belt MAZDA MODEL 3 HATCHBACK 2021 Owner's Manual

Do not leave a seat belt extender
connected to the buckle:
Leaving a seat belt extender connected
to the buckle without using the seat
belt is dangerous. When the seat belt
extender is connected to the driver's
seat belt buckle (or front passenger's
seat belt buckle), the SRS driver's (or
front passenger's) air bag system will
determine that the driver (or front
passenger) is wearing the seat belt
even if the driver (or front passenger) is
not wearing it. This condition could
cause the driver's (or front
passenger's) air bag to not activate
correctly and result in death or serious
injury in the event of collision. Always
wear the seat belt with the seat belt
extender.
Do not use the seat belt extender
when installing a child-restraint
system on the front or rear passenger
seat:
Using a seat belt extender to fasten a
child-restraint system on any seat is
dangerous. Always follow the
child-restraint system manufacturer's
installation instructions and never use
a seat belt extender.
NOTE
When not in use, remove the seat belt
extender and store it in the vehicle. If
the seat belt extender is left
connected, the seat belt extender
might get damaged as it will not retract
with the rest of the seat belt and can
easily fall out of the door when not in
use and be damaged. In addition, the
seat belt warning light will not
illuminate and function properly.
Essential Safety Equipment
Seat Belt Systems
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Child-RestraintPrecautions
▼ Child-Restraint Precautions
Mazda strongly urges the use of
child-restraint systems for children
small enough to use them.

You are required by law to use a
child-restraint system for children in
the U.S. and Canada.
Check your local and state or
provincial laws for speci
fic
requirements regarding the safety of
children riding in your vehicle.

Whatever child-restraint system you
consider, please pick the appropriate
one for the age and size of the child,
obey the law and follow the
instructions that come with the
individual child-restraint system.

A child who has outgrown
child-restraint systems should sit in the
rear and use seat belts, both lap and
shoulder. If the shoulder belt crosses
the neck or face, move the child closer
to the center of the vehicle in the
outboard seats, and towards the
buckle on the right if the child is seated
on the center seat.

Statistics con firm that the rear seat is
the best place for all children up to 12
years of age, and more so with a
supplemental restraint system (air
bags).

A rear-facing child-restraint system
should NEVER be used on the front
seat with the air bag system activated.
The front passenger's seat is also the
least preferred seat for other
child-restraint systems.

(With Front Passenger Occupant
Classi fication System)
To reduce the chance of injuries
caused by deployment of the front
passenger air bag, the front passenger
seat weight sensors occupant
classi fication sensor works as a part of
the supplemental restraint system. This
system deactivates the front passenger
front and side air bags and knee air
bags, and also the front passenger seat
belt pretensioner system when the
front passenger air bag deactivation
indicator light illuminates.

When an infant or small child sits on
the front passenger seat, the system
shuts o ff the front passenger front and
side air bags and knee air bags, and
seat belt pretensioner system, so make
sure the front passenger air bag
deactivation indicator light illuminates.

Even if the front passenger air bag is
shut o ff, Mazda strongly recommends
that children be properly restrained
and child-restraint systems of all kinds
are properly secured on the rear seats
which are the best place for children.

For more details, refer to "Front
passenger seat weight sensors" (page
2-71).

Essential Safety Equipment
Child Restraint
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WARNING
Use the correct size child-restraint
system:
For eff ective protection in vehicle
accidents and sudden stops, a child
must be properly restrained using a
seat belt or child-restraint system
depending on age and size. If not, the
child could be seriously injured or even
killed in an accident.
Follow the manufacturer's
instructions and always keep the
child-restraint system buckled down:
An unsecured child-restraint system is
dangerous. In a sudden stop or a
collision it could move causing serious
injury or death to the child or other
occupants. Make sure any
child-restraint system is properly
secured in place according to the
child-restraint system manufacturer's
instructions. When not in use, remove
it from the vehicle or fasten it with a
seat belt, or attach it to BOTH ISOFIX/
LATCH
*1 lower anchors for ISOFIX/
LATCH*1 child-restraint systems and
the corresponding tether anchor.
*1 ISOFIX (Mexico)/LATCH (Except Mexico)
Always secure a child in a proper
child-restraint system:
Holding a child in your arms while the
vehicle is moving is extremely
dangerous. No matter how strong the
person may be, he or she cannot hold
onto a child in a sudden stop or
collision and it could result in serious
injury or death to the child or other
occupants. Even in a moderate
accident, the child may be exposed to
air bag forces that could result in
serious injury or death to the child, or
the child may be slammed into an
adult, causing injury to both child and
adult.
Never use a rear-facing child-restraint
system in the front seat with an air
bag that could deploy:
Rear-facing child-restraint systems on
the front seat are particularly
dangerous even though you may feel
assured that a front passenger air bag
will not deploy based on the fact that
the front passenger air bag
deactivation indicator light illuminates.
The child-restraint system can be hit by
a deploying air bag and moved
violently backward resulting in serious
injury or death to the child.
Essential Safety Equipment
Child Restraint
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The front passenger air bag
deactivation indicator light does not
illuminate when seating a child in the
child-restraint system.
 Luggage or other items are placed on
the seat with the child in the
child-restraint system.
 A rear passenger or luggage pushing
or pulling down on the front
passenger seatback.
 Luggage or other items are placed on
the seatback or hung on the head
restraint.
 The seat is washed.
 Liquids are spilled on the seat.
 The front passenger seat is moved
backward, pushing into luggage or
other items placed behind it.
 The front passenger seatback
contacts the rear seat.
 Luggage or other items are placed
between the front passenger seat
and driver seat.
 An electric device is put on the front
passenger's seat.
 An additional electrical device, such
as a seat warmer is installed to the
surface of the front passenger seat.
 Any accessories, which might
increase the total seated weight on
the front passenger seat, are
attached to the front passenger seat.
The designated positions with seat
belts on the rear seats are the safest
places for children. Always use seat
belts and child restraints.Do not allow a child or anyone to
lean over to or against the side
window of a vehicle with side and
curtain air bags:
It is dangerous to allow anyone to lean
over to or against the side window, the
area of the front passenger seat, the
front and rear window pillars and the
roof edge along both sides from which
the side and curtain air bags deploy,
even if a child-restraint system is used.
The impact of in flation from a side or
curtain air bag could cause serious
injury or death to an out of position
child. Furthermore, leaning over to or
against the front door could block the
side and curtain air bags and eliminate
the advantages of supplemental
protection. Because the front seats are
equipped with fron t air bags, the rear
seat is always a better location for
children. Take special care not to allow
a child to lean over to or against the
side window, even if the child is seated
in a child-restraint system.
Never use one seat belt on more than
one person at a time:
Using one seat belt for more than one
person at a time is dangerous. A seat
belt used in this way cannot spread the
impact forces properly and the two
passengers could be crushed together
and seriously injured or even killed.
Never use one belt for more than one
person at a time and always operate
the vehicle with each occupant
properly restrained.
CAUTION
A seat belt or child-restraint system can
become very hot in a closed vehicle
during warm weather. To avoid burning
yourself or a child, check them before
you or your child touches them.
Essential Safety Equipment
Child Restraint
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Due to variations in the design of
child-restraint systems, vehicle seats
and seat belts, all child-restraint
systems may not fit all seating
positions. Before purchasing a
child-restraint system, it should be
tested in the speci fic vehicle seating
position (or positions) where it is
intended to be used. If a previously
purchased child-restraint system
does not fit, you may need to
purchase a di fferent one that will.
Infant seat
An infant seat provides restraint by
bracing the infant's head, neck and
back against the seating surface.
Equal to Group 0 and 0+ of the UN-R
44 and UN -R 129 regulation.
Child seat
A child seat restrains a child's body
using the harness.
Equal to Group 1 of the UN -R 44 and
UN -R 129 regulation.
Booster seat
A booster seat is a child restraint
accessory designed to improve the fit
of the seat belt system around the
child's body.
Equal to Group 2 and 3 of the UN -R
44 and UN -R 129 regulation.
1. Full booster seat
2. Backless booster seat

When using a backless booster seat,
always install the vehicle head restraint
to the seat where the backless booster
seat is installed.
Essential Safety Equipment
Child Restraint
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Child-Restraint System Suitability for Various SeatPo s i t i o n s Ta b l e
▼Child-Restraint System Suitability
for Various Seat Positions Table
(Mexico)
Provided information in the table shows your child-restraint system suitability for
various seating position. For installation suitability of other manufacturer
child-restraint system, carefully consult the manufacturer's instructions which
accompany the child-restraint system.
When installing a child-re straint system, the following points must be observed:
Always remove the head restraint before installing a child-restraint system.
However, when installing a backless booster seat, always install the vehicle head
restraint to the seat where the backless b ooster seat is installed. In addition,
always use a tether strap and attach it securely. Refer to Head Restraints on page
2-17.
When installing a child-restraint system to the front passenger seat, adjust the seat
slide position as far back as possible.
Refer to Adjusting the Front Passenger's Seat on page 2-13.
When it is di fficult to install a child-restraint sy stem to the front passenger seat, or
the seat belt cannot be secured to th e child-restraint system, perform the
following operations to adjust the seat ho lding the child-restraint system so that
the seat belt can be secured completely to it.
Move the seat forward or back.Move the seatback forward or back.Move the seat upward or downward. (Veh icles with height adjustment function)When installing a child-restraint system to the rear seat, adjust the front seat
position so that the front seat does not contact the child-restraint system.
Refer to Adjusting the Driver's Seat on page 2-5.
Refer to Adjusting the Front Passenger's Seat on page 2-13.
When installing a child-restraint system equipped with a tether, remove the head
restraint.
Refer to Head Restraints on page 2-17.
An i-Size child-restraint system refers to a child-restraint system which has
acquired i-Size category certi fication for the UN-R 129 regulation.
Essential Safety Equipment
Child Restraint
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When installing a child-restraint system to the rear seat, refer to the child-restraint
system manufacturer's instructions and the Using ISOFIX Lower Anchor on page
2-50.
Seating position Passenger Rear (Left) Rear (Center) Rear (Right)
Seating position
suitable for univer-
sal belted (Yes/No) Yes (UF) Yes (U) Yes (U) Yes (U)
i-Size seating posi-
tion (Yes/No) No
No NoNo
Largest suitable
rearward facing fix-
ture (R1) No
Yes (IL) NoYes (IL)
Largest suitable
rearward facing fix-
ture (R2) No
Yes (IL) NoYes (IL)
Largest suitable
rearward facing fix-
ture (R2X) No
Yes (IL) NoYes (IL)
Largest suitable
rearward facing fix-
ture (R3) No
Yes (IL) NoYes (IL)
Largest suitable for-
ward facing fixture
(F2) No
Yes (IUF) NoYes (IUF)
Largest suitable for-
ward facing fixture
(F2X) No
Yes (IUF) NoYes (IUF)
Largest suitable for-
ward facing fixture
(F3) No
Yes (IUF) NoYes (IUF)
Largest suitable lat-
eral facing fixture
(L1) No
No NoNo
Largest suitable lat-
eral facing fixture
(L2) No
No NoNo
Largest suitable
booster fixture (B2) No
Yes (IUF) NoYes (IUF)
Largest suitable
booster fixture (B3) No
Yes (IUF) NoYes (IUF)
Essential Safety Equipment
Child Restraint
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(5–Door)
1. Tether strap
2. Anchor bracket
3. Forward

Always install the head restraint and
adjust it to the appropriate position
after removing the child-restraint
system:
Driving with the head restraint
removed is dangerous as impact to the
occupant's head cannot be prevented
during emergency braking or in a
collision, which could result in a
serious accident, injury or death.
Refer to Head Restraints on page 2-17.
▼Using Automatic Locking Mode
(Except Mexico)
Follow these instructions when using a
child-restraint system, unless you are
attaching a LATCH
-equipped
child-restraint system to the rear
LATCH lower anchors. Refer to “Using
LATCH Lower Anchor” (page 2-50).
NOTE
Follow the child-restraint system
manufacturer's instructions carefully. If
you are not sure whether you have a
LATCH system or tether, check in the
child-restraint system manufacturer's
instructions and follow them
accordingly. Depending on the type of
child-restraint system, it may use
LATCH system instead of seat belts or if
the belt goes across the child's chest,
may recommend against using
automatic locking mode.
1. Make sure the seatback is securely latched by pushing it back until it is
fully locked.
2. Remove the head restraint. However, when installing a backless
booster seat, always install the
vehicle head restraint to the seat
where the backless booster seat is
installed.
Refer to Head Restraints on page
2-17.
3. Secure the child-restraint system with the lap portion of the lap/
shoulder belt. See the
manufacturer's instructions on the
child-restraint system for belt
routing instructions.
Essential Safety Equipment
Child Restraint
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4. To get the retractor into theautomatic locking mode, pull the
shoulder belt portion of the seat
belt until the entire length of the
belt is out of the retractor.
5. Push the child-restraint system
firmly into the vehicle seat. Be sure
the belt retracts as snugly as
possible. A clicking noise from the
retractor will be heard during
retraction if the system is in the
automatic locking mode. If the belt
does not lock the seat down tight,
repeat this step.
NOTE
Inspect this function before each
use of the child-restraint system.
You should not be able to pull the
shoulder belt out of the retractor
while the system is in the
automatic locking mode. When
you remove the child-restraint
system, be sure the belt fully
retracts to return the system to
emergency locking mode before
occupants use the seat belts.
6. If your child-restraint system requires the use of a tether strap,
refer to the manufacturer's
instructions to hook and tighten the
tether strap.
WARNING

Use the tether and tether anchor only
for a child-restraint system:
Using the tether or tether anchor to
secure anything but a child-restraint
system is dangerous. This could
weaken or damage the tether or tether
anchor and result in injury.
Always remove the head restraint and
install child-restraint system (except
when installing a backless booster
seat):
Installing a child-restraint system
without removing the head restraint is
dangerous. The child-restraint system
cannot be installed correctly which
may result in death or injury to the
child in a collision.
Essential Safety Equipment
Child Restraint
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▼If You Must Use the Front Seat for
Children
If you cannot put all children in the
rear seat, at least put the smallest
children in the rear and be sure the
largest child up front uses the shoulder
belt over the shoulder.
NEVER put a rear-facing child-restraint
system on the front passenger seat
whether your vehicle is equipped with
an occupant classi
fication sensor or
not.
This seat is also not set up for tethered
child-restraint systems, put them in
one of the rear seat positions set up
with tether anchors.
Likewise the ISOFIX/LATCH
*1
child-restraint system cannot be
secured in the front passenger's seat
and should be used in the rear seat.
Do not allow anyone to sleep against
the side window since your vehicle has
side and curtain air bags, it could
cause serious injuries to an out of
position occupant. As children more
often sleep in cars, it is better to put
them in the rear seat. If installing the
child-restraint system on the front seat
is unavoidable, follow these
instructions when using a front-facing
child-restraint system in the front
passenger's seat.
*1 ISOFIX (Mexico)/LATCH (Except Mexico)
NOTE
To check if your front seats have side
air bags:
Mazda vehicles equipped with side
air bag will have a "SRS AIRBAG" tag
on the outboard shoulder of the
front seats.
To check if your vehicle has curtain
air bags:
Mazda vehicles equipped with
curtain air bag will have an "SRS
AIRBAG" marking on the window
pillars along the roof edge.
WARNING
Always move the front passenger seat
as far back as possible if installing a
front-facing child-restraint system on
it is unavoidable:
As your vehicle has front air bags and
doubly so because your vehicle has
side air bags, a front-facing
child-restraint system should be put on
the front passenger seat only when it is
unavoidable.
Even if the front passenger air bag
deactivation indicator light illuminates,
always move the seat as far back as
possible, because the force of a
deploying air bag could cause serious
injury or death to the child.
Never use a rear-facing child-restraint
system in the front seat with an air
bag that could deploy:
Rear-facing child-restraint systems on
the front seat are particularly
dangerous.
Even in a moderate collision, the
child-restraint system can be hit by a
deploying air bag and moved violently
backward resulting in serious injury or
death to the child. Even though you
may feel assured that the front
passenger air bag will not deploy
based on the fact that the front
passenger air bag deactivation
indicator light illuminates, you should
not use a rear-facing child-restraint
system in the front seat.
Essential Safety Equipment
Child Restraint
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