tire pressure TOYOTA GR YARIS 2021 Owner's Manual

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Maintenance and care
erates strong radio waves or electrical
noise. • When carrying a portable radio, cellu-lar phone, cordless phone or other
wireless communication device.
●When the vehicle is parked, the time
taken for the warning to start or go off could be extended.
●When tire inflation pressure declines rapidly for example when a tire has burst, the not to able detect.
■Warning performance of the tire
pressure warning system
The warning of the tire pressure warning system will change in accordance with
driving conditions. For this reason, the system may give a warning even if the tire pressure does not reach a low
enough level, or if the pressure is higher than the pressure that was adjusted to when the system was initialized.
When replacing tires or wheels, tire
pressure warning valves and trans-
mitters must also be installed.
When new tire pressure warning
valves and transmitters are
installed, new ID codes must be
registered in the tire pressure warn-
ing computer and the tire pressure
warning system must be initialized.
Have tire pressure warning valves
and transmitter ID codes regis-
tered any authorized Toyota retailer
or Toyota authorized repairer, or
any reliable repairer. ( →P.283)
■Replacing tires and wheels
If the ID code of the tire pressure warn- ing valve and transmitter is not regis-
tered, the tire pressure warning system
will not work properly. After driving for
about 10 minutes, the tire pressure warning light blinks for 1 minute and stays on to indicate a system malfunc-
tion.
Installing tire pressure warn-
ing valves and transmitters
NOTICE
■Repairing or replacing tires, wheels, tire pressure warning
valves, transmitters and tire valve caps
●When removing or fitting the
wheels, tires or the tire pressure warning valves and transmitters, contact any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer as the tire pressure warning valves
and transmitters may be damaged if not handled correctly.
●Make sure to install the tire valve caps. If the tire valve caps are not installed, water could enter the tire
pressure warning valves, corrode the valve, and cause sticking and air leaks.
●When replacing tire valve caps, do not use tire valve caps other than
those specified. The cap may become stuck.
■To avoid damage to the tire pres-sure warning valves and trans-mitters
When a tire is repaired with liquid sealants, the tire pressure warning valve and transmitter may not operate
properly. If a liquid sealant is used, contact any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer as soon as possible. Make sure to replace the tire pressure warning valve and transmitter when
replacing the tire. ( →P.281)

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■The tire pressure warning sys-
tem must be initialized in the
following circumstances:
zWhen rotating front and rear tires
which have different tire inflation
pressures.
zWhen changing the tire size.
zWhen the tire inflation pressure
is changed such as when chang-
ing traveling speed or load
weight.
zWhen changing between two
registered wheel sets.
When the tire pressure warning
system is initialized, the current tire
inflation pressure is set as the
benchmark pressure.
■How to initialize the tire pres-
sure warning system
1Park the vehicle in a safe place
and turn the engine switch off,
wait for approximately 15 min-
utes or more and perform the
procedure.
2Adjust the tire inflation pressure
to the specified cold tire inflation
pressure level. (→P.357)
Make sure to adjust the tire pressure to
the specified cold tire inflation pressure
level. The tire pressure warning system
will operate based on this pressure
level.
3Turn the engine switch to ON.
Initialization cannot be performed while
the vehicle is moving.
4Press / of the meter con-
trol switch to select .
5Press / to select “Vehicle
Settings” and then press and
hold .
6Press / to select “TPWS
setting” and then press .
7Press / to select “Setting
Pressure”. Then press and hold
until the tire pressure warn-
ing light blinks 3 times.
Then a message will be displayed on
the multi-information display. “--” will be
displayed on the multi-information dis-
play for the inflation pressure of each
tire while initialization is being per-
formed.
8Drive straight (with occasional
left and right turns) at approxi-
mately 40 km/h (25 mph) or
more for approximately 10 to 30
minutes.
Even if the vehicle is not driven at
approximately 40 km/h (25 mph) or
more, initialization can be completed by
driving for a long time. However, if ini-
Initializing the tire pressure
warning system

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Maintenance and care
tialization does not complete after driv-
ing for 1 hour or more, park the vehicle in a safe place for more than 15 min-utes and please drive a vehicle once
again with the engine switch ON. ( →P.285)
■Initialization procedure
●Make sure to carry out initialization
after adjusting the tire inflation pres- sure.Also, make sure the tires are cold
before carrying out initialization or tire inflation pressure adjustment.
●If you have accidentally turned the engine switch off during initialization, it is not necessary to press the reset
switch again as initialization will restart automatically when the engine switch is turned to ON the next time.
●If you accidentally press the reset switch when initialization is not neces-
sary, adjust the tire inflation pressure to the specified level when the tires are cold, and conduct initialization
again.
●While the position of each tire is being
determined and the inflation pres- sures are not being displayed on the multi-information display, if the infla-
tion pressure of a tire drops, the tire pressure warning light will come on.
■If the tire pressure warning system
is not initialized properly
●In the following situations, initialization
may take longer than usual to be com- pleted or may not be possible. (Usu-ally, the vehicle will need to be driven
for approximately 10 to 30 minutes to complete initialization.) If initialization is not complete after driving approxi-
mately 30 minutes, continue driving for a while.• If the vehicle is driven on an unpaved
road, it may take longer to complete initialization.• If the vehicle is backed up while per-
forming initialization, data collected during initialization will be cleared and it will take longer than normal to com-
plete.
• If the vehicle is driven in heavy traffic or another situation where other vehi-cles are driven close by, it may take
time for the system to recognize the tire pressure warning valve and trans-mitters of your vehicle over those of
other vehicles.
If initialization is not complete after driv-
ing for approximately 1 hour, park the
vehicle in a safe place for more than 15
minutes and then drive the vehicle
again.
●In the following situations, initialization
will not be started or was not com- pleted properly and the system will not operate properly. Perform the initial-
ization procedure again. • If, when attempting to start initializa-tion, the tire pressure warning light
does not blink 3 times. • If, when the vehicle has been driven for about 20 minutes after performing
initialization, the tire pressure warning light blinks for approximately 1 minute and then illuminates.
●If initialization cannot be completed after performing the above procedure,
contact any authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
The tire pressure warning valve
and transmitter is equipped with a
WARNING
■When initializing the tire pres- sure warning system
Do not initialize the tire pressure
warning system without first adjusting the tire inflation pressure to the speci-fied level. Otherwise, the tire pressure
warning light may not come on even if the tire inflation pressure is low, or it may come on when the tire inflation
pressure is actually normal.
Registering ID codes

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unique ID code. When replacing a
tire pressure warning valve and
transmitter, it is necessary to regis-
ter the ID code.
The ID codes can be registered on
of the multi-information display.
1Park the vehicle in a safe place
and turn the engine switch off,
wait for approximately 15 min-
utes or more and perform the
procedure.
2Turn the engine switch to ON.
Operate the registering ID codes func-
tion cannot be performed while the
vehicle is moving.
3Press / of the meter con-
trol switch to select .
4Press / to select “Vehicle
Settings” and then press and
hold .
5Press / to select “TPWS
setting” and then press .
6Press / to select “Identi-
fying Each Wheel & Position”.
Then press and hold until
the tire pressure warning light
blinks slowly 3 times.
Then a message will be displayed on
the multi-information display.
When registration is being performed,
the tire pressure warning light will blink
for approximately 1 minute then illumi-
nate and “--” will be displayed for the inflation pressure of each tire on the
multi-information display.
7Drive straight (with occasional
left and right turns) at approxi-
mately 40 km/h (25 mph) or
more for approximately 10 to 30
minutes.
Registration is complete when the tire
pressure warning light turns off and the
inflation pressure of each tire is dis-
played on the multi-information display.
Registration may take longer than
approximately 1 hour in certain situa-
tions, such as when the vehicle is
stopped for a long time at traffic lights,
etc. (→P.285)
8Initializing the tire pressure
warning system. (→P.282)
■When registering ID codes
●Before performing ID code registra-
tion, make sure that no wheels with
tire pressure warning valve and trans-
mitters installed are near the vehicle.
●Make sure to initialize the tire pres-
sure warning system after registering
the ID codes. If the system is initial-
ized before registering the ID codes,
the initialized values will be invalid.
●As the tires will be warm when regis-
tration is completed, make sure to
allow the tires to cool before perform-
ing initialization.
■Canceling ID code registration
●To cancel ID code registration after it

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Maintenance and care
has been started, operate the multi-
information display again to select
“Identifying Each Wheel & Position”.
(→P.283)
●If ID code registration has been can-
celed, the tire pressure warning light
will blink for approximately 1 minute
when the engine switch is turned to
ON mode and then illuminate. The tire
pressure warning system will be oper-
ational when the tire pressure warning
light turns off.
●If the warning light does not turn off
even after several minutes have
elapsed, ID code registration may not
have been canceled correctly. To can-
cel registration, perform the ID code
registration start procedure again and
then turn the engine switch off before
driving.
■If ID codes are not registered prop-
erly
●In the following situations, ID code
registration may take longer than
usual to be completed or may not be
possible. (Usually, the vehicle will
need to be driven for approximately
10 to 30 minutes to complete ID code
registration.)
If ID code registration is not complete
after driving for approximately 30 min-
utes, continue driving for a while.
• If the vehicle is driven on an unpaved
road, it may take longer than normal
to complete registration.
• If the vehicle is backed up while per-
forming registration, data collected
during registration will be cleared, and
it will take longer than normal to com-
plete.
• If the vehicle is driven in heavy traffic
or another situation where other vehi-
cles are driven close by, it may take
time for the system to recognize the
tire pressure warning valve and trans-
mitters of your vehicle over those of
other vehicles.
• If a wheel with a tire pressure warning
valve and transmitter installed is
inside or near the vehicle, registration
of the ID codes for the installed wheels may not be possible.
If ID registration is not complete after
driving for approximately 1 hour, park
the vehicle in a safe place for approxi-
mately 20 minutes and then perform the
ID code registration procedure again.
●In the following situations, ID code
registration will not be started or was
not completed properly and the sys-
tem will not operate properly. Perform
the ID code registration procedure
again.
• If, when attempting to start ID code
registration, the tire pressure warning
light does not blink slowly 3 times.
• If, when the vehicle has been driven
for about 10 minutes after performing
ID code registration, the tire pressure
warning light blinks for approximately
1 minute and then illuminates.
●If ID code registration cannot be com-
pleted after performing the above pro-
cedure, contact any authorized Toyota
retailer or Toyota authorized repairer,
or any reliable repairer.
Your vehicle is equipped with tire
pressure warning system with the
function to have ID codes regis-
tered for a second wheel set, for
example a winter set, by any autho-
rized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer.
After registration of a second wheel
set, either of these two wheel sets
can be selected for usage with the
tire pressure warning system.
■Operating conditions for the
function
zThis function will perform the
Selecting wheel set

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change of wheel set only if a sec-
ond wheel set has been regis-
tered. If no second wheel set has
been registered, the ID cannot
be changed even if “Identifying
Each Wheel & Position” is
selected in the multi-information
display and waiting for 2 min-
utes.
zOnly a change between both
registered wheel set is possible,
mixing between these wheel sets
is not supported.
■How to change between wheel
sets
1Have the vehicle fitted with the
preferred wheel set.
2Press / of the meter con-
trol switch to select .
3Press / to select “Vehicle
Settings” and then press and
hold .
4Press / to select “TPWS
setting” and then press .
5Press / to select “Identi-
fying Each Wheel & Position”.
Then press and hold until
the tire pressure warning light
blinks slowly 3 times. Afterward, turns on after flashing for 1 min-
ute.
After 2 minutes, registration of a second
wheel set is being performed and the
tire pressure warning light will turn off.
6Initialize the tire pressure warn-
ing system. (→P.282)
If the tire inflation pressure settings for
the installed tire changes, initialization
operations are required, but if the same
tire inflation pressure, initialization is
not required.
7Drive straight (with occasional
left and right turns) at approxi-
mately 40 km/h (25 mph) or
more for approximately 10 to 30
minutes.
Registration of a second wheel set is
complete when the tire pressure warn-
ing light turns off and the inflation pres-
sure of each tire is displayed on the
multi-information display.

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3Lower the vehicle.
4 Firmly tighten each wheel nut
two or three times in the order
shown in the illustration.
Tightening torque: 103 N•m (10.5 kgf•m, 76 ft•lbf)
5 Stow the tire jack and all tools.
■After completing the tire change
The tire pressure warning system must be reset. ( →P.282)
Tire inflation pressure is specified
on the label on the driver’s side
door frame as shown.
Left-hand drive vehicles
Right-hand drive vehicles
WARNING
■After using the tools and jack
Before driving, make sure all the tools and jack are securely in place in their
storage location to reduce the possi- bility of personal injury during a colli-sion or sudden braking.
Tire inflation pressure
Make sure to maintain proper
tire inflation pressure. Tire
inflation pressure should be
checked at least once per
month. However, Toyota rec-
ommends that tire inflation
pressure be checked once
every two weeks. ( →P. 3 5 7 )
Tire-loading information
label

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Maintenance and care
■Effects of incorrect tire inflation pressure
Driving with incorrect tire inflation pres- sure may result in the following:
●Reduced safety
●Damage to the drive train
●Reduced tire life due to wear
●Reduced fuel economy
●Reduced driving comfort and poor
handling
If a tire needs frequent inflating, have it checked by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
■Instructions for checking tire infla-tion pressure
When checking tire inflation pressure, observe the following:
●Check only when the tires are cold.If your vehicle has been parked for at least 3 hours or has not been driven
for more than 1.5 km or 1 mile, you will get an accurate cold tire inflation pressure reading.
●Always use a tire pressure gauge.It is difficult to judge if a tire is properly
inflated based only on its appearance.
●It is normal for the tire inflation pres-
sure to be higher after driving as heat is generated in the tire. Do not reduce
tire inflation pressure after driving.
●Passengers and luggage weight
should be placed so that the vehicle is balanced.
WARNING
■Proper inflation is critical to save
tire performance
Keep your tires properly inflated. If the tires are not properly inflated,
the following conditions may occur which could lead to an accident resulting in death or serious injury:
●Excessive wear
●Uneven wear
●Poor handling
●Possibility of blowouts resulting from overheated tires
●Air leaking from between tire and wheel
●Wheel deformation and/or tire dam-age
●Greater possibility of tire damage while driving (due to road hazards,
expansion joints, sharp edges on the road, etc.)
NOTICE
■When inspecting and adjusting
tire inflation pressure
Be sure to put the tire valve caps back on.
If a valve cap is not installed, dirt or moisture may get into the valve and cause an air leak, resulting in
decreased tire inflation pressure.

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When replacing wheels, care
should be taken to ensure that they
are equivalent to those removed in
load capacity, diameter, rim width
and inset*.
Replacement wheels are available
at any authorized Toyota retailer or
Toyota authorized repairer, or any
reliable repairer.
*: Conventionally referred to as offset.
Toyota does not recommend using
the following:
z Wheels of different sizes or types
z Used wheels
z Bent wheels that have been
straightened
■When replacing wheels
The wheels of your vehicle are equipped with tire pressure warning valves and
transmitters that allow the tire pressure warning system to provide advance warning in the event of a loss in tire
inflation pressure. Whenever wheels are replaced, the tire pressure warning valves and transmitters must be
installed. ( →P.281)
Wheels
If a wheel is bent, cracked or
heavily corroded, it should be
replaced. Otherwise, the tire
may separate from the wheel
or cause a loss of handling
control.
Wheel selection
WARNING
■When replacing wheels
●Do not use wheels that are a differ-
ent size from those recommended in the Owner’s Manual, as this may result in a loss of handling control.
●Never use an inner tube in a leak-ing wheel which is designed for a
tubeless tire. Doing so may result in an accident, causing death or serious injury.
■When installing the wheel nuts
Never use oil or grease on the wheel
bolts or wheel nuts. Oil and grease may cause the wheel nuts to be excessively tightened,
leading to bolt or disc wheel damage. In addition, the oil or grease can cause the wheel nuts to loosen and
the wheel may fall off, causing an accident and resulting in death or serious injury. Remove any oil or
grease from the wheel bolts or wheel nuts.
■Use of defective wheels prohib-ited
Do not use cracked or deformed
wheels. Doing so could cause the tire to leak air during driving, possibly causing an accident.
NOTICE
■Replacing tire pressure warning
valves and transmitters
●Because tire repair or replacement may affect the tire pressure warning
valves and transmitters, make sure to have tires serviced by any autho-rized Toyota retailer or Toyota
authorized repairer, or any reliable repairer. In addition, make sure to purchase your tire pressure warn-
ing valves and transmitters at any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.

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Maintenance and care
zUse only Toyota wheel nuts and
wheel nut wrenches designed for
use with your aluminum wheels.
z When rotating, repairing or
changing your tires, check that
the wheel nuts are still tight after
driving 1600 km (1000 miles).
z Be careful not to damage the
aluminum wheels when using
tire chains.
z Use only Toyota genuine balance
weights or equivalent and a plas-
tic or rubber hammer when bal-
ancing your wheels.
1 Turn the engine switch off.
2 Open the glove box. Slide off
the damper.
3 Push in the glove box on the
vehicle’s outer side to discon-
nect the 2 claws. Then pull out
the glove box and disconnect
the lower claws.
NOTICE
●Ensure that only genuine Toyota wheels are used on your vehicle.
Tire pressure warning valves and transmitters may not work properly with non-genuine wheels.
Aluminum wheel precau-
tions
Air conditioning filter
The air conditioning filter must
be changed regularly to main-
tain air conditioning efficiency.
Removing the air condition-
ing filter