battery TOYOTA YARIS HATCHBACK 2021 User Guide

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3-1. Key information
Before driving
not used. The following symptoms
indicate that the electronic key battery may be depleted. Replace the battery when necessary. ( →P.345)
• The smart entry & start system or the wireless remote control does not oper-ate.
• The detection area becomes smaller. • The LED indicator on the key surface does not turn on.
●To avoid serious deterioration, do not leave the electronic key within 1 m (3
ft.) of the following electrical appli- ances that produce a magnetic field:•TVs
• Personal computers • Cellular phones, cordless phones and battery chargers
• Recharging cellular phones or cord- less phones• Table lamps
• Induction cookers
●If the electronic key is near the vehicle
for longer than necessary, even if the smart entry & start system is not oper-ated, the key battery may become
depleted faster than normal.
■Replacing the battery
→ P. 3 4 5
■If “A New Key has been Registered Contact Your Dealer for Details” is
shown on the multi-information display (vehicles with a smart entry & start system)
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.If this message is displayed but you
have not had a new electronic key regis- tered, ask any authorized Toyota retailer or Toyota authorized repairer, or any reli-
able repairer to check if an unknown electronic key (other than those in your possession) has been registered.
■If a wrong key is used
The key cylinder rotates freely, isolated from the internal mechanism.
NOTICE
■To prevent key damage
●Do not drop the keys, subject them
to strong shocks or bend them.
●Do not expose the keys to high
temperatures for long periods of time.
●Do not get the keys wet or wash them in an ultrasonic washer etc.
●Vehicles with a smart entry & start system: Do not attach metallic or magnetic materials to the keys or
place the keys close to such materi- als.
●Do not disassemble the keys.
●Do not attach a sticker or anything
else to the surface of the key.
●Vehicles with a smart entry & start
system: Do not place the keys near objects that produce magnetic fields, such as TVs, audio systems
and induction cookers, or medical electrical equipment, such as low-frequency therapy equipment.
■Carrying the electronic key on your person (vehicles with a
smart entry & start system)
Carry the electronic key 10 cm (3.9 in.) or more away from electric appli-
ances that are turned on. Radio waves emitted from electric appli-ances within 10 cm (3.9 in.) of the
electronic key may interfere with the key, causing the key to not function properly.
■In case of a smart entry & start system malfunction or other key-
related problems (vehicles with a smart entry & start system)
→ P. 3 9 9

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3-1. Key information
The keys are equipped with the fol-
lowing wireless remote control:
Vehicles without a smart entry &
start system
Locks the doors ( →P. 1 1 6 )
Closes the windows* ( →P. 1 1 6 )
Unlocks the doors ( →P. 1 1 6 )
Opens the windows* ( →P. 1 1 6 )
Vehicles with a smart entry &
start system
Locks the doors ( →P. 1 1 6 )
Closes the windows* ( →P. 1 1 6 )
Unlocks the doors ( →P. 1 1 6 )
Opens the windows* ( →P. 1 1 6 )
*: This setting must be customized at
any authorized Toyota retailer or
Toyota authorized repairer, or any
reliable repairer.
■Conditions affecting the operation
of the wireless remote control (vehicles without a smart entry & start system)
The wireless remote control function may not operate normally in the follow-ing situations:
●When the wireless key battery is depleted
●Near a TV tower, electric power plant, gas station, radio station, large dis-
play, airport or other facility that gen- erates strong radio waves or electrical noise
●When carrying a portable radio, cellu-lar phone or other wireless communi-
cation devices
●When the wireless key is in contact
with, or is covered by a metallic object
●When another wireless key (that emits
radio waves) is being used nearby
●If window tint with a metallic content or
metallic objects are attached to the rear window
■Conditions affecting the operation of the smart entry & start system or
wireless remote control (vehicles with a smart entry & start system)
→ P. 1 2 4
NOTICE
■When an electronic key is lost (vehicles with a smart entry &
start system)
→ P. 3 9 9
Wireless remote control

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3-1. Key information
Before driving
1Releasing
To release the key, press the button
2Folding
To stow the key, press the button then
fold the key.
To take out the mechanical key,
slide the release lever 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 cyl-
inder, 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.399)
■If you lose your mechanical keys
→ P. 3 9 9
■Certification for the wireless remote control
→ P. 4 4 4
Using the key (vehicles with-
out a smart entry & start
system)
Using the mechanical key
(vehicles with a smart entry
& start system)

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3-2. Opening, closing and locking the doors
buzzer, and lock the doors again.
■Alarm (if equipped)
Locking the doors will set the alarm sys- tem. ( →P.78)
■Conditions affecting the operation of the smart entry & start system or
wireless remote control
Vehicles without a smart entry & start system
→ P. 1 1 4
Vehicles with a smart entry & start system
→ P. 1 2 4
■If the smart entry & start system or the wireless remote control does not operate properly
Vehicles without a smart entry & start system
Replace the key battery with a new one
if it is depleted. ( →P.345)
Vehicles with a smart entry & start
system
Use the mechanical key to lock and
unlock the doors. ( →P.400)
Replace the key battery with a new one
if it is depleted. ( →P.345)
■If the battery is discharged (vehi- cles with a smart entry & start sys-tem)
The doors cannot be locked and unlocked using the entry function or wireless remote control. Lock or unlock
the doors using the mechanical key. ( →P.400)
■Customization
Some functions can be customized.
( →P.422)
WARNING
■To prevent an accident
Observe the following precautions
while driving the vehicle. Failure to do so may result in a door opening and an occupant being
thrown out of the vehicle, resulting in death or serious injury.
●Ensure that all doors are properly closed and locked.
●Do not pull the inside door handle while driving.Be especially careful of the front
doors, as the doors may be opened even if the inside lock buttons are in the locked position.
●Set the rear door child-protector locks when children are seated in
the rear seats.
■When opening or closing a door
Check the surroundings of the vehicle such as whether the vehicle is on an incline, whether there is enough
space for a door to open and whether a strong wind is blowing. When open-ing or closing the door, hold the door
handle tightly to prepare for any unpredictable movement.
■When using the wireless remote control or the key and operating the power windows
Operate the power windows after checking to make sure that there is no possibility of any passenger having
any of their body parts caught in the windows. Also, do not allow children to operate the wireless remote control
or the key. It is possible for children and other passengers to get caught in the power windows.

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3-2. Opening, closing and locking the doors
●Interior buzzer sounds continuously
■Battery-saving function
The battery-saving function will be acti-
vated in order to prevent the electronic
key battery and the vehicle battery from
being discharged while the vehicle is not
operated for a long time.
●In the following situations, the smart
entry & start system may take some
time to unlock the doors.
• The electronic key has been left within
approximately 3.5 m (11 ft.) of the out-
side of the vehicle for 2 minutes or
longer.
• The smart entry & start system has
not been used for 5 days or longer.
●If the smart entry & start system has
not been used for 14 days or longer,
the doors cannot be unlocked from
any door except the driver’s door. In
this case, hold the driver’s door han-
dle, or use the wireless remote control
or mechanical key to unlock the
doors.
■Electronic key battery-saving func-
tion
●When battery-saving mode is set, bat-
tery depletion is minimized by stop-
ping the electronic key from receiving
radio waves.
Press twice while pressing and holding . Confirm that the electronic
key indicator flashes 4 times.
While the battery-saving mode is set,
the smart entry & start system cannot be
used. To cancel the function, press any
of the electronic key buttons.
●Electronic keys that will not be used
for long periods of time can be set to
the battery-saving mode in advance.
■Conditions affecting operation
The smart entry & start 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 entry &
start system, wireless remote control
and engine immobilizer system from
operating properly. (Ways of coping:
→P.399)
●When the electronic key battery is
depleted
●Near a TV tower, electric power plant,
gas station, radio station, large dis-
play, airport or other facility that gen-
erates strong radio waves or electrical
noise
●When carrying a portable radio, cellu-
lar phone, cordless phone or other
wireless communication device
●When the electronic key is in contact
with, or is covered by the following
metallic objects
• Cards to which aluminum foil is
attached
• Cigarette boxes that have aluminum
foil inside
• Metallic wallets or bags
•Coins
SituationCorrection
procedure
The engine switch was
turned to ACC while the
driver’s door was open
(or the driver’s door
was opened while the
engine switch was in
ACC).
Turn the
engine switch
off and close
the driver’s
door.
The engine switch was
turned to off while the
driver’s door was open.Close the
driver ’s door.

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3-2. Opening, closing and locking the doors
Before driving
• 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 digi-
tal assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint with a metallic content or
metallic objects are attached to the
rear window
●When the electronic key is placed
near a battery charger or electronic
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 entry & start system,
lock/unlock the doors by performing any
of the following:
●Bring the electronic key close to either
front door handle and operate the
entry function.
●Operate the wireless remote control.
If the doors cannot be locked/unlocked
using the above methods, use the
mechanical key. (→P.400)
If the engine cannot be started using the
smart entry & start system refer to
P.400.
■Note for the entry function
●Even when the electronic key is within
the effective range (detection areas),
the system may not operate properly
in the following cases:
• The electronic key is too close to the
window or outside door handle, 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 recep-
tion conditions, it may be detected by
the antenna outside the cabin and the
door will become lockable from the
outside, possibly trapping the elec-
tronic key inside the vehicle.
●As long as the electronic key is within
the effective range, the doors may be
locked or unlocked by anyone. How-
ever, 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 possible to start
the engine if the electronic 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 effective range. (The doors
will automatically be locked after
approximately 30 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 pos-
sibility 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 sen-
sor while wearing gloves may prevent
lock or unlock operation.
●When the lock operation is performed
using the lock sensor, recognition sig-
nals will be shown up to two consecu-
tive times. After this, no recognition
signals will be given.
●If the door handle becomes wet while
the electronic key is within the effec-
tive range, the door may lock and
unlock repeatedly. In that case, follow
the following correction procedures to

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3-2. Opening, closing and locking the doors
wash the vehicle:
• Place the electronic key in a location 2
m (6 ft.) or more away from the vehi-
cle. (Take care to ensure that the key
is not stolen.)
• Set the electronic key to battery-sav-
ing mode to disable the smart entry &
start system. (→P.124)
●If the electronic key is inside the vehi-
cle and a door handle becomes wet
during a car wash, a message may be
shown on the multi-information dis-
play and a buzzer will sound outside
the vehicle. To turn off the alarm, lock
all the doors.
●The lock sensor may not work prop-
erly if it comes into contact with ice,
snow, mud, etc. Clean the lock sensor
and attempt to operate it again.
●A sudden handle operation or a han-
dle operation immediately after enter-
ing the effective range may prevent
the doors from being unlocked. Touch
the door unlock sensor and check that
the doors are unlocked before pulling
the door handle again.
●If there is another electronic key in the
detection area, it may take slightly lon-
ger 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 2 m (6
ft.) of the vehicle.
●The smart entry & start system can be
deactivated in advance. (→P.422)
●Setting the electronic key to battery-
saving mode helps to reduce key bat-
tery depletion. (→P.124)
■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 vehi-
cle when operating the system from the
outside of the vehicle.
Depending on the position and holding
condition of the electronic key, the key
may not be detected correctly and the system may not operate properly. (The
alarm may go off accidentally, or the
door lock prevention function may not
operate.)
■If the smart entry & start system
does not operate properly
●Locking and unlocking the doors:
→P. 4 0 0
●Starting the engine: →P. 4 0 0
■Customization
Some functions can be customized.
(→P.422)
■If the smart entry & start system
has been deactivated in a custom-
ized setting
●Locking and unlocking the doors: Use
the wireless remote control or
mechanical key. (→P.116, 400)
●Starting the engine and changing
engine switch modes: →P. 4 0 0
●Stopping the engine: →P. 1 6 1
■Certification for the smart entry &
start system
→P. 4 7 7

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3-5. Opening and closing the windows
Before driving
This function can be used to pre-
vent children from accidentally
opening or closing a passenger
window.
Press the switch.
The indicator will come on and the
passenger windows will be locked.
The passenger windows can still be
opened and closed using the driver’s
switch even if the lock switch is on.
■The window lock switch can be operated when
The engine switch is in ON.
■When the battery is disconnected
The window lock switch is disabled. If necessary, press the window lock switch
after reconnecting the battery.
WARNING
■Jam protection function
●Never use any part of your body to
intentionally activate the jam pro- tection function.
●The jam protection function may not work if something gets jammed just before the window is fully closed.
Be careful not to get any part of your body jammed in the window.
■Catch protection function
●Never use any part of your body or clothing to intentionally activate the
catch protection function.
●The catch protection function may
not work if something gets caught just before the window is fully opened. Be careful not to get any
part of your body or clothing caught in the window.
Preventing accidental opera-
tion (window lock switch)

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4-2. Driving procedures
Driving
Some electrical components such as
the audio system can be used.
3 ON (“ON” position)
All electrical components can be used.
4START (“START” position)
For starting the engine.
■Turning the key from ACC to OFF
1 Shift the shift lever to P (Multidrive)
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 remind you to remove
the key.
1 Press the parking brake switch
to check that the parking brake
is set.
2 Check that the shift lever is in P
(Multidrive) or N (manual trans-
mission).
3 Firmly depress the brake pedal
(Multidrive) or clutch pedal
(manual transmission).
and a message will be displayed
on the multi-information display. 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 (Multidrive) or clutch pedal (manual
transmission) until the engine is com- pletely started.
The engine can be started from any
WARNING
■Caution when driving
Do not turn the engine switch to OFF while driving. If, in an emergency, you must turn the engine off while the
vehicle is moving, turn the engine switch only to ACC to stop the engine. An accident may result if the engine is
stopped while driving. ( →P.360)
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 smart
entry & start system)
Performing the following oper-
ations when carrying the elec-
tronic key on your person
starts the engine or changes
engine switch modes.
Starting the engine

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4-2. Driving procedures
engine switch mode.
■Engine switch illumination
In the following situations, the engine
switch is illuminated.
●When the driver’s or passenger’s door
is opened.
●When the engine switch is in ACC or
ON.
●When the engine switch mode is
changed from ACC or ON to off.
Also, in the following situation, the
engine switch flashes.
●When depressing the brake pedal
while carrying the electronic key.
■If the engine does not start
●The engine immobilizer system may
not have been deactivated. (→P.76)
Contact any authorized Toyota retailer
or Toyota authorized repairer, or any
reliable repairer.
●If a message related to start-up is
shown on the multi-information dis-
play, read the message and follow the
instructions.
■If the battery is discharged
The engine cannot be started using the
smart entry & start system. Refer to
P.401 to restart the engine.
■Electronic key battery depletion
→P. 1 1 2
■Conditions affecting operation
→P. 1 2 4
■Notes for the entry function
→P. 1 2 5
■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
cancels 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 steering 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 repeatedly 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 func-
tioning.
■Electronic key battery
→P. 3 4 5
■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 turning the engine
switch off, please wait a few seconds
before restarting the engine.