2023 TOYOTA SIENNA HYBRID warning light

4326-3. Do-it-yourself maintenance
●Make sure to initialize the tire
pressure warning system after
registering the ID codes. If the
system is initializ ed before regis-
tering the ID codes, the initialized
values will be invalid.
●ID codes can be registered by
yourself, but depending on the
driving conditions and driving
environment, registration may
take some time to complete.
●As the tires will be warm when
registration is completed, make
sure to allow the tires to cool
before performing initialization.
■Canceling ID code registration
●To cancel ID code registration
after it has been started, select
“Identifying Each Wheel & Posi-
tion” on the multi-information dis-
play and press and hold “OK”
again.
●If ID code registration has been
canceled, the tire pressure warn-
ing light will blink for approxi-
mately 1 minute when the power
switch is turned to ON and then
illuminate. The tir e pressure warn-
ing system will be operational
when the tire pressure warning
light turns off.
●If the warning light does not turn
off even after se veral minutes
have elapsed, ID code registration
may not have bee n canceled cor-
rectly. To cancel registration, per-
form the ID code registration start
procedure again and then turn the
power switch off before driving.
■If ID codes are not registered
properly
●In the following situations, ID code
registration may take longer than
usual to be completed or may not
be possible. Normally, registra-
tion completes within approxi-
mately 30 minutes.
If ID code registration is not com-
plete after driving for approxi-
mately 30 minutes, continue
driving for a while. • Vehicle is not pa
rked for approxi-
mately 20 minutes or more before
driving
• 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
• Wheel with tire p ressure warning
valve and transmitter installed is
inside or near the vehicle
If registration does not complete
after driving for 1 hour or more, per-
form the ID code registration proce-
dure again from the beginning.
●If the vehicle is reversed during
registration, the data up to that
point is reset, so p erform the reg-
istration procedure again from the
beginning.
●In the following situations, ID code
registration will not be started or
was not completed properly and
the system will not operate prop-
erly. Perform the ID code registra-
tion procedure again.
• If, when attempt ing to start ID
code registration, the tire pressure
warning light does not blink slowly
3 times.
• If, when the veh icle has been
driven for about 20 minutes after
performing ID code registration,
the tire pressure warning light
blinks for approximately 1 minute
and then illuminates.
If the ID codes cannot be registered
even when performing the above
procedure, contact your Toyota
dealer.
Your vehicle is equipped with
tire pressure warning system
Selecting wheel set

4336-3. Do-it-yourself maintenance
6
Maintenance and care
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.427)
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.

4346-3. Do-it-yourself maintenance
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.427)
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.

4416-3. Do-it-yourself maintenance
6
Maintenance and care
1Turn the power switch off.
2 Using a Phillips screwdriver,
remove the clip.
3 Remove the air intake vent
cover.
Pull the cover as shown in the illus-
tration to disengage the claws,
starting from the claw in the upper
right corner and pull the cover
toward the front of the vehicle to remove it.
4
Remove the filter from the air
intake vent cover.
Disengage the 3 center claws from
the filter.
If dust has accumula ted on the air
intake vent cover, remove the dust
with a vacuum cleaner, etc.
5 Remove the dust and sand
from the filter.
Using a vacuum cleaner, etc.,
absorb dust and sand from the filter
by profiling the nozzle lightly along
the fold.
NOTICE
■If “Maintenance Required for
Traction Battery Cooling
Parts See Owner’s Manual” is
displayed on the multi-infor-
mation display
Clean the air intake vents immedi-
ately.
If the vehicle is continuously
driven with the warning message
displayed, it may cause a mal-
function or output restriction of the
hybrid battery (tr action battery).
Cleaning procedure

4426-3. Do-it-yourself maintenance
6Hold the filter to the light and
check if it is not clogged.
If the dust or sa nd cannot be
removed complete ly, contact your
Toyota dealer.
7 Reinstall the filter to the
cover.
Engage the 3 center claws to install
the filter.
Make sure that t he filter is not
crooked or deformed when install-
ing it.
8 Install the air intake vent
cover.
I ns er t t he t ab o f th e co ve r a s sh ow n
in the illustrati on and push the cover to enga
ge the claws.
9Using a Phillips screwdriver,
install the clip.
If “Maintenance Required for
Traction Battery Cooling Parts
See Owner’s Manual” was
displayed on the multi-infor-
mation display
10Start the hybrid system and check that the warning mes-
sage is no longer displayed.
It may take appro ximately 20 min-
utes after the hybrid system is
started until the warning message
disappears.
If the warning message does not
disappear after some time, have
the vehicle inspected by your
Toyota dealer.
■If the dust or sand on the filter
cannot be removed
It is recommended to use a vacuum
cleaner with plastic brushes.

4476-3. Do-it-yourself maintenance
6
Maintenance and care
Blown fuse
Type BNormal fuse
Blown fuse
Type CNormal fuse
Blown fuse
■After a fuse is replaced
●When installing the lid, make sure
that the tab is installed securely.
●If the lights do n ot turn on even
after the fuse has been replaced,
a bulb may need replacement.
(  P.448)
●If the replaced fuse blows again,
have the vehicle inspected by
your Toyota dealer.
■If there is an overload in a cir-
cuit
The fuses are designed to blow,
protecting the wiring harness from damage.
■When replacing light bulbs
Toyota recommends that you use
genuine Toyota products designed
for this vehicle. Because certain
bulbs are connected to circuits
designed to prevent overload, non-
genuine parts or parts not designed
for this vehicle may be unusable.
B
A
B
A
B
WARNING
■To prevent system break-
downs and vehicle fire
Observe the following precau-
tions.
Failure to do so may cause dam-
age to the vehicle, and possibly a
fire or injury.
●Never use a fuse of a higher
amperage rating than that indi-
cated, or use any other object in
place of a fuse.
●Always use a genuine Toyota
fuse or equivalent.
Never replace a fuse with a
wire, even as a temporary fix.
●Do not modify the fuses or fuse
boxes.
NOTICE
■Before replacing fuses
Have the cause of electrical over-
load determined and repaired by
your Toyota dealer as soon as
possible.
■To prevent damage to the
engine compartment fuse box
cover
When opening the fuse box, com-
pletely release the claw locks
before lifting up the cover. Other-
wise, the claws may be damaged.

4526-3. Do-it-yourself maintenance
3Remove the light bulb.
4 Install a new light bulb.
5 Install the lens.
Hooks
1 Fit the lens into either the right or left hooks.
2 Push the lens into place.
After installation, confirm that the
lens is properly installed by gently
pulling it.
6Install the cover.
A
WARNING
■Replacing light bulb
●Turn off the light. Do not attempt
to replace the bu lb immediately
after turning off the light.
The bulb becomes very hot and
may cause burns.
●Do not touch the glass portion
of the light bulb with bare
hands. When it is unavoidable
to hold the glass portion, use
and hold with a clean dry cloth
to avoid getting moisture and
oils on the bulb.
Also, if the bulb is scratched or
dropped, it may blow out or
crack.
●Fully install light bulb and any
parts used to secure it. Failure
to do so may result in heat dam-
age, fire, or water entering the
light unit. This may damage the
light or cause condensation to
build up on the lens.

4536-3. Do-it-yourself maintenance
6
Maintenance and care
WARNING
●Do not attempt to repair or dis-
assemble light bulbs, connec-
tors, electric circuits or
component parts.
Doing so may result in death or
serious injury due to electric
shock.
■To prevent damage or fire
●Make sure bulb is fully seated
and locked.
●Check the wattage of the bulb
before installing to prevent heat
damage.