2021 TOYOTA SIENNA HYBRID seats

671-2. Child safety
1
For safety and security
WARNING
■When installing a child
restraint system
Observe the following precau-
tions.
Failure to do so m ay result in
death or serious injury.
●Do not allow children to play
with the seat belt. If the seat belt
becomes twisted around a
child’s neck, it may lead to
choking or other serious injuries
that could result in death.
If this occurs and the buckle
cannot be unfastened, scissors
should be used to cut the belt.
●Ensure that the belt and plate
are securely locked and the
seat belt is not twisted.
●Shake the child restraint system
left and right, and forward and
backward to ensure that it has
been securely installed.
●After securing a child restraint
system, never adjust the seat.
●When a booster seat is
installed, always ensure that the
shoulder belt is positioned
across the center of the child’s
shoulder. The belt should be
kept away from the child’s neck,
but not so that it could fall off the
child’s shoulder.
●Follow all installation instruc-
tions provided by the child
restraint system manufacturer.
●When securing some types of
child restraint systems 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 s eat 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. Fa ilure to do so
may result in death or serious
injury.
●When installing a child restraint
system in the ce nter rear seat,
adjust both seatbacks at the
same angle. Otherwise, the
child restraint system cannot be
securely restrained and this
may cause death or serious
injuries in the event of sudden
braking, sudden swerving or an
accident.
■When installing a booster
seat
To prevent the belt from going
into ALR lock mode, do not fully
extend the shoulder belt. ALR
mode causes the belt to tighten
only. This could cause injury or
discomfort to the child. ( P.39)
■Do not use a seat belt
extender
If a seat belt extender is used
when installing a child restraint
system, the seat belt will not
securely hold the child restraint
system, which could cause death
or serious injury to the child or
other passengers in the event of
sudden braking, sudden swerv-
ing or an accident.

681-2. Child safety
■Child restraint LATCH
anchors
LATCH anchors are provided for
the rear seats.
Second seats (8-passenger
models)
Second seats (7-passenger
models)
Third seats
■When installing in the sec-
ond seats and third seats
Install the child restraint system
in accordance to the operation
manual enclosed with the child
restraint system.
Second seats
1 Fold the seatback while pull-
ing the lever. Return the
seatback and secure it at the
1st lock position (most
upright position). Adjust the
seatback to the 6th lock posi-
tion.
If there is a gap between the child
restraint system and the seatback,
adjust the seatback angle until
good contact is achieved.
1st lock position
6th lock position
Third seats
1 Fold the seatback while pull-
ing the strap. Return the
seatback and secure it at the
1st lock position (most
upright position). Adjust the
seatback to the 11th lock
position.
If there is a gap between the child
restraint system and the seatback,
Child restraint system
fixed with a child restraint
LATCH anchor
A
B

701-2. Child safety
the presence of a lower con-
nector system.
4 If the child restraint has a top
tether strap, follow the child
restraint manufacturer’s
operation manual regarding
the installation, using the top
tether strap to latch onto the
top tether strap anchor.
( P.71)
5 After installing the child
restraint system, rock it back
and forth to ensure that it is
installed securely. ( P.67)
■When installing a child restraint
system in the third seats
Use outboard seats LATCH anchors
and or and . can
be used with when installing in
the third center seat. Do not use
LATCH anchors , and
simultaneously.
■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.
ABDEC
D
CDE
WARNING
■When installing a child
restraint system
Observe the following precau-
tions.
Failure to do so may result in
death or serious injury.
●When using the LATCH
anchors, be sure that there are
no foreign objects around the
anchors and that the seat belt is
not caught behind the child
restraint system.
●Follow all installation instruc-
tions provided by the child
restraint system manufacturer.
●Never attach two c hild restraint
system attachments to the
same anchor. In a collision, one
anchor may not be strong
enough to hold two child
restraint system attachments
and may break.
If the LATCH anchors are
already in use, use the seat belt
to install a child restraint sys-
tem.

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

741-2. Child safety
WARNING
■When installing a child
restraint system
Observe the following precau-
tions.
Failure to do so m ay result in
death or serious injury.
●Firmly attach t he top tether
strap and make sure that the
belt is not twisted.
●Do not attach the top tether
strap to anything other than the
anchor bracket.
●After securing a child restraint
system, never adjust the seat.
●Follow all installation instruc-
tions provided by the child
restraint system manufacturer.
●Second seats and third center
seat: When installing the child
restraint system with the head
restraint being raised, after the
head restraint has been raised
and then the anchor bracket has
been fixed, do not lower the
head restraint.

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