remove seats TOYOTA SIENNA HYBRID 2021 Owners Manual (in English)

491-1. For safe use
1
For safety and security
WARNING
●Do not hang coat hangers or
other hard objects on the coat
hooks. All of these items could
become projectiles and may
cause death or serious injury,
should the SRS curtain shield
airbags deploy.
●If a vinyl cover is put on the area
where the SRS knee airbag will
deploy, be sure to remove it.
●Do not use seat accessories
which cover the parts where the
SRS side airbags and SRS seat
cushion airbag inflate as they
may interfere with inflation of
the SRS airbags. Such acces-
sories may prevent the SRS
side airbags and SRS seat
cushion airbag from activating
correctly, disable the system or
cause the SRS side airbags and
SRS seat cushion airbag to
inflate accidentally, resulting in
death or serious injury.
●Do not strike or apply significant
levels of force to the area of the
SRS airbag components or the
front doors.
Doing so can cause the SRS
airbags to malfunction.
●Do not touch any of the compo-
nent parts immediately after the
SRS airbags have deployed
(inflated) as they may be hot.
●If breathing becomes difficult
after the SRS airbags have
deployed, open a door or side
window to allow fresh air in, or
leave the vehicle if it is safe to
do so. Wash off any residue as
soon as possible to prevent skin
irritation.
●If the areas where the SRS air-
bags are stored, such as the
steering wheel pad and front
and rear pillar garnishes, are
damaged or cracked, have
them replaced by your Toyota
dealer.
●Do not place anything, such as
a cushion, on the front passen-
ger’s seat. Doing so will
disperse the passenger’s
weight, which prevents the sen-
sor from detecting the passen-
ger’s weight properly. As a
result, the SRS front airbags for
the front passenger may not
deploy in the event of a colli-
sion.
■Modification and disposal of
SRS airbag system compo-
nents
Do not dispose of your vehicle or
perform any of the following modi-
fications without consulting your
Toyota dealer. The SRS airbags
may malfunction or deploy
(inflate) accidentally, causing
death or serious injury.
●Installation, re moval, disassem-
bly and repair of the SRS air-
bags
●Repairs, modific ations, removal
or replacement of the steering
wheel, instrument panel, dash-
board, seats or seat upholstery,
front, side and rear pillars, roof
side rails, front door panels,
front door trims or front door
speakers
●Modifications to the front door
panel (such as making a hole in
it)
●Repairs or modifications of the
front fender, fr ont bumper, or
side of the occupant compart-
ment

521-1. For safe use
WARNING
●Make sure the “AIR BAG OFF”
indicator light is not illuminated
when using the seat belt
extender for the front passenger
seat. If the “AIR BAG OFF” indi-
cator light is illuminated, discon-
nect the extender tongue from
the seat belt buckle, and recon-
nect the seat belt. Reconnect
the seat belt extender after
making sure the “AIR BAG ON”
indicator light is illuminated. If
you use the seat belt extender
while the “AIR BAG OFF” indi-
cator light is illuminated, the
SRS airbags for the front pas-
senger will not activate, which
could cause death or serious
injury in the ev ent of a collision.
●Do not apply a heavy load to the
front passenger seat or equip-
ment (e.g. seatback pocket).
●Do not put weight on the front
passenger seat by putting your
hands or feet on the front pas-
senger seat seatback from the
rear passenger seat.
●Do not let a rea r passenger lift
the front passenger seat with
their feet or press on the seat-
back with their legs.
●Do not put objects under the
front passenger seat.
●Do not recline t he front passen-
ger seatback so far that it
touches a rear seat. This may
cause the “AIR BAG OFF” indi-
cator light to be illuminated,
which indicates that the SRS
airbags for the front passenger
will not activate in the event of a
severe accident. If the seatback
touches the rear seat, return the
seatback to a position where it
does not touch the rear seat.
Keep the front passenger seat-
back as upright as possible
when the vehicle is moving.
Reclining the seatback exces-
sively may lessen the effective-
ness of the seat belt system.
●If an adult sits i n the front pas-
senger seat, the “AIR BAG ON”
indicator light i s illuminated. If
the “AIR BAG OFF” indicator is
illuminated, ask the passenger
to sit up straight, well back in
the seat, feet on the floor, and
with the seat belt worn correctly.
If the “AIR BAG OFF” indicator
still remains illumi nated, either
ask the passenger to move to
the rear seat, or if that is not
possible, move the front pas-
senger seat fully rearward.
●When it is unavoidable to install
a forward-facing child restraint
system on the front passenger
seat, install the child restraint
system on the front passenger
seat in the proper order.
(  P.61)
●Do not modify or remove the
front seats.
●Do not kick the front passenger
seat or subject it to severe
impact. Otherwise, the SRS
warning light m ay come on to
indicate a malfu nction of the
front passenger occupant clas-
sification system. In this case,
contact your Toyota dealer
immediately.

711-2. Child safety
1
For safety and security
■Anchor brackets (for top
tether strap)
Use anchor brackets when fix-
ing the top tether strap. Anchor brackets are provided
for the following seats:
Second seats (8-passenger
models)
Anchor brackets
Top tether strap
Second seats (7-passenger
models)Anchor bracket
Top tether strap
Third seats
WARNING
●Third seats: Never attach two
child restraint systems to the
center seat and left-hand side
outboard seat at the same time.
Child restraint systems may
interfere with each other and
may not be possible to properly
install the child restraint sys-
tems in positions.
●8-passenger models: Never
attach child restraint system to
the second center seat strikers,
which are exposed when sec-
ond center seat is removed.
When attaching child restraint
system to the second center
seat, ensure the second center
seat is securely installed and
attach child restraint system to
the LATCH anchors of the seat.
●When securing some types of
child restraint s ystems in rear
seats, it may not be possible to
properly use the seat belts in
positions next to the child
restraint without interfering with
it or affecting seat belt effective-
ness. Be sure your seat belt fits
snugly across your shoulder
and low on your hips. If it does
not, or if it interferes with the
child restraint, move to a differ-
ent position. Failure to do so
may result in death or serious
injury.
●If the seat is adjusted, reconfirm
the security of the child restraint
system.
Using an anchor bracket
(for top tether strap)
A
B
A
B

721-2. Child safety
Anchor bracket
Top tether strap
■Fixing the top tether strap
to the anchor bracket (sec-
ond seats)
Install the child restraint system
in accordance to the operation
manual enclosed with the child
restraint system.
Outboard seats
1 If the head restraint interferes
with your child restraint sys-
tem, and the head restraint
can be removed, remove the
head restraint. Otherwise,
put the head restraint in the
upper most position.
( P.182)
2 Latch the hook onto the
anchor bracket and tighten
the top tether strap.
Make sure the top tether strap is
securely latched. ( P.67)
When installing the child restraint
system with the head restraint
being raised, be sure to have the
top tether strap pass underneath
the head restraint for the single
tether strap. For V-shaped top
tether strap, the top tether strap can
pass on both sides of the head
restraint, without passing under- neath the head restraint.
Hook
Top tether strap
Center seat
1 If the head restraint interferes
with your child restraint sys-
tem, and the head restraint
can be removed, remove the
head restraint. Otherwise,
put the head restraint in the
upper most position.
( P.182)
2 Latch the hook onto the
anchor bracket and tighten
the top tether strap.
Make sure the top tether strap is
securely latched. ( P.67)
When installing the child restraint
system with the head restraint
being raised, be sure to have the
top tether strap pass underneath
the head restraint. Do not install
child restraints with V-shaped top
tether strap.
A
B
A
B

731-2. Child safety
1
For safety and security
Hook
Top tether strap
■Fixing the top tether strap
to the anchor bracket (third
seats)
Install the child restraint system
in accordance to the operation
manual enclosed with the child
restraint system.
Outboard seats
Latch the hook onto the anchor
bracket and tighten the top
tether strap.
Make sure the top tether strap is
securely latched. ( P.67)
Hook
Top tether strap
Center seat
1 If the head restraint interferes
with your child restraint sys- tem, and the head restraint
can be removed, remove the
head restraint. Otherwise,
put the head restraint in the
upper most position.
(
P.182)
2 Latch the hook onto the
anchor bracket and tighten
the top tether strap.
Make sure the top tether strap is
securely latched. ( P.67)
When installing the child restraint
system with the head restraint
being raised, be sure to have the
tether strap pass underneath the
head restraint. Do not install child
restraints with V-shaped tether
strap.
Hook
Top tether strap
■Laws and regulations pertain-
ing to anchors
The LATCH system conforms to
FMVSS225 or CMVSS210.2.
Child restraint systems conforming
to FMVSS213 or CMVSS213 speci-
fications can be used.
This vehicle is designed to conform
to SAE J1819.
A
B
A
B
A
B

811-4. Hybrid system
1
For safety and security
hybrid system, contact your Toyota
dealer.
■Charging the 12-volt battery
 P.508
■After the 12-volt battery has dis-
charged or when the terminal
has been removed and installed
during exchange, etc.
The gasoline engine may not stop
even if the vehicle is being driven by
the hybrid battery (traction battery).
If this continues for a few days, con-
tact your To yota dealer.
■Sounds and vibrations specific
to a hybrid vehicle
There may be no engine sound or
vibration even though the vehicle is
able to move with the “READY” indi-
cator is illuminate d. For safety,
make sure to shift the shift lever to P
and apply the parking brake when
parked.
The following sounds or vibrations
may occur when the hybrid system
is operating and are not a malfunc-
tion:
●Motor sounds may be heard from
the engine compartment.
●Sounds may be heard from the
hybrid battery (traction battery)
under the front seats when the
hybrid system starts or stops.
●Relay operating sounds such as a
snap or soft clank will be emitted
from the hybrid battery (traction
battery), under the front seats,
when the hybrid system is started
or stopped.
●Sounds from the hybrid system
may be heard when the back door
is open.
●Sounds may be heard from the
transmission when the gasoline
engine starts or stops, when driv-
ing at low speeds, or during idling.
●Engine sounds may be heard
when accelerating sharply.
●Sounds may be heard due to regenerative braking when the
brake pedal is depressed or as
the accelerator pedal is released.
●Vibration may be felt when the
gasoline engine starts or stops.
●Cooling fan sounds may be heard
from the air intake vent under the
front seat.
■Maintenance, repair, recycling,
and disposal
Contact your Toyota dealer regard-
ing maintenance, repair, recycling
and disposal. Do n ot dispose of the
vehicle yourself.
When driving with the gasoline
engine stopped, a sound, which
changes in accordance with the
driving speed, will be played in
order to warn people nearby of
the vehicle’s approach. The
sound will stop when the vehicle
speed exceeds approximately
22 mph (35 km/h).
■Acoustic Vehicle Alerting Sys-
tem
In the following cases, the Acoustic
Vehicle Alerting System may be dif-
ficult for surrounding people to hear.
●In very noisy areas
●In the wind or the rain
■If “Acoustic Vehicle Alerting
System Malfunction Visit Your
Dealer” is displayed on the
multi-information display
The system may be malfunctioning.
Have the vehicle inspected by your
Toyota dealer.
Acoustic Vehicle Alerting
System

851-4. Hybrid system
1
For safety and security
There are air intake vents under
the front seats for the purpose of
cooling the hybrid battery (trac-
tion battery). If the vent
becomes blocked, the hybrid
battery (traction battery) may
overheat, leading to a reduction
in hybrid battery (traction bat-
tery) output.
WARNING
●If a fire occurs in the hybrid
vehicle, leave the vehicle as
soon as possible. Never use a
fire extinguisher that is not
meant for electric fires. Using
even a small amount of water
may be dangerous.
●If your vehicle needs to be
towed, do so with four wheels
raised. If the wheels connected
to the electric motor (traction
motor) are on the ground when
towing, the motor may continue
to generate electricity. This may
cause a fire. ( P.462)
●Carefully inspect the ground
under the vehicle. If you find
that liquid has leaked onto the
ground, the fuel system may
have been damaged. Leave the
vehicle as soon as possible.
■Hybrid battery (traction bat-
tery)
●Never resell, hand over or mod-
ify the hybrid battery. To prevent
accidents, hybrid batteries that
have been removed from a dis-
posed vehicle are collected
through Toyota dealer. Do not
dispose of the battery yourself.
Unless the battery is properly col-
lected, the follo wing may occur,
resulting in dea th or serious
injury:
• The hybrid battery may be ille- gally disposed of or dumped,
and it is hazardous to the envi-
ronment or someone may touch
a high voltage part, resulting in
an electric shock.
• The hybrid battery is intended to be used exclusively with your
hybrid vehicle. If the hybrid bat-
tery is used out side of your
vehicle or modified in any way,
accidents such as electric
shock, heat generation, smoke
generation, an explosion and
electrolyte leakage may occur.
When reselling or handing over
your vehicle, the possibility of an
accident is extremely high
because the person receiving the
vehicle may not be aware of these
dangers.
●If your vehicle is disposed of
without the hybrid battery hav-
ing been removed, there is a
danger of serious electric shock
if high voltage parts, cables and
their connectors are touched. In
the event that your vehicle must
be disposed of, the hybrid bat-
tery must be disposed of by
your Toyota dealer or a qualified
service shop. If the hybrid bat-
tery is not disposed of properly,
it may cause electric shock that
can result in dea th or serious
injury.
Hybrid battery (traction
battery) air intake vents

1743-3. Adjusting the seats
2Pull the lock release strap in
front of the cushion to
release the rear latch.
3 Pull the lock release strap
under the seat to remove the
seat.
Retract the cushion leg.
4After detaching the second
center seat, remove it from
the vehicle or store it
securely in the luggage com-
partment.
1 Latch the buckles onto the
anchors.
The cushion leg opens by itself.
2Unfold the seatback and lock
it.
Make sure the seat is locked in
place by trying to shake the seat-
back and lift up the seat cushion.
■Before folding the third
seats
1 Fold the outside head
restraints and lower the cen-
ter head restraint to the low-
Installing the second cen-
ter seat (8-passenger
models)
Folding down the third
seats

1753-3. Adjusting the seats
3
Before driving
est position (P.182) and
stow the seat belt buckles.
2 Stow the center seat belt.
( P.38)
■Folding down the third seat-
backs
Pull the “TO RECLINE” strap
and fold down the seatback.
■Returning the third seat-
backs
Pull the “TO RECLINE” strap,
and raise the seatback and the
outside head restraints. Before stowing or returning third
seat, remove any items from the
floor area to prevent interfer-
ence with moving parts.
■Before stowing the third
seats
1 Lower the center head
restraint to the lowest posi-
tion ( P.182) and stow the
seat belt buckles.
2 Stow the center seat belt.
( P.38)
■Stowing the third seats
1 Pull the handle to move the
seat rearward. Then push the
seat down.
The outside head r estraints are
Stowing the third seats

1773-3. Adjusting the seats
3
Before driving
WARNING
●Do not allow anyone to sit on a
folded seatback or in the lug-
gage compartment while driv-
ing.
●Do not allow child ren to enter
the luggage compartment.
●Be careful not to get any part of
your body pinched by a seat.
■After returning the rear seat-
backs or installing seats
Observe the following precau-
tions. Failure to do so may result
in death or serious injury.
●Make sure the seatback is
securely locked by pushing it
forward and rearward on the
top.
●Check that the seat belts are
not twisted or caught in the
seatback. If the seat belt gets
caught between the seatback’s
securing hook and latch, the
seat belt may be damaged.
●Make sure the seat is locked in
place by trying to shake the
seatback and lift up the seat
cushion.
■After removi ng the second
center seat (8-passenger
models)
●Remove the second center seat
from the vehicle or store it
securely in the luggage com-
partment.
●Do not sit on or place anything
on a seat that has been
removed from the vehicle.
■Stowing the third seats
●Make sure that the seat path is
clear before moving the seat.
Otherwise, injury may result
from contact with, or by being
pinched by parts of the seat.
●Do not sit on the third seat when
it is in the stowed position with
the seatback upright.
NOTICE
■To prevent damage to the
seat
●Avoid putting heavy loads on a
folded seat that is being used as
a temporary table.
●Do not sit on or put heavy loads
on the second center seat that
has been removed from the
vehicle. The metal tips of the
seat leg may be damaged, pre-
venting reinstallation of the
seat.
●The second center seat must be
reinstalled in its original position
(8-passenger models). If it is
installed in the w rong position,
the seat locks or bezels will be
damaged.
●Make sure that the path the seat
will move through is clear before
stowing or returning the third
seat.
●8-passenger models: Be sure to
raise the stowed second center
seat above the outer trim, when
removing from the storage box
of the luggage room.