COROLLA HV_U
1
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7
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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

1163-1. Key information
COROLLA HV_U
3-1.Key information
The following keys are provided
with the vehicle.Electronic keys
• Operating the smart key system ( P.125)
• Operating the wireless remote control function ( P. 1 1 7 )
Mechanical keys
Key number plate
■When riding in an aircraft
When bringing an electronic key
onto an aircraft, make sure you do
not press any buttons on the elec-
tronic key while inside the aircraft
cabin. If you are carrying an elec-
tronic key in your bag, etc., ensure
that the buttons are not likely to be
pressed accidentally. Pressing a
button may cause the electronic key
to emit radio waves that could inter-
fere with the oper ation of the air-
craft.
■Electronic key battery depletion
●The standard battery life is 1 to 2
years.
●If the battery becomes low, an
alarm will sound in the cabin and a
message will be s hown on the
multi-information display when the
hybrid system is stopped.
●To reduce key battery depletion
when the electronic key is to not
be used for long periods of time,
set the electronic key to the bat-
tery-saving mode. ( P.127)
●As the electronic key always
receives radio waves, the battery
will become depleted even if the
electronic key is not used. The fol-
lowing symptoms indicate that the
electronic key battery may be
depleted. Replace the battery
when necessary. ( P.459)
• The smart key system or the wire-
less remote contro l does not oper-
ate.
• The detection area becomes
smaller.
• The LED indicator on the key sur- face does not turn on.
●To avoid serious deterioration, do
not leave the electronic key within
3 ft. (1 m) of the following electri-
cal appliances that produce a
magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Recharging cellular phones or cordless phones
• Table lamps
• Induction cookers
●If the electronic key is near the
vehicle for longer than necessary,
even if the smart key system is not
operated, the key battery may
become depleted faster than nor-
mal.
■Replacing the battery
 P.459
■If “A New Key has been Regis-
tered Contact Your Dealer for
Details” is shown on the
multi-information display
This message will be displayed
each time the driver’s door is
opened when the doors are
unlocked from the outside for
approximately 10 days after a new
electronic key has been registered.
Keys
The keys

1183-1. Key information
COROLLA HV_U
■Panic mode
When is pressed for longer
than about one second, an alarm
will sound intermittently and the
vehicle lights will f lash to deter any
person from trying to break into or
damage your vehicle.
To stop the alarm, press any button
on the electronic key.
To take out the mechanical key,
slide the release button and take
the key out.
The mechanical key can only be
inserted in one direction, as the
key only has grooves on one
side. If the key cannot be
inserted in a lock cylinder, turn it
over and re-attempt to insert it.
After using the mechanical key,
store it in the electronic key.
Carry the mechanical key
together with the electronic key.
If the electronic key battery is
depleted or the entry function
does not operate properly, you
will need the mechanical key.
( P. 5 1 1 )
■If you lose your mechanical
keys
 P.510
■If a wrong key is used
The key cylinder rotates freely, iso-
lated from the internal mechanism.
Using the mechanical key

1203-2. Opening, closing and locking the doors
COROLLA HV_UTo prevent unintended triggering of
the alarm, unlock
the doors using
the wireless remote control and
open and close a door once after
the settings have been changed. (If
a door is not opened within 60 sec-
onds after is pressed, 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. 9 1 )
■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 wireles
s remote control,
the security featur e 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 se nsor 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 b uzzer will sound
continuously for 5 seconds. Fully
close the door to stop the buzzer,
and lock the doors again.
■Alarm
Locking the doors will set the alarm
system. ( P. 9 0 )
■Conditions affecting the opera-
tion of the smart key system or
wireless remote control
 P.127
■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.511)
Replace the key battery with a new
one if it is depleted. ( P.459)
■If the 12-volt b attery is dis-
charged
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.

1253-2. Opening, closing and locking the doors
COROLLA HV_U
3
Before driving
with you when leaving the vehicle.
●If the electronic key is put in the
trunk with all the doors locked, the
key may not be detected depend-
ing on the location of the key and
the surrounding radio wave condi-
tions. In this case, the key con-
finement prevention function
cannot be activate d, causing the
doors to lock when the trunk is
closed. Make sure to check where
the key is before closing the trunk.
●The key confinement prevention
function cannot be activated if any
one of the doors is unlocked. In
this case, open the trunk using the
trunk opener.
■Internal trunk release lever
The trunk lid can be opened by pull-
ing up the glow-in -the-dark lever
located on the inside of the trunk lid.
The lever will conti nue to glow for
some time after the trunk lid is
closed.
■If the smart key system or the
wireless remote control does
not operate properly
Replace the key battery with a new
one if it is depleted. ( P.459)
■Open door warning buzzer
 P. 1 2 2
■Customization
Some functions can be customized.
(  P.544)
■Antenna location
Antennas outside the cabin
Antennas inside the cabin
Antenna inside the trunk
Antenna outside the trunk
Smart key system
The following operations
can be performed simply by
carrying the electronic key
on your person, for example
in your pocket. The driver
should always carry the
electronic key.
 Locks and unlocks the
doors ( P.119)
 Opens the trunk ( P.124)
 Starts the hybrid system
( P.157)

1263-2. Opening, closing and locking the doors
COROLLA HV_U
■Effective range (areas within
which the electronic key is
detected)When locking or unlocking the
doors
The system can be operated when
the electronic key is within about 2.3
ft. (0.7 m) of eithe r of the front out-
side door handles. (Only the doors
detecting the key c an be operated.)
When starting the hybrid system
or changing power switch
modes
The system can be operated when
the electronic key is inside the vehi-
cle.
When opening the trunk
The system can be operated when
the electronic key is within about 2.3
ft. (0.7 m) of the trunk release but-
ton.
■Alarms and warning messages
A combination of e xterior and inte-
rior buzzers as well as warning mes-
sages shown on the
multi-information display are used to
prevent theft of the vehicle and acci-
dents resulting from erroneous
operation. Take appropriate mea-
sures based on the displayed mes-
sage. ( P.487)
When only an ala rm sounds, cir-
cumstances and c orrection proce-
dures are as follows.
●Exterior buzzer sounds once for 5
seconds
●Interior buzzer sounds continu-
ously
■Battery-saving function
The battery-saving function will be
activated in ord er to prevent the
electronic key battery and the
12-volt battery from being dis-
charged while the vehicle is not
operated for a long time.
●In the following situations, the
smart key system may take some
time to unlock the doors.
• The electronic key has been left within approximatel y 11 ft. (3.5 m)
of the outside of the vehicle for 2
minutes or longer.
• The smart key system has not
SituationCorrection
procedure
An attempt was
made to lock the
vehicle while a door
was open.Close all of
the doors
and lock the
doors again.
The trunk was closed
while the electronic
key was still inside
the trunk and all the
doors were locked.Retrieve the
electronic
key from the
trunk and
close the
trunk lid.
SituationCorrection procedure
The power switch
was turned to ACC
while the driver’s
door was open (or
the driver’s door was
opened while the
power switch was in
ACC).
Turn the
power
switch off
and close
the driver’s
door.
The power switch
was turned to off
while the driver’s
door was open.
Close the
driver’s door

1273-2. Opening, closing and locking the doors
COROLLA HV_U
3
Before driving
been used for 5 days or longer.
●If the smart key system has not
been used for 14 days or longer,
the doors cann ot be unlocked
from any door except the driver’s
door. In this case, hold the driver’s
door handle, or use the wireless
remote control or mechanical key
to unlock the doors.
■Electronic key battery-saving
function
When battery-savi ng mode is set,
battery depletion is minimized by
stopping the electronic key from
receiving radio waves.
Press twice while pressing and
holding . Confirm that the elec-
tronic key indicator flashes 4 times.
While the battery-saving mode is
set, the smart key system cannot be
used. To cancel the function, press
any of the electronic key buttons.
■Conditions affecting operation
The smart key system uses weak
radio waves. In the following situa-
tions, the communication between
the electronic key and the vehicle
may be affected, preventing the
smart key system, wireless remote
control and immobilizer system from
operating properly.
●When the electronic key battery is
depleted
●Near a TV tower, electric power
plant, gas station , radio station,
large display, airpo rt or other facil-
ity that generates strong radio
waves or electrical noise
●When carrying a portable radio,
cellular phone, cordless phone or other wireless communication
device
●When the electronic key is in con-
tact with, or is c
overed by the fol-
lowing metallic objects
• Cards to which aluminum foil is
attached
• 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 wirel ess 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 wit h 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. 5 1 1 )
If the hybrid system cannot be
started using the smart key system,

1293-2. Opening, closing and locking the doors
COROLLA HV_U
3
Before driving
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.544)
●Setting the electronic key to bat-
tery-saving mode helps to reduce
key battery depletion. ( P.127)
■To operate the system properly
●Make sure to carry the electronic
key when operati ng the system.
Do not get the electronic key too
close to the vehicle when operat-
ing the system from the outside of
the vehicle.
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 may not operate.)
●Do not leave the electronic key
inside the trunk.
The key confinement prevention
function may not operate, depend-
ing on the location of the key (the
inside edge of the trunk), condi- tions (inside a metal bag, close to
metallic objects)
and the radio
waves in the surrounding area.
(  P.124)
■If the smart key system does
not operate properly
●Locking and unlocking the doors:
 P. 5 1 1
●Starting the hybrid system:
P. 5 1 2
■Customization
Some functions can be customized.
(  P.544)
■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. 11 9 , 5 11 )
●Starting the hybr id system and
changing power switch modes:
 P. 5 1 2
●Stopping the hybrid system:
P. 1 5 9

1574-2. Driving procedures
COROLLA HV_U
4
Driving
4-2.Driving procedures
1 Check that the parking brake
is set. ( P.167)
2 Check that the shift lever is in
P.
3 Firmly depress the brake
pedal.
and a message will be dis-
played on the multi-information dis-
play. If it is not displayed, the hybrid
system cannot be started.
4 Press the power switch
shortly and firmly.
When operating the power switch,
one short, firm press is enough. It is
not necessary to press and hold the
switch.
If the “READY” indicator turns on,
the hybrid system will operate nor-
mally.
Continue depressing the brake
pedal until the “READY” indicator is
illuminated.
The hybrid system can be started from any power switch mode.
5
Check that the “READY” indi-
cator is illuminated.
The vehicle cannot be driven if the
“READY” indicator is off.
■If the hybrid system does not
start
●The immobilizer system may not
have been deactivated. ( P. 8 8 )
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.
■When the ambient temperature
is low, such as during winter
driving conditions
When starting the hybrid system,
the flashing time of the “READY”
indicator may be long. Leave the
vehicle as it is until the “READY”
indicator is steady on, as steady
means the vehicle is able to move.
■Sounds and vibrations specific
to a hybrid vehicle
 P. 8 2
■If the 12-volt b attery is dis-
charged
The hybrid system cannot be started
using the smart key system. Refer
to P.513 to restar t the hybrid sys-
tem.
■Electronic key battery depletion
 P. 1 1 6
Power (ignition)
switch
Performing the following
operations when carrying
the electronic key on your
person starts the hybrid
system or changes power
switch modes.
Starting the hybrid sys-
tem