fuel pressure TOYOTA SIENNA HYBRID 2021 Owners Manual (in English)

SIENNA_OM_OM08031U_(U)
1
2
3
4
5
6
7
8
9
Pictorial indexSearch by illustration
For safety
and securityMake sure to read through them
(Main topics: Child seat, theft deterrent system)
Vehicle status
information and
indicatorsReading driving-related information
(Main topics: Meters, multi-information display)
Before driving
Opening and closing the doors and windows,
adjustment before driving
(Main topics: Keys, doors, seats, power windows)
Driving
Operations and advice which are necessary for
driving
(Main topics: Starting hybrid system, refueling)
Interior featuresUsage of the interior features
(Main topics: Air conditioner, storage features)
Maintenance
and careCaring for your vehicle and maintenance
procedures
(Main topics: Interior and exterior, light bulbs)
When trouble
arisesWhat to do in case of malfunction and emergency
(Main topics: 12-volt battery discharge, flat tire)
Vehicle
specificationsVehicle specifications, customizable features
(Main topics: Fuel, oil, tire inflation pressure)
For ownersReporting safety defects for U.S. owners, and seat
belt and SRS airbag instructions for Canadian
owners
IndexSearch by symptom
Search alphabetically

4TABLE OF CONTENTS
5-3. Using the storage featuresList of storage features . 366
Luggage compartment fea- tures ............................ 372
5-4. Using the other interior fea- tures
Other interior features ... 374
Garage door opener...... 392
6-1. Maintenance and care Cleaning and protecting the vehicle exterior ............ 400
Cleaning and protecting the vehicle interior ............. 403
6-2. Maintenance Maintenance requirements.................................... 406
General maintenance.... 407
Emission inspection and maintenance (I/M) programs.................................... 410
6-3. Do-it-yourself maintenance Do-it-yourself service precau-tions............................. 411
Hood ............................. 413
Positioning a floor jack .. 415
Engine compartment ..... 416
12-volt battery ............... 422
Tires .............................. 424
Tire inflation pressure ... 438
Wheels ......... .................440
Air conditioning filter ...... 441
Cleaning the hybrid battery (traction battery) air intake
vents and filters ........... 443Electronic key battery ....
447
Checking and replacing fuses .................................... 449
Light bulbs ..................... 451
7-1. Essential information Emergency flashers....... 458
If your vehicle has to be stopped in an emergency.................................... 459
If the vehicle is trapped in ris- ing water ...................... 460
7-2. Steps to take in an emer- gency
If your vehicle needs to be
towed ........................... 462
If you think something is wrong........................... 465
If a warning light turns on or a warning buzzer sounds 466
If a warning message is dis- played .......................... 477
If you have a flat tire (vehicles without spare tire) ........ 481
If you have a flat tire (vehicles with spare tire) ............. 491
If the hybrid system will not start ............................. 501
If you lose your keys...... 502
If the fuel filler door cannot be opened ......... ...............503
If the electronic key does not operate properly .......... 50
4
If the 12-
volt battery is dis-
charged ....................... 506
If your vehicle overheats 511
6Maintenance and care
7When trouble arises

15Pictorial index
Outside rear view mirrors .................................................P.198
Adjusting the mirror angle ....................................................P.198
Folding the mirrors ...............................................................P.199
Driving position memory
*.....................................................P.178
Defogging the mirrors
*.........................................................P.350
Windshield wipers .............................................. ...............P.254
Precautions against winter season .............................. ........P.343
To prevent freezing (windshield wiper de-icer)
*...................P.350
Precautions against car wash
(Rain-sensing windshield wipers)
*.......................................P.401
Fuel filler door ............................................... .....................P.259
Refueling method ............................................... ..................P.259
Fuel type/fuel tan k capacity .................................................P.520
Tires ....................................................................................P.424
Tire size/inflation pressure ................................... ................P.525
Winter tires/tire chain ........................................ ...................P.343
Checking/rotation/tire pressur e warning system ..................P.424
Coping with flat tires......................................... ............P.481, 491
Hood ....................................................................................P.413
Opening ........................................................ .......................P.413
Engine oil ..................................................... ........................P.521
Coping with overheat ........................................... ................P.511
Warning messages ..............................................................P.477
Headlights/side marke r lights/parking lights ..................P.248
Turn signal lights ...............................................................P.242
Headlights/daytime running lights .............................. .....P.248
Fog lights
*............................................................... ............P.254
Light bulbs of the exterior lights for driving
(Replacing method: P.451, Watts: P.526)
D
E
F
G
H
I
J
K

17Pictorial index
Opening/closing the rear side windows ...............................P.201
Warning messages ..............................................................P.477
Back door ...................................................... .....................P.150
Locking/unlocking ................................................................P.151
Opening from inside the cabin
*............................................P.154
Opening from outside........................................... ........P.152, 153
Warning messages ..............................................................P.477
Outside rear view mirrors .................................................P.198
Adjusting the mirror angle ..................................... ...............P.198
Folding the mirrors ...............................................................P.199
Driving position memory
*.....................................................P.178
Defogging the mirrors
*.........................................................P.350
Windshield wipers .............................................. ...............P.254
Precautions against winter season .............................. ........P.343
To prevent freezing (windshield wiper de-icer)
*...................P.350
Precautions against car wash
(Rain-sensing windshield wipers)
*.......................................P.401
Fuel filler door ............................................... .....................P.259
Refueling method ............................................... ..................P.259
Fuel type/fuel tan k capacity .................................................P.520
Tires ....................................................................................P.424
Tire size/inflation pressure ................................... ................P.525
Winter tires/tire chain ........................................ ...................P.343
Checking/rotation/tire pressur e warning system ..................P.424
Coping with flat tires......................................... ............P.481, 491
Hood ....................................................................................P.413
Opening ........................................................ .......................P.413
Engine oil ..................................................... ........................P.521
Coping with overheat ........................................... ................P.511
Warning messages ..............................................................P.477
C
D
E
F
G
H

19Pictorial index
Opening/closing the front side windows...............................P.201
Locking/unlocking by using the mechanical key ..........P.133, 504
Warning messages ..............................................................P.477
Sliding doors .................................................. ....................P.137
Locking/unlocking ................................................................P.138
Opening/closing the sliding door ............................... ...........P.139
Opening/closing the rear si de windows ...............................P.201
Warning messages ..............................................................P.477
Back door ...................................................... .....................P.150
Locking/unlocking ................................................................P.151
Opening from inside the cabin
*............................................P.154
Opening from outside........................................... ........P.152, 153
Warning messages ..............................................................P.477
Outside rear view mirrors .................................................P.198
Adjusting the mirror angle ..................................... ...............P.198
Folding the mirrors ...............................................................P.199
Driving position memory
*.....................................................P.178
Defogging the mirrors
*.........................................................P.350
Windshield wipers .............................................. ...............P.254
Precautions against winter season .............................. ........P.343
To prevent freezing (windshield wiper de-icer)
*...................P.350
Precautions against car wash
(Rain-sensing windshield wipers)
*.......................................P.401
Fuel filler door ............................................... .....................P.259
Refueling method ............................................... ..................P.259
Fuel type/fuel tan k capacity .................................................P.520
Tires ....................................................................................P.424
Tire size/inflation pressure ................................... ................P.525
Winter tires/tire chain ........................................ ...................P.343
Checking/rotation/tire pressur e warning system ..................P.424
B
C
D
E
F
G

942-1. Instrument cluster
*1: These lights turn on when the power switch is turned to ON to
indicate that a system check is
being performed. They will turn
off after the hybr id system is on,
or after a few seconds. There
may be a malfunction in a sys-
tem if the light does not come on,
or turn off. Have the vehicle
inspected by your Toyota dealer.
*2: This light illuminates on the multi-informatio n display with a
message.
*3: Intuitive parking assist OFF indi- cator turns on when the power
switch is turned to ON while the
Intuitive parking assist function is
on. It will turn off after a few sec-
onds.
*4: This light illumi nates on the cen-
ter panel.
(U.S.A.)
(Flashes)
Parking brake indica-
tor ( P.472)
(Canada)
(Flashes)
Parking brake indica-
tor ( P.472)
Tire pressure warning
light
*1 (  P.472)
Low fuel level warn-
ing light ( P.472)
Seat belt reminder
light ( P.473)
Rear passengers’ seat
belt reminder light
*4
(  P.473)
WARNING
■If a safety system warning
light does not come on
Should a safety system light such
as the ABS and SRS warning light
not come on when you start the
hybrid system, this could mean
that these system s are not avail-
able to help protect you in an acci-
dent, which could result in death
or serious injury. Have the vehicle
inspected by your Toyota dealer
immediately if this occurs.

1162-1. Instrument cluster
ID code set, contact your Toyota
dealer.
• “Setting UNIT”
Select to change the units of the
tire pressure displayed.
 “Oil Maintenance” ( P.418)
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 the 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/d isable 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”
Select to enable/d isable the follow-
ing pop-up displays, which may
appear in some situations.
• TbT Navigation (if equipped)
• Telephone (if equipped)
• Audio operation
• Volume operation
• Voice control (if equipped)
• Brightness
 “Multi-Information Display
OFF”
A blank screen is displayed.
“Default Settings”

2594-4. Refueling
4
Driving
4-4.Refueling
Close all the doors and win-
dows, and turn the power
switch to OFF.
 Confirm the type of fuel.
■Fuel types
 P.528
■Fuel tank opening for unleaded
gasoline
To help prevent incorrect fueling,
your vehicle has a fuel tank opening
that only accommodates the spe-
cial nozzle on unle aded fuel pumps.
Opening the fuel tank
cap
The fuel tank of your vehicle
has a special structure,
which requires a reduction
in fuel tank pressure before
refueling. After the opener
switch has been pressed, it
will take several seconds
until the vehicle is ready for
refueling.
Before refueling the vehi-
cle
WARNING
■When refueling the vehicle
Observe the following precautions
while refueling the vehicle. Failure
to do so may result in death or
serious injury.
●After exiting the vehicle and
before opening the fuel door,
touch an unpainted metal sur-
face to discharge any static
electricity. It is important to dis-
charge static electricity before
refueling because sparks result-
ing from static electricity can
cause fuel vapors to ignite while
refueling.
●Always hold the grips on the
fuel tank cap and turn it slowly
to remove it.
A whooshing sound may be
heard when the f uel tank cap is
loosened. Wait until the sound
cannot be heard before fully
removing the cap. In hot
weather, pressurized fuel may
spray out of the filler neck and
cause injury.
●Do not allow anyone that has
not discharged static electricity
from their body to come close to
an open fuel tank.
●Do not inhale vaporized fuel.
Fuel contains substances that
are harmful if inhaled.
●Do not smoke while refueling
the vehicle.
Doing so may cause the fuel to
ignite and cause a fire.
●Do not return to the vehicle or
touch any person or object that
is statically charged. This may
cause static electricity to build
up, resulting in a possible igni-
tion hazard.

3424-6. Driving tips
reports before leaving and avoid
delays as much as possible.
When driving in a traffic jam,
gently release the brake pedal
to allow the vehicle to move for-
ward slightly while avoiding
overuse of the accelerator
pedal. Doing so can help control
excessive gasoline consump-
tion.
Control and maintain the vehicle
at a constant speed. Before
stopping at a toll booth or simi-
lar, allow plenty of time to
release the accelerator and gen-
tly apply the brakes. A greater
amount of electrical energy can
be regenerated when slowing
down.
Use the air conditioning only
when necessary. Doing so can
help reduce excessive gasoline
consumption.
In summer: When the ambient
temperature is high, use the
recirculated air mode. Doing so
will help to reduce the burden on
the air conditioning system and
reduce fuel consumption as
well.
In winter: Because the gasoline
engine will not automatically cut
out until it and the interior of the
vehicle are warm, it will con-sume fuel. Also, fuel consump-
tion can be improved by
avoiding overuse of the heater.
Make sure to check the tire infla-
tion pressure frequently.
Improper tire inflation pressure
can cause poor fuel economy.
Also, as snow tires can cause
large amounts of friction, their
use on dry roads can lead to
poor fuel economy. Use tires
that are appropriate for the sea-
son.
Carrying heavy luggage will lead
to poor fuel economy. Avoid car-
rying unnecessary luggage.
Installing a large roof rack will
also cause poor fuel economy.
Since the gasoline engine starts
up and cuts out automatically
when cold, warming up the
engine is unnecessary. More-
over, frequently driving short
distances will cause the engine
to repeatedly warm up, which
can lead to excess fuel con-
sumption.
Highway driving
Air conditioning
Checking tire inflation
pressure
Luggage
Warming up before driv-
ing

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.