2021 TOYOTA SIENNA HYBRID child lock

2TABLE OF CONTENTS
For your information...................6
Reading this manual ................ 11
How to search .......................... 12
Pictorial index .......................... 14
1-1. For safe use Before driving ................... 32
For safe driving ................ 33
Seat belts ......................... 35
SRS airbags ..................... 41
Front passenger occupant classification system ...... 51
Exhaust gas precautions.. 56
1-2. Child safety Riding with children .......... 57
Child restraint systems..... 58
1-3. Emergency assistance Safety Connect ................ 75
1-4. Hybrid system Hybrid system features .... 79
Hybrid system precautions ....................................... 83
1-5. Theft deterrent system Immobilizer system .......... 88
Alarm................................ 89
2-1. Instrument cluster Warning lights and indicators....................................... 92
Gauges and meters (with 4.2- inch display) ................... 97Gauges and meters (with 7-
inch display) ................ 101
Multi-information display 104
Head-up display ............ 118
Energy monitor/ consumption
screen.......................... 122
3-1. Key information Keys .............................. 128
3-2. Opening, closing and lock- ing the doors
Front doors .................... 132
Sliding doors.................. 137
Back door ...................... 150
Smart key system .......... 164
3-3. Adjusting the seats Front seats .................... 169
Rear seats ..................... 171
Driving position memory 178
Head restraints .............. 182
3-4. Adjusting the steering wheel and mirrors
Steering wheel............... 185
Inside rear view mirror ... 186
Digital Rear-view Mirror . 188
Outside rear view mirrors .................................... 198
3-5. Opening, closing the win- dows and moon roof
Power windows ............. 201
Moon roof ...................... 204
1For safety and security
2
Vehicle status
information and
indicators
3Before driving

341-1. For safe use
Make sure that all occupants are
wearing their seat belts before
driving the vehicle. (P.36)
Use a child restraint system
appropriate for the child until the
child becomes large enough to properly wear the vehicle’s seat
belt. (
P.58)
Make sure that you can see
backward clearly by adjusting
the inside rear view mirror (if
equipped), Digital Rear-view
Mirror (if equipped) and outside
rear view mirrors properly.
( P.186, 188, 198)
WARNING
Observe the following precau-
tions.
Failure to do so m ay result in
death or serious injury.
●Do not adjust the position of the
driver’s seat while driving.
Doing so could cause the driver
to lose control of the vehicle.
●Do not place a cushion between
the driver or passenger and the
seatback. A cushion may pre-
vent correct pos ture from being
achieved, and reduce the effec-
tiveness of the seat belt and
head restraint.
●Do not place anything under the
front seats.
Objects placed under the front
seats may become jammed in
the seat tracks and stop the
seat from locking in place. This
may lead to an accident and the
adjustment mechanism may
also be damaged.
●Always observe the legal speed
limit when driving on public
roads.
●When driving over long dis-
tances, take regular breaks
before you start to feel tired.
Also, if you feel tired or sleepy
while driving, do not force your-
self to continue driving and take
a break immediately.
Correct use of the seat
belts
Adjusting the mirrors

361-1. For safe use
Extend the shoulder belt so
that it comes fully over the
shoulder, but does not come
into contact with the neck or
slide off the shoulder. 
Position the lap belt as low as
possible over the hips.
 Adjust the position of the
seatback.
Sit up straight and well back
in the seat.
 Do not twist the seat belt.
■Child seat belt usage
The seat belts of your vehicle were
principally designed for persons of
adult size.
●Use a child restraint system
appropriate for the child, until the
child becomes large enough to
properly wear the vehicle’s seat
belt. ( P.58)
●When the child becomes large
enough to properl y wear the vehi-
cle’s seat belt, follow the instruc-
tions regarding seat belt usage.
(  P.35)
■Seat belt extender
If your seat belts cannot be fastened
securely because they are not long
enough, a personalized seat belt
extender is available from your
Toyota dealer free of charge.
WARNING
●Inspect the seat belt system
periodically. Check for cuts,
fraying, and loose parts. Do not
use a damaged sea t belt until it
is replaced. Damaged seat belts
cannot protect an occupant
from death or serious injury.
●Ensure that the belt and plate
are locked and the belt is not
twisted.
If the seat belt does not function
correctly, immediately contact
your Toyota dealer.
●Replace the seat assembly,
including the belts, if your vehi-
cle has been involved in a seri-
ous accident, even if there is no
obvious damage.
●Do not attempt to install,
remove, modify, disassemble or
dispose of the seat belts. Have
any necessary repairs carried
out by your Toyota dealer. Inap-
propriate handling may lead to
incorrect operation.
Correct use of the seat
belts
WARNING
■Using a seat belt extender
Observe the following precautions
to reduce the risk of injury in the
event of sudden braking, sudden
swerving or an accident.
Failure to do so may cause death
or serious injury.

391-1. For safe use
1
For safety and security
■Automatic locking retractor
(ALR)
When a passenger’s shoulder belt is
completely extended and then
retracted even slightly, the belt is
locked in that position and cannot
be extended. This feature is used to
hold a child restraint system (CRS)
firmly. To free the belt again, fully
retract the belt and then pull the belt
out once more.
Push the seat belt shoulder
anchor up and down while
pressing the release button .
After releasing the button, make
sure the adjuster is locked in the
position by trying t o move it up and
down.
The pretensioners help the seat
belts to quickly restrain the
occupants by retracting the seat
belts when the vehicle is sub-
jected to certain types of severe
frontal or side collision or a vehi-
cle rollover.
The pretensioners do not activate
in the event of a minor frontal
impact, a minor s ide impact or a
rear impact.
WARNING
■When using the third center
seat belt
Do not use the third center seat
belt with either buckle released.
Fastening only one of the buckles
may result in death or serious
injury in case of sudden braking,
sudden swerving or an accident.
Adjusting the seat belt
shoulder anchor height
(front and second outside
seats [8-passenger mod-
els])
A
:$51,1*
■Adjustable shoulder anchor
Always make sure the shoulder
belt is positioned across the cen-
ter of your shoulder. The belt
should be kept away from your
neck, but not falling off your
shoulder. Failure to do so could
reduce the amount of protection in
an accident and cause death or
serious injuries in the event of a
sudden stop, sudden swerve or
accident.
Seat belt pretensioners
(front seats)

571-2. Child safety
1
For safety and security
1-2.Child safety
Riding with children
Observe the following pre-
cautions when children are
in the vehicle.
Use a child restraint system
appropriate for the child,
until the child becomes
large enough to properly
wear the vehicle’s seat belt.
It is recommended that chil-
dren sit in the rear seats to
avoid accidental contact
with the shift lever, wiper
switch, etc.
 Use the sliding door child-
protector lock or the window
lock switch to avoid children
opening the door while driv-
ing or operating the power
window accidentally.
( P.142, 203)
 Do not let small children
operate equipment which
may catch or pinch body
parts, such as the power
window, hood, back door,
seats, etc.
WARNING
■When children are in the vehi-
cle
Never leave children unattended
in the vehicle, and never allow
children to have or use the key.
Children may be able to start the
vehicle or shift the vehicle into
neutral. There is also a danger
that children ma y injure them-
selves by playing with the side
windows, the moon roof (if
equipped) or other features of the
vehicle. In addition, heat build-up
or extremely cold temperatures
inside the vehicle can be fatal to
children.

631-2. Child safety
1
For safety and security
A child restraint system for a
small child or baby must itself be
properly restrained on the seat
with the lap portion of the
lap/shoulder belt.
■Installing child restraint
system using a seat belt
(child restraint lock func-
tion belt)
Install the child restraint system
in accordance to the operation
manual enclosed with the child
restraint system.
■Rear-facing  Infant
seat/convertible seat
1 Adjust the rear seat.
If there is a gap between the child
restraint system and the seatback,
adjust the seatback angle until
good contact is achieved.
WARNING
●Do not allow the child to lean
his/her head or any part of
his/her body against the door or
the area of the seat, front or rear
pillars, or roof side rails from
which the SRS side airbags or
SRS curtain shield airbags
deploy even if the child is
seated in the child restraint sys-
tem. It is dangerous if the SRS
side airbags and curtain shield
airbags inflate, and the impact
could cause death or serious
injury to the child.
●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.
●Use a child restraint system
suitable to the age and size of
the child and install it to the rear
seat.
●If the driver’s seat interferes
with the child restraint system
and prevents it from being
attached correctly, attach the
child restraint system to the
right-hand rear seat.
●Adjust the front passenger seat
so that it does not interfere with
the child restraint system.
Child restraint system
fixed with a seat belt

641-2. Child safety
2Place the child restraint sys-
tem on the rear seat facing
the rear of the vehicle.
3 Run the seat belt through the
child restraint system and
insert the plate into the
buckle. Make sure that the
belt is not twisted.
4 Fully extend the shoulder belt
and allow it to retract to put it
in lock mode. In lock mode,
the belt cannot be extended.
5 While pushing the child
restraint system down into the rear seat, allow the shoul-
der belt to retract until the
child restraint system is
securely in place.
After the shoulder belt has
retracted to a poi
nt where there is
no slack in the belt, pull the belt to
check that it cannot be extended.
6 After installing the child
restraint system, rock it back
and forth to ensure that it is
installed securely. ( P.67)
■Forward-facing  Convert-
ible seat
1 Adjust the seat.
When using the front passenger
seat: If installing th e child restraint
system to the front passenger seat
is unavoidable, refer to P.61for
front passenger seat adjustment.
When using the rear seat: If there is
a gap between the child restraint
system and the seatback, adjust
the seatback angle until good con-
tact is achieved.
2 If the head restraint interferes
with the child restraint system
installation and the head
restraint can be removed,

651-2. Child safety
1
For safety and security
remove the head restraint.
(P.183)
3 Place the child restraint sys-
tem on the seat facing the
front of the vehicle.
4 Run the seat belt through the
child restraint system and
insert the plate into the
buckle. Make sure that the
belt is not twisted.
5 Fully extend the shoulder belt
and allow it to retract to put it in lock mode. In lock mode,
the belt cannot be extended.
6 While pushing the child
restraint system into the rear
seat, allow the shoulder belt
to retract until the child
restraint system is securely in
place.
After the shoulder belt has
retracted to a poi nt where there is
no slack in the belt, pull the belt to
check that it cannot be extended.
7 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)
8 After installing the child
restraint system, rock it back