display TOYOTA SIENNA HYBRID 2021 Owners Manual (in English)

4286-3. Do-it-yourself maintenance
“TPWS Setting”, and then
press “OK”.
6 Press or to select
“Setting UNIT”.
7 Press or to select the
desired unit and then press
“OK”.
With 7-inch display
1 Park the vehicle in a safe
place and turn the power
switch off.
Changing the unit cannot be per-
formed while the vehicle is moving.
2Turn the power switch to ON.
3 Press or of the meter
control switches on the steer-
ing wheel and select .
4 Press or of the meter
control switches and select
, and then press and hold
“OK”.
5 Press or of the meter
control switches and select
“TPWS Setting”, and then
press “OK”.
6 Press or to select
“Setting UNIT”.
7 Press or to select the
desired unit and then press
“OK”.
■Routine tire inflation pressure
checks
The tire pressure warning system
does not replace routine tire inflation
pressure checks. Make sure to check tire inflation pressure as part
of your routine o
f daily vehicle
checks.
■Tire inflation pressure
●It may take a few minutes to dis-
play the tire inflation pressure
after the power switch is turned to
ON. It may also take a few min-
utes to display the tire inflation
pressure after infl ation pressure
has been adjusted.
●Tire inflation pressure changes
with temperature.
The displayed values may also be
different from the values mea-
sured using a tire pressure gauge.
■Situations in which the tire
pressure warning system may
not operate properly
●In the following cases, the tire
pressure warning system may not
operate properly.
• If non-genuine Toyota wheels are
used.
• A tire has been replaced with a tire that is not an OE (Original
Equipment) tire.
• A tire has been replaced with a tire that is not of the specified size.
• Tire chains, etc. are equipped.
• An auxiliary-support ed run-flat tire
is equipped.
• If a window tint that affects the radio wave signals is installed.
• If there is a lot of snow or ice on
the vehicle, particularly around the
wheels or wheel housings.
• If the tire inflation pressure is
extremely higher than the speci-
fied level.
• If wheel withou t tire pressure
warning valves and transmitters
are used.
• If the ID code on the tire pressure warning valves and transmitters is
not registered in the tire pressure
warning computer.
●Performance may be affected in
the following situations.
• Near a TV tower, electric power
plant, gas station, radio station,

4296-3. Do-it-yourself maintenance
6
Maintenance and care
large display, airport 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
If tire position information is not cor-
rectly displayed due to the radio
wave conditions, the display may be
corrected by driving and changing
the radio wave conditions.
●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 warning may
not function.
■Warning performance of the tire
pressure warning system
The warning of the tire pressure
warning system will change in
accordance with th e conditions
under which it was initialized. 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
transmitters must also be
installed.
When new tire pressure warning
valves and transmitters are
installed, new ID codes must be
registered in the tire pressure
warning computer and the tire pressure warning system must
be initialized. (
P.433)
■When replacing the tires and
wheels
If the ID code of the tire pressure
warning valve and tr ansmitter is not
registered, the tire pressure warning
system will not work properly. After
driving for about 20 minutes, the tire
pressure warning light blinks for 1
minute and stays on to indicate a
system malfunction.
Installing tire pressure
warning valves and trans-
mitters
NOTICE
■Repairing or replacing tires,
wheels, tire pressure warn-
ing valves, transmitters and
tire valve caps
●When removing or fitting the
wheels, tires or the tire pressure
warning valves and transmit-
ters, contact your Toyota dealer
as the tire pressure warning
valves and transmitters may be
damaged if not handled cor-
rectly.
●Make sure to install the tire
valve caps. If the tire valve caps
are not installed, water could
enter the tire pressure warning
valves and the tire pressure
warning valves could be bound.
●When replacing tire valve caps,
do not use tire valve caps other
than those specified.
The cap may become stuck.

4306-3. Do-it-yourself maintenance
■The tire pressure warning
system must be initialized
in the following circum-
stances:
 When rotating the tires.
 When changing the tire.
 After registering the ID codes.
( P.433)
 When 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
pressure warning system
With 4.2-inch display
1 Park the vehicle in a safe
place and stop the hybrid
system for 20 minutes or
more.
Initialization cannot be performed
while the vehicle is moving.
2Adjust the tire inflation pres-
sure to the specified cold tire
inflation pressure level.
( P.525)
Make sure to adjust the tire pres-
sure to the specifie d cold tire infla-
tion pressure level. The tire
pressure warning system will oper-
ate based on this pressure level.
3Start the hybrid system.
4 Press or of the meter
control switches on the steer-
ing wheel and select .
5 Press or of the meter
control switches, select
“Vehicle Settings” and then
press and hold “OK”.
6 Press or of the meter
control switches, select
“TPWS Setting” and then
press “OK”.
7 Press or of the meter
control switches, select the
“Setting Pressure”. Then
press and hold “OK”.
“Setting Tire Pressure Warning
System” will be displayed on the
multi-information display and the
tire pressure warning light will blink
NOTICE
■To avoid damage to the tire
pressure warning valves and
transmitters (vehicles without
spare tire)
When a tire is repaired with liquid
sealants, the tire pressure warn-
ing valve and transmitter may not
operate properly. If a liquid seal-
ant is used, conta ct your Toyota
dealer as soon as possible. After
use of liquid sealant, make sure to
replace the tire pressure warning
valve and transmitter when repair-
ing or replacing the tire. ( P.429)
Initializing the tire pres-
sure warning system
OK

4316-3. Do-it-yourself maintenance
6
Maintenance and care
3 times.
When the message disappears, ini-
tialization is complete.
A message is displayed on the
multi-information display. Also, “--”
is displayed for inflation pressure of
each tire on the multi-information
display while the tire pressure
warning system determines the
position.
8 Drive straight (with occa-
sional left and right turns) at
approximately 25 mph (40
km/h) or more for approxi-
mately 10 to 30 minutes.
When initialization is complete, the
inflation pressure of each tire will be
displayed on the multi-information
display.
Even if the vehicle is not driven at
approximately 25 mph (40 km/h) or
more, initializat ion can be com-
pleted by driving for a long time.
However, if initia lization does not
complete after driving for 1 hour or
more, park the vehicle in a safe
place for approximately 20 minutes
and then drive th e vehicle again.
With 7-inch display
1 Park the vehicle in a safe
place and stop the hybrid
system for 20 minutes or
more.
Initialization cannot be performed
while the vehicle is moving.
2Adjust the tire inflation pres-
sure to the specified cold tire
inflation pressure level.
( P.525)
Make sure to adjust the tire pres-
sure to the specifie d cold tire infla-
tion pressure level. The tire
pressure warning system will oper-
ate based on this pressure level.
3 Start the hybrid system. 4
Press or of the meter
control switches on the steer-
ing wheel and select .
5 Press or of the meter
control switches, select
and then press and hold
“OK”.
6 Press or of the meter
control switches, select
“TPWS Setting” and then
press “OK”.
7 Press or of the meter
control switches, select the
“Setting Pressure”. Then
press and hold “OK”.
“Setting Tire Pressure Warning
System” will be displayed on the
multi-information display and the
tire pressure warn ing light will blink
3 times.
When the message disappears, ini-
tialization is complete.
A message is displayed on the
multi-information di splay. Also, “--”
is displayed for inflation pressure of
each tire on the m ulti-information
display while the tire pressure
warning system determines the
position.
8 Drive straight (with occa-
sional left and right turns) at
approximately 25 mph (40
OK

4326-3. Do-it-yourself maintenance
km/h) or more for approxi-
mately 10 to 30 minutes.
When initialization is complete, the
inflation pressure of each tire will be
displayed on the multi-information
display.
Even if the vehicle is not driven at
approximately 25 mph (40 km/h) or
more, initialization can be com-
pleted by driving for a long time.
However, if initia lization does not
complete after driving for 1 hour or
more, park the vehicle in a safe
place for approximately 20 minutes
and then drive th e vehicle again.
■When initializing
●Initialization is performed while
driving at a vehicle speed of
approximately 25 mph (40 km/h)
or more.
●Make sure to carry out initializa-
tion after adjusting the tire inflation
pressure. Also, make sure the
tires are cold before carrying out
initialization or tir e inflation pres-
sure adjustment.
●The tire pressure warning system
can be initialized by yourself, but
depending on the driving condi-
tions and driving environment, ini-
tialization may take some time to
complete.
■The initialization operation
●If you have accidentally turned the
power switch to OFF during initial-
ization, it is not necessary to
restart the initia lization again as
initialization will restart automati-
cally when the power switch has
been turned to ON for the next
time.
●If you accidentally perform initial-
ization when initi alization is not
necessary, adjust the tire inflation
pressure to the specified level
when the tires are cold, and con-
duct initialization again.
●While the position of each tire is being determined and the inflation
pressures are not being displayed
on the multi-information display, if
the inflation pressure of a tire
drops, the tire pressure warning
light will come on.
■If the tire pressure warning sys-
tem is not initia
lized properly
●In the following situations, initial-
ization may take longer than usual
to be completed or may not be
possible. Normally, initialization
completes within approximately
30 minutes.
• Vehicle is not driven at approxi-
mately 25 mph (40 km/h) or more
• Vehicle is driven on unpaved roads
• Vehicle is driven near other vehi- cles and system cannot recog-
nize tire pressure warning valve
and transmitters o f your vehicle
over those of other vehicles.
• If the vehicle is driven in heavy
traffic or another situation where
other vehicles are driven close by,
it may take time f or the system to
recognize the ti re pressure warn-
ing valve and transmitters of your
vehicle over those of other vehi-
cles.
●If initialization does not complete
after driving for 1 hour or more,
park the vehicle in a safe place for
approximately 20 minutes and
then drive the v ehicle again.
●If the vehicle is reversed during
initialization, the data up to that
point is reset, so p erform the ini-
tialization procedure again from
the beginning.
●In the following situations, initial-
ization will not be started or was
not completed properly and the
system will not oper ate properly.
Perform the initialization proce-
dure again.
• If, when attempting to start initial- ization, the tire pressure warning
light does not blink 3 times.
• If, when the veh icle has been
driven for about 20 minutes after

4336-3. Do-it-yourself maintenance
6
Maintenance and care
performing initialization, the tire
pressure warning light blinks for
approximately 1 minute and then
illuminates.
If the inflation pressure of each tire
is still not displayed, have the vehi-
cle inspected by your Toyota dealer.
Every tire pressure warning
valve and transmitter has a
unique ID code. When replacing
a tire pressure warning valve
and transmitter, it is necessary
to register the ID code.
When registering the ID codes,
perform the following procedure.
With 4.2-inch display
1 Park the vehicle in a safe
place, wait for approximately
20 minutes, and then start
the hybrid system.
2 Press or of the meter
control switches on the steer-
ing wheel and select .
3 Press or of the meter
control switches and select “Vehicle Settings”, and then
press and hold “OK”.
4 Press or of the meter
control switches and select
“TPWS Setting”, and then
press “OK”.
5 Press or of the meter
control switches and select
“Identifying Each Wheel &
Position”. Then press and
hold “OK” until the tire pres-
sure warning light starts
slowly blinking 3 times.
The change wheel set mode is acti-
vated and registra tion is started.
Then a message will be displayed
on the multi-information display.
When registration is being per-
formed, the tire pressure warning
light will blink for approximately 1
minute then illuminate and “--” will
be displayed for the inflation pres-
sure of each tire on the multi-infor-
mation display.
6 Drive straight (with occa-
sional left and right turns) at
approximately 25 mph (40
km/h) or more for approxi-
mately 10 to 30 minutes.
When registration is completed, the
tire pressure warning light will go off
and the inflation pressure of each
tire will be displayed on the multi-
WARNING
■When initializing the tire pres-
sure warning system
Do not initializing tire inflation
pressure without first adjusting
the tire inflation pressure to the
specified 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

4346-3. Do-it-yourself maintenance
information display.
Even if the vehicle is not driven at
approximately 25 mph (40 km/h) or
more, registration can be com-
pleted by driving for a long time.
However, if registration does not
complete after driving for 1 hour or
more, perform the procedure again
from the beginning.
7Initialize the tire pressure
warning system. ( P.430)
With 7-inch display
1 Park the vehicle in a safe
place, wait for approximately
20 minutes, and then start
the hybrid system.
2 Press or of the meter
control switches on the steer-
ing wheel and select .
3 Press or of the meter
control switches and select
, and then press and hold
“OK”.
4 Press or of the meter
control switches and select
“TPWS Setting”, and then
press “OK”.
5 Press or of the meter
control switches and select
“Identifying Each Wheel &
Position”. Then press and
hold “OK” until the tire pres-
sure warning light starts
slowly blinking 3 times.
The change wheel set mode is acti-
vated and registration is started.
Then a message w ill be displayed
on the multi-info rmation display.
When registration is being per- formed, the tire pressure warning
light will blink for
approximately 1
minute then illumi nate and “--” will
be displayed for the inflation pres-
sure of each tire o n the multi-infor-
mation display.
6 Drive straight (with occa-
sional left and right turns) at
approximately 25 mph (40
km/h) or more for approxi-
mately 10 to 30 minutes.
When registration is completed, the
tire pressure warning light will go off
and the inflation pressure of each
tire will be displaye d on the multi-
information display.
Even if the vehicle is not driven at
approximately 25 mph (40 km/h) or
more, registration can be com-
pleted by driving for a long time.
However, if registr ation does not
complete after driving for 1 hour or
more, perform the p rocedure again
from the beginning.
7 Initialize the tire pressure
warning system. ( P.430)
■When registering ID codes
●ID code registrati on is performed
while driving at a vehicle speed of
approximately 25 mph (40 km/h)
or more.
●Before performing ID code regis-
tration, make sure that no wheels
with tire pressure warning valve
and transmitters installed are near
the vehicle.

4366-3. Do-it-yourself maintenance
with the function to have ID
codes registered for a second
wheel set, for example a winter
set. You can register a second
wheel set by yourself or your
Toyota dealer.
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
 This function will perform the
change of wheel set only if a
second wheel set has been
registered. If no second wheel
set has been registered, no
change will be made when
selecting this function in the
menu.
 Only a change between both
registered wheel set is possi-
ble, mixing between these
wheel sets is not supported.
■How to change between
wheel sets
1 Have the vehicle fitted with
the preferred wheel set.
With 4.2-inch display
2 Press or of the meter
control switches on the steer-
ing wheel and select .
3 Press or of the meter
control switches and select
“Vehicle Settings”, and then
press and hold “OK”. 4
Press or of the meter
control switches and select
“TPWS Setting”, and then
press “OK”.
5 Press or of the meter
control switches and select
“Identifying Each Wheel &
Position”. Then press and
hold “OK” until the tire pres-
sure warning light starts
slowly blinking 3 times.
Afterward, the tire pressure
warning light turns on after
flashing for 1 minute.
After 2 minutes, registration of a
second wheel set is being per-
formed. The tire pressure warn-
ing light will turn off and “--” will
be displayed for the inflation
pressure of each tire on the
multi-information display.
6 Initialize the tire pressure
warning system. ( P.430)
If the tire inflation pressure settings
for the installed ti res change, initial-
ization operations are required, but
if the tire inflation pressure settings
are the same, init ialization is not
required.
7 Drive straight (with occa-
sional left and right turns) at
approximately 25 mph (40
km/h) or more for approxi-
mately 10 to 30 minutes.
Registration of a second wheel set
is complete when the tire pressure
warning light turns off and the infla-
tion pressure of each tire is dis-
played on the multi-information
display.

4376-3. Do-it-yourself maintenance
6
Maintenance and care
With 7-inch display
2 Press or of the meter
control switches on the steer-
ing wheel and select .
3 Press or of the meter
control switches and select
, and then press and hold
“OK”.
4 Press or of the meter
control switches and select
“TPWS Setting”, and then
press “OK”.
5 Press or of the meter
control switches and select
“Identifying Each Wheel &
Position”. Then press and
hold “OK” until the tire pres-
sure warning light starts
slowly blinking 3 times.
Afterward, the tire pressure warning
light turns on after flashing for 1
minute.
After 2 minutes, registration of a
second wheel set is being per-
formed. The tire pressure warning
light will turn off a nd “--” will be dis-
played for the inflation pressure of
each tire on the multi-information
display.
6 Initialize the tire pressure
warning system. ( P.430)
If the tire inflation pressure settings
for the installed ti res change, initial-
ization operations are required, but
if the tire inflation pressure settings
are the same, initialization is not
required.
7 Drive straight (with occa-
sional left and right turns) at
approximately 25 mph (40km/h) or more for approxi-
mately 10 to 30 minutes.
Registration of a second wheel set
is complete when the tire pressure
warning light turns off and the infla-
tion pressure of each tire is dis-
played on the multi-information
display.

4386-3. Do-it-yourself maintenance
The recommended cold tire
inflation pressure and tire size
are displayed on the tire and
loading information label.
(P.525) Tire valve
Tire pressure gauge
1 Remove the tire valve cap.
2 Press the tip of the tire pres-
sure gauge onto the tire
valve.
3 Read the pressure using the
gauge gradations.
4 If the tire inflation pressure is
not at the recommended
level, adjust the pressure. If
you add too much air, press
the center of the valve to
deflate.
5 After completing the tire infla-
tion pressure measurement
and adjustment, apply soapy
water to the valve and check
for leakage.
6 Put the tire valve cap back
on.
■Tire inflation pressure check
interval
You should check tire inflation pres-
sure every two week s, or at least
once a month.
Tire inflation pressure
Make sure to maintain the
proper tire inflation pres-
sure. Tire inflation pressure
should be checked at least
once per month. However,
Toyota recommends that
tire inflation pressure be
checked once every two
weeks. ( P.525)
Checking the specified
tire inflation pressure
Inspection and adjust-
ment procedure
A
B