maintenance schedule TOYOTA SIENNA HYBRID 2023 Owners Manual

1162-1. Instrument cluster
Select to change the tire pressure
warning system sensor ID code set.
To enable this function, a second
set of tire pressure warning system
sensor ID codes must be registered
by a Toyota dealer. For information
regarding changing the registered
ID code set, contact your Toyota
dealer.
• “Setting UNIT”
Select to change the units of the
tire pressure displayed.
 “Scheduled Maintenance”
( P.403)
Select to reset the scheduled main-
tenance information (message indi-
cating maintenance is required and
distance until the next mainte-
nance) after all maintenance is per-
formed.
“Oil Maintenance” ( P.415)
Select to reset the Oil maintenance.
■ Meter Settings
 “Language”
Select to change the language on
the multi-inform ation display.
“Units”
Select to change t he units of mea-
sure displayed.
 Digital Speed (7-inch display)
Select to enable/disable the speed-
ometer display.
 EV indicator ( P.80)
Select to enable/disable the EV
indicator.
 Driving information display
settings
Select to set up t he following items.
• “Hybrid System”
Select to enable/disable the ECO
Accelerator Guidance (P.108).
• “Fuel Economy”
Select to change the average fuel
economy display ( P.106).
 Audio settings
Select to enable/disable the audio
system-linked display.
 Vehicle information dis-
play settings
• “Display Contents”
Select to displa y the following
items.
“Energy monitor”
Select to enable/disable the Energy
monitor ( P.122)
“AWD” (AWD models)
Select to enable /disable the AWD
system display ( P.112).
• “Drive Info Type” (4.2-inch dis- play)
Select to change the drive informa-
tion type between trip and total
(  P.111).
• “Drive Info Items” (4.2-inch dis- play)
Select to set the items on the upper
and lower side of the drive informa-
tion screen. from th ree items, aver-
age speed, distance and total time.
 “Trip Summary” (4.2-inch dis-
play)
Select to set the items displayed
when the power switch is turned off.
“Pop-Up Display”

2314-1. Before driving
4
Driving
down too long or applying the
brakes too frequently. This
could cause the brakes to
overheat and result in
reduced braking efficiency.
 Due to the added load of the
trailer, your vehicle’s hybrid
system may overheat on hot
days (at temperatures over
85°F [30°C]) when driving up
a long or steep grade. If the
engine coolant temperature
gauge indicates overheating,
immediately turn off the air
conditioning (if in use), pull
your vehicle off the road and
stop in a safe spot. ( P.509)
 Always place wheel blocks
under both the vehicle’s and
the trailer’s wheels when
parking. Apply the parking
brake firmly, and put the
transmission in P. Avoid park-
ing on a slope, but if unavoid-
able, do so only after
performing the following:
1 Apply the brakes and keep
them applied.
2 Have someone place wheel
blocks under both the vehi-
cle’s and trailer’s wheels.
3 When the wheel blocks are in
place, release the brakes
slowly until the blocks absorb
the load.
4 Apply the parking brake
firmly. 5
Shift into P and turn off the
hybrid system.
 When restarting after parking
on a slope:
1 With the transmission in P,
start the hybrid system. Be
sure to keep the brake pedal
depressed.
2 Shift into a forward gear. If
reversing, shift into R.
3 If the parking brake is in man-
ual mode, release the park-
ing brake. ( P.246)
4 Release the brake pedal, and
slowly pull or back away from
the wheel blocks. Stop and
apply the brakes.
5 Have someone retrieve the
blocks.
■Break-in schedule
If your vehicle is new or equipped
with any new power train compo-
nents (such as an engine, transmis-
sion, differential or wheel bearing),
Toyota recommends that you do not
tow a trailer until the vehicle has
been driven for over 500 miles (800
km).
After the vehicle has been driven for
over 500 miles (800 km), you can
start towing. However, for the next
500 miles (800 km), drive the vehi-
cle at a speed of less than 45 mph
(72 km/h) when towing a trailer, and
avoid full throttle acceleration.
■Maintenance
●If you tow a traile r, your vehicle
will require more fr equent mainte-
nance due to the additional load.
(See “Scheduled Maintenance
Guide” or “Owner ’s Manual Sup-
plement”.)

4026-2. Maintenance
6-2.Maintenance
■Repair and replacement
It is recommended that genuine
Toyota parts be used for repairs to
ensure performanc e of each sys-
tem. If non-Toyota p arts are used in
replacement or if a repair shop other
than a Toyota dealer performs
repairs, confirm the warranty cover-
age.
■Allow inspection and repairs to
be performed by a Toyota
dealer
●Toyota technicians are well-
trained specialists and are kept up
to date with the latest service
information. They are well
informed about the operations of
all systems on your vehicle.
●Keep a copy of the repair order. It
proves that the maintenance that
has been performed is under war-
ranty coverage. If any problem
should arise while your vehicle is
under warranty, your Toyota
dealer will promptly take care of it.
General maintenance should be
performed on a daily basis. This
can be done by yourself or by a
Toyota dealer.
Scheduled maintenance should
be performed at specified inter-
vals according to the mainte-
nance schedule.
For details about maintenance
items and schedules, refer to the
“Scheduled Maintenance Guide” or
“Owner’s Manual Supplement”.
Maintenance require-
ments
To ensure safe and econom-
ical driving, day-to-day care
and regular maintenance
are essential. It is the
owner’s responsibility to
perform regular checks.
Toyota recommends the fol-
lowing maintenance:
WARNING
■If your vehicle is not properly
maintained
Improper maintenance could
result in serious damage to the
vehicle and possible death or seri-
ous injury.
■Handling of the 12-volt bat-
tery
●Engine exhaust, some of its
constituents, and a wide variety
of automobile components con-
tain or emit chemicals known to
the State of California to cause
cancer and birth defects and
other reproductive harm. Work
in a well ventilated area.
●Oils, fuels and fluids contained
in vehicles as well as waste pro-
duced by component wear con-
tain or emit chemicals known to
the State of California to cause
cancer and birth defects or
other reproductive harm. Avoid
exposure and wash any
affected area immediately.
●12-volt battery posts, terminals
and related accessories con-
tain lead and lead compounds
which are known to cause brain
damage. Wash your hands after
handling. ( P.419)
General maintenance
Scheduled maintenance

4036-2. Maintenance
6
Maintenance and care
■Resetting the message indicat-
ing maintenance is required
After the required maintenance is
performed according to the mainte-
nance schedule, please reset the
message. To reset the reminder
message, follow the procedure
described below:
4.2-inch display
1 Press or of the meter
control switches to select on
the multi-information display.
2 Press or of the meter
control switches, s elect “Vehicle
Settings” and then press and
hold “OK”.
7-inch display
1 Press or of the meter
control switches to select on
the multi-information display.
2 Press or of the meter
control switches, select and
then press and hold “OK”.
3 Press or of the meter
control switches, select “Sched-
uled Maintenance” and then
press “OK”.
4 Select “Yes” and press “OK”.
A message will be d isplayed on the
multi-information display.
You can perform some mainte-
nance procedures by yourself.
Please be aware that do-it-your-
self maintenance may affect
warranty coverage.
The use of Toyota Repair Manuals
is recommended.
For details about warranty cover-
age, refer to the separate “Owner’s
Warranty Informat ion Booklet” or
“Owner’s Manual Supplement”.
Do-it-yourself mainte-
nance

4066-2. Maintenance
The OBD system determines
that a problem exists some-
where in the emission control
system. Your vehicle may not
pass the I/M test and may need
to be repaired. Contact your
Toyota dealer to service the
vehicle.
When the 12-volt battery is
disconnected or discharged
Readiness codes that are set
during ordinary driving are
erased.
Also, depending on your driv-
ing habits, the readiness
codes may not be completely
set.
 When the fuel tank cap is
Vehicle exterior
ItemsCheck points
Doors
• Do the doors
operate
smoothly?
Engine hood
• Does the engine hood lock system
work properly?
Fluid leaks
• There should not be any signs of
fluid leakage
after the vehicle
has been parked.
Tires
• Is the tire infla-tion pressure
correct?
• The tires should not be damaged
or excessively
worn.
• Have the tires been rotated
according to the
maintenance
schedule?
• The wheel nuts should not be
loose.
Windshield
wipers/rear
window wiper
• The wiper blades should not show
any signs of
cracking, split-
ting, wear, con-
tamination or
deformation.
• The wiper blades should clear the
windshield/rear
window without
streaking or skip-
ping.
Emission inspection
and maintenance (I/M)
programs
Some states have vehicle
emission inspection pro-
grams which include OBD
(On Board Diagnostics)
checks. The OBD system
monitors the operation of
the emission control sys-
tem.
If the malfunction indica-
tor lamp comes on
Your vehicle may not
pass the I/M test in the fol-
lowing situations:

4216-3. Do-it-yourself maintenance
6
Maintenance and care
Terminals
Hold-down clampCheck if the treadwear indica-
tors are showing on the tires.
Also check the tires for uneven
wear, such as excessive wear
on one side of the tread.
Check the spare tire condition
and pressure if not rotated.
New tread
Worn tread
Treadwear indicator
The location of treadwear indicators
is shown by a “TWI” or “ ” mark,
A
B
Tires
Replace or rotate tires in
accordance with mainte-
nance schedules and tread-
wear.
Checking tires
A
B
C

4396-3. Do-it-yourself maintenance
6
Maintenance and care
4With the glove box fully open,
slightly lift up the glove box
and pull toward the seat to
detach the bottom of the
glove box.
Do not use excessive force if the
glove box does not detach when
lightly pulled. Ins tead, pull toward
the seat while slightly adjusting the
height of the glove box.
5 Unlock the filter cover ( ),
pull the filter cover out of the
claws ( ), and remove the
filter cover. 6
Remove the filter case.
7 Remove the air conditioning
filter from the filter case and
replace it with a new one.
The “ UP” marks shown on the
filter should be pointing up.
8When installing, reverse the
steps listed.
■Checking interval
Inspect and replace the air condi-
tioning filter according to the mainte-
nance schedule. In dusty areas or
areas with heavy traffic flow, early
replacement may be required. (For
scheduled maintenance information,
please refer to the “Owner’s Manual
Supplement” or “Scheduled Mainte-
nance Guide”.)
■If air flow from the vents
decreases dramatically
The filter may be clogged. Check
the filter and rep lace if necessary.
A
B

4406-3. Do-it-yourself maintenance
■Scheduled maintenance of the
air intake vents is necessary
when
In some situations such as when the
vehicle is used frequently or in
heavy traffic or dusty areas, the air
intake vents may need to be
cleaned more regularly.
For details, refer to “Scheduled
Maintenance Guide” or “Owner’s
Manual Supplement”.
■Cleaning the air intake vents
Improper handling of the air intake
vent covers and filt ers may result in
damage to them. If you have any
concerns about cleaning the filters,
contact your Toyota dealer.
NOTICE
■When using the air condition-
ing system
Make sure that a filter is always
installed. Using the air condition-
ing system without a filter may
cause damage to the system.
■When removing the glove box
Always follow the specified proce-
dure to remove the glove box
(  P.438). If the glove box is
removed without following the
specified procedure, the hinge of
the glove box may become dam-
aged.
■To prevent damage to the fil-
ter cover
When moving the filter cover in
the direction of arrow to release
the fitting, pay attention not to
apply excessive force to the
claws. Otherwise, the claws may
be damaged.
Cleaning the hybrid
battery (traction bat-
tery) air intake vents
To prevent the fuel econ-
omy from being affected,
visually inspect the hybrid
battery (traction battery) air
intake vents periodically for
clogs.
If they are dusty or clogged
or if “Maintenance Required
for Traction Battery Cooling
Parts See Owner’s Manual”
is displayed on the multi-
information display, clean
the air intake vents using
the following procedures:

4797-2. Steps to take in an emergency
7
When trouble arises
the message is resolved. ( P.268,
464)
●PCS (Pre-Collis ion System)
●LTA (Lane Tracing Assist)
●Dynamic radar cruise control with
full-speed range
■If “Maintenance Required
Soon” is shown
Indicates that all maintenance
according to the driven distance on
the maintenance schedule
* should
be performed soon.
Comes on approximately 4500
miles (7200 km) after the message
has been reset.
If necessary, perform maintenance.
Please reset the message after the
maintenance is performed.
(  P.403)
*: Refer to the separate “Scheduled
Maintenance Guide” or “Owner’
Manual Supplement” for the main-
tenance interval applicable to your
vehicle.
■If “Maintenance Required Visit
Your Dealer” is shown
Indicates that all maintenance is
required to correspond to the driven
distance on the maintenance sched-
ule
*.
Comes on approximately 5000
miles (8000 km) after the message
has been reset. (The indicator will
not work properly unless the mes-
sage has been reset.)
Perform the necessary mainte-
nance. Please reset the message
after the maintenance is performed.
(  P.403)
*: Refer to the separate “Scheduled
Maintenance Guide” or “Owner’
Manual Supplement” for the main-
tenance interval applicable to your
vehicle.
■If “Oil Maintenance Required
Soon” is displayed
Indicates that the engine oil should
be scheduled to be changed.
Check the engine oil and change it if
necessary.
After changing the engine oil, make
sure to reset t he message.
(  P.415)
■If “Oil Maintenance Required
Visit Your Dealer” is displayed
Indicates that the engine oil should
be changed.
Check and change the engine oil
and oil filter by yo ur Toyota dealer.
After changing the engine oil, make
sure to reset t he message.
(
P.415)
■Warning buzzer
 P.471
NOTICE
■“High Power Consumption
Power to Climate Temporar-
ily Limited” is frequently
shown
There is a possible malfunction
relating to the charging system or
the 12-volt battery may be deteri-
orating. Have the vehicle
inspected by your Toyota dealer.
■If “Low Auxiliary Battery See
Owner’s Manual” is displayed
frequently
The 12-volt battery may have
deteriorated.
As the battery may discharge in
this state when left unattended,
have the battery inspected by
your Toyota dealer.