2021 TOYOTA SIENNA HYBRID warning light

3615-1. Using the air conditioning system and defogger
5
Interior features
*: If equipped
Turns the heated steering wheel
on/off
The indicator light comes on when
the heated steering wheel is oper-
ating.
■Operation condition
The power switch is in ON.
Each time the switch is pressed,
the operation condition changes
as follows.
Hi (3 segments lit)  Mid (2
segments lit)  Lo (1 segment
Heated steering
wheel*/seat heat-
ers*/seat ventilators*
 Heated steering wheel
Warm up the grip of the steer-
ing wheel
 Seat heaters
Warm up the seat upholstery
 Seat ventilators
Maintain good ventilation by
sucking air through the seat
upholstery
WARNING
■To prevent minor burn inju-
ries
Care should be taken if anyone in
the following categories comes in
contact with the steering wheel or
seats when the heater is on:
●Babies, small children, the
elderly, the sick and the physi-
cally challenged
●Persons with sensitive skin
●Persons who are fatigued
●Persons who have taken alco-
hol or drugs that induce sleep
(sleeping drugs, cold remedies,
etc.)
NOTICE
■To prevent damage to the
seat heaters and seat ventila-
tors
Do not put heavy objects that
have an uneven surface on the
seat and do not stick sharp
objects (needles, nails, etc.) into
the seat.
■To prevent 12-volt battery dis-
charge
Do not use the functions when the
hybrid system is off.
Heated steering wheel
Operating the seat heat-
ers

3625-1. Using the air conditioning system and defogger
lit)  Off
The level indicato r lights up during
operation.
Front
Rear (second outboard seats)
(if equipped)
■Operation condition
The power swit ch is in ON. Each time the switch is pressed,
the operation condition changes as
follows.
Hi (3 segments lit)
 Mid (2 seg-
ments lit)  Lo (1 segment lit) 
Off
The level indicato r lights up during
operation.
■Operation condition
The power switch is in ON.
■Air conditioning system-linked
control mode
When a seat ventilator is set to Hi,
the fan speed of the seat ventilator
may increase according to the fan
speed of the air conditioning sys-
tem.
WARNING
■To prevent causes of over-
heating and minor burn inju-
ries
Observe the following precautions
when using a seat heater:
●Do not cover the seat with a
blanket or cushion when using
the seat heater.
●Do not use seat heater more
than necessary.
Operating the seat venti-
lators (front seats)

3675-3. Using the storage features
5
Interior features
1Unlock with the mechanical
key
2 Lock with the mechanical key
3 Open (pull up the lever)
■Glove box light
The glove box light turns on when
the tail lights are on.
Press the button to open the
console box.
■Console box light
The console box light turns on when
the tail lights are on.
WARNING
■Items that should not be left
in the vehicle
Do not leave glasses, lighters or
spray cans in the storage spaces,
as this may cau se the following
when cabin temperature becomes
high:
●Glasses may be deformed by
heat or cracked if they come
into contact with other stored
items.
●Lighters or spray cans may
explode. If they come into con-
tact with other stored items, the
lighter may catch fire or the
spray can may release gas,
causing a fire hazard.
■When storage compartments
are not in use
When driving or when the storage
compartments are not in use,
keep it closed.
In the event of sudden braking or
sudden swerving, an accident
may occur due to an occupant
being struck by an open lid or the
items stored inside.
Glove box
WARNING
■Caution while driving
Keep the glove box closed. In the
event of sudden braking or sud-
den swerving, an accident may
occur due to an occupant being
struck by the open glove box or
the items stored inside.
Console box
WARNING
■Caution while driving
Keep the console box closed.
Injuries may resul t in the event of
an accident or sudden braking.

3845-4. Using the other interior features
light will flash orange 2 times.
■Important points of the wireless
charger
●If the electronic key cannot be
detected within the vehicle inte-
rior, charging cannot be done.
When the door is opened and
closed, charging may be tempo-
rarily suspended.
●When charging, the wireless
charging device and portable
device will get warmer, however
this is not a malfunction.
When a portable device gets
warm while charging, charging
may stop due to the protection
function on the portable device
side. In this case, when the tem-
perature of the portable device
drops significantly, charge again.
■Operation sounds
When the power su pply is turned
on, while searching for the portable
device a sound will be produced,
however this is not a malfunction.
■Cleaning the wireless charger
 P.404
■Label indicating precautions for
using the wireless charger
There is a label on the wireless
charger. Follow the instructions on
the label.
WARNING
■Caution while driving
When charging a portable device,
for safety reasons, the driver
should not operate the main part
of the portable device while driv-
ing.
■Caution regarding interfer-
ence with electronic devices
People with implantable cardiac
pacemakers, cardiac resynchroni-
zation therapy-pacemakers or
implantable cardioverter def ibrilla-
tors, as well as any other electri-
cal medical device, should consult
their physician about the usage of
the wireless charger. The opera-
tions of the wireless charger may
have an affect on medical
devices.
■To prevent damage or burns
Observe the following precau-
tions.
Failure to do so may result in a
possibility of equipment failure
and damage, catch fire, burns due
to overheat.
●Do not insert any metallic
objects between the charging
area and the portable device
while charging
●Do not attach sti ckers, metallic
objects, etc., to the charger area
or portable device
●Do not cover wit h cloth, etc.,
and charge
●Do not charge portable devices
other than designated
●Do not attempt to dismantle for
disassembly or modifications
●Do not hit or apply a strong
force

3935-4. Using the other interior features
5
Interior features
operating.
Buttons
Vehicles with Digital Rear-
view MirrorHomeLink
® indicator light
Illuminates above each button
selected.
HomeLink® icon
Garage door operation indi-
cators
HomeLink
® logo
Appears while HomeLink® is oper-
ating.
When the menu button ( P.189) is
pressed, the logo disappears even
while the HomeLink
® is operating.
Setting icon
Press the menu button to change
the setting.
Menu buttons
HomeLink
® buttons
■Codes stored in the HomeLink®
memory
●The registered codes are not
erased even if the 12-volt battery
cable is disconnected.
●If learning failed when registering
a different code to a HomeLink®
button that already has a code
registered to it, the already regis-
tered code will not be erased.
■When support is necessary
Visit on the web at
www.homelink.com/toyota
or call 1-
800-355-3515.
D
A
B
C
D
E
F
G
WARNING
■When programming a garage
door or other remote control
device
The garage door or other device
may operate, so ensure people
and objects are out of danger to
prevent potential harm.
■Conforming to federal safety
standards
Do not use the HomeLink
® com-
patible transce iver with any
garage door opener or device that
lacks safety stop and reverse fea-
tures as required by federal safety
standards.
This includes any garage door
that cannot detect an interfering
object. A door or device without
these features increases the risk
of death or serious injury.
■When operating or program-
ming HomeLink®
Never allow a child to operate or
play with the HomeLink® buttons.

4026-1. Maintenance and care
WARNING
■Precaution regarding the rear
bumper with Blind Spot Moni-
tor (if equipped)
If the paint of the rear bumper is
chipped or scratched, the system
may malfunction. If this occurs,
consult your Toyota dealer.
NOTICE
■To prevent paint deterioration
and corrosion on the body
and components (aluminum
wheels, etc.)
●Wash the vehicle immediately in
the following cases:
• After driving near the sea coast
• After driving on salted roads
• If coal tar or tre e sap is present
on the paint surface
• If dead insects, insect droppings or bird droppings are present on
the paint surface
• After driving in an area contami- nated with soot, oily smoke,
mine dust, iron powder or chem-
ical substances
• If the vehicle becomes heavily soiled with dust or mud
• If liquids such as benzene and gasoline are spilled on the paint
surface
●If the paint is chipped or
scratched, have it repaired
immediately.
●To prevent the wheels from cor-
roding, remove any dirt and
store in a place with low humid-
ity when storing the wheels.
■Cleaning the exterior lights
●Wash carefully. Do not use
organic substances or scrub
with a hard brush.
This may damage the surfaces
of the lights.
●Do not apply wax to the sur-
faces of the lights.
Wax may cause damage to the
lenses.
■When using an automatic car
wash (vehicles with rain-
sensing windshield wipers)
Set the wiper switch to off posi-
tion.
If the wiper switch is in “AUTO”,
the wipers may operate and the
wiper blades may be damaged.
■When using a high pressure
car wash
●When washing the vehicle, do
not let water from the high-pres-
sure washer directly hit the
camera or the area around the
camera. Due to the shock from
the high pressure water, it is
possible that the device may not
operate normally.
●Do not bring the nozzle tip close
to boots (rubber or resin manu-
factured cover), or connectors
or the following parts.
The parts may be damaged if
they come into contact with
high-pressure water.
• Traction re lated parts
• Steering parts
• Suspension parts
• Brake parts

4126-3. Do-it-yourself maintenance
Hybrid bat-
tery (traction
battery) air
intake vent
( P.443)• Vacuum cleaner,
etc,
• Phillips screw- driver
Light bulbs
( P.451)
• Bulb with same
number and watt-
age rating as origi-
nal
• Phillips-head screwdriver
• Flathead screw- driver
• Wrench
Radiator and
condenser
(  P.420)

Tire inflation
pressure
( P.438)• Tire pressure
gauge
• Compressed air source
Washer fluid
( P.421)
• Water or washer
fluid containing
antifreeze (for win-
ter use)
• Funnel (used only for adding water or
washer fluid)
WARNING
The engine compartment contains
many mechanisms and fluids that
may move suddenly, become hot,
or become electrically energized.
To avoid death or serious injury,
observe the following precautions.
ItemsParts and tools■When working on the engine
compartment
●Make sure that “IGNITION ON”
on the multi-information display
and the “READY” indicator are
both off.
●Keep hands, clothing and tools
away from the moving fan.
●Be careful not to touch the
engine, power control unit, radi-
ator, exhaust manifold, etc. right
after driving as they may be hot.
Oil and other fluids may also be
hot.
●Do not leave anything that may
burn easily, such as paper and
rags, in the engine compart-
ment.
●Do not smoke, cause sparks or
expose an open flame to fuel or
the battery. Fuel and battery
fumes are flammable.
●Be extremely cautious when
working on the battery. It con-
tains poisonous and corrosive
sulfuric acid.
■When working near the elec-
tric cooling fan or radiator
grille
Be sure the power switch is OFF.
With the power switch in ON, the
electric cooling fa n may automati-
cally start to run if the air condi-
tioning is on and/or the coolant
temperature is high. ( P.420)
■Safety glasses
Wear safety gla sses to prevent
flying or falling material, fluid
spray, etc., from getting in your
eyes.

4216-3. Do-it-yourself maintenance
6
Maintenance and care
J1703 brake fluid
FMVSS No.116 DOT 4 or SAE
J1704 brake fluid
Item
Clean funnel
■Brake fluid can absorb moisture
from the air
Excess moisture in the brake fluid
can cause a dangerous loss of brak-
ing efficiency. Use only newly
opened brake fluid.
If any washer does not work or
“Windshield Washer Fluid Low”
is shown on the multi-informa-
tion display, the washer tank
may be empty. Add washer
fluid.
WARNING
■When filling the reservoir
Take care as brake fluid can harm
your hands and eyes and damage
painted surfaces.
If fluid gets on your hands or in
your eyes, flush th e affected area
with clean water immediately.
If you still experien ce discomfort,
see a doctor.
NOTICE
■If the fluid level is low or high
It is normal for the brake fluid level
to go down slightly as the brake
pads wear out or when the fluid
level in the accumulator is high.
If the reservoir needs frequent
refilling, there may be a serious
problem.
Adding the washer fluid
WARNING
■When adding washer fluid
Do not add washer fluid when the
hybrid system is hot or operating
as washer fluid contains alcohol
and may catch fire if spilled on the
hybrid system, etc.
NOTICE
■Do not use any fluid other
than washer fluid
Do not use soapy water or engine
antifreeze instead of washer fluid.
Doing so may cause streaking on
the vehicle’s painted surfaces, as
well as damaging the pump lead-
ing to problems of the washer
fluid not spraying.
■Diluting washer fluid
Dilute washer fluid with water as
necessary.
Refer to the freezing tempera-
tures listed on the label of the
washer fluid bottle.