Page 89 of 623

A front passenger is seated as shown
in the following figure:
A rear passenger pushes up on the
front passenger seat with their feet.
Luggage or other items placed under
the front passenger seat or between
the front passenger seat and driver
seat that push up the front passenger
seat bottom.
Any accessories which might
decrease the total seated weight on
the front passenger seat are attached
to the front passenger seat.
The front passenger front and side air
bags and knee air bags, and the seat
belt pretensioner system will
deactivate if the front passenger air
bag deactivation indicator light
illuminates.
Do not increase the total seated
weight on the front passenger seat:
When an infant or small child sits on
the front passenger seat, increasing the
total seated weight on the front
passenger seat is dangerous. The front
passenger seat weight sensors will
detect the increased total seated
weight, which could result in the
unexpected deployment of the front
passenger front and side air bags and
knee air bags, and seat belt
pretensioner system in an accident and
may cause serious injury. Increasing the
total seated weight on the front
passenger seat could result in the front
passenger front and side air bags and
knee air bags, and seat belt
pretensioner system deployment in an
accident under the following
conditions, for example:
Luggage or other items are placed on
the seat with the child in the
child-restraint system.
A rear passenger or luggage push or
pull down on the front passenger
seatback.
Essential Safety Equipment
SRS Air Bags
2-72
Mazda3_8LC2-EA-22G_Edition1_new 2022-5-20 11:26:10
Page 90 of 623

A rear passenger steps on the front
passenger seat rails with their feet.
Luggage or other items are placed on
the seatback or hung on the head
restraint.
Heavy items are placed in the
seatback map pocket.
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.
Any accessories which might increase
the total seated weight on the front
passenger seat are attached to the
front passenger seat.
CAUTION
To assure proper deployment of the
front air bag and to prevent damage
to the sensors in the front seat
bottoms:
Do not place sharp objects on the
front seat bottoms or leave heavy
luggage on them.
Do not spill any liquids on the
front seats or under the front seats.
To allow the sensors to function
properly, always perform the
following:
Adjust the front seats as far back as
possible and always sit upright
against the seatbacks with seat
belts worn properly.
If you place your child on the front
passenger seat, secure the
child-restraint system properly and
slide the front passenger seat as far
back as possible (page 2-46).
NOTE
The system requires about 10
seconds to alternate between turning
the front passenger front and side air
bags and knee air bags, and seat belt
pretensioner system on or off.
The front passenger air bag
deactivation indicator light may
illuminate repeatedly if luggage or
other items are put on the front
passenger seat, or if the temperature
of the vehicle's interior changes
suddenly.
The front passenger air bag
deactivation indicator light may
illuminate for 10 seconds if the total
seated weight on the front passenger
seat changes.
The air bag/seat belt pretensioner
system warning light might illuminate
if the front passenger seat receives a
severe impact.
If the front passenger air bag
deactivation indicator light does not
illuminate after installing a
child-restraint system on the front
passenger seat, first, re-install your
child-restraint system according to
the procedure in this owner's
manual. Then, if the front passenger
air bag deactivation indicator light
still does not illuminate, install the
child-restraint system on the rear seat
and consult an Authorized Mazda
Dealer as soon as possible.
Essential Safety Equipment
SRS Air Bags
2-73
Mazda3_8LC2-EA-22G_Edition1_new 2022-5-20 11:26:10
Page 91 of 623

If the front passenger air bag
deactivation indicator light
illuminates when an adult is seated
in the front passenger seat, have the
passenger re-adjust their posture by
sitting with their feet on the floor,
and then re-fastening the seat belt. If
the front passenger air bag
deactivation indicator light still
illuminates, move the passenger to
the rear seat. If sitting in the rear seat
is not possible, slide the front
passenger seat as far back as
possible. Consult an Authorized
Mazda Dealer as soon as possible.
▼Driver and Front Passenger Buckle
Switches
The buckle switches on the front seat
belts detect whether or not the front
seat belts are securely fastened and
further control the deployment of the
air bags.
Constant Monitoring
▼ Constant Monitoring
The following components of the air
bag systems are monitored by a
diagnostic system:
Front air bag sensorsCrash sensors, and diagnostic
module (SAS unit)
Side crash sensorsAir bag modulesSeat belt pretensionersAir bag/Seat belt pretensioner
system warning light
Related wiring
(With Driver and Front Passenger
Occupant Classification System)
Driver seat slide position sensorFront passenger occupant
classification sensor
Front passenger occupantclassification module
Front passenger air bag deactivation
indicator light
Front passenger seat belt buckle
switch
The diagnostic module continuously
monitors the system's readiness. This
begins when the ignition is switched
ON and continues while the vehicle is
being driven.
Essential Safety Equipment
SRS Air Bags
2-74
Mazda3_8LC2-EA-22G_Edition1_new 2022-5-20 11:26:10
Page 92 of 623

3Before Driving
Use of various features, including keys, doors, mirrors and
windows.
Keys........................................ 3-2 Keys...................................... 3-2
Keyless Entry System...............3-4
Advanced Keyless Entry
System.....................................3-9 Advanced Keyless Entry
System
*................................. 3-9
Operational Range...............3-10
Doors and Locks..................... 3-11 Door Locks.......................... 3-11
Liftgate/Trunk Lid.................3-20
Inside Trunk Release Lever (4-
door)
*................................. 3-24
Fuel and Emission................... 3-26 Fuel and Engine Exhaust
Precautions......................... 3-26
Fuel-Filler Lid and Cap..........3-28
Mirrors.................................. 3-31 Mirrors................................3-31
Windows............................... 3-35 Power Windows...................3-35
Moonroof*.......................... 3-38
Security System.......................3-42 Modification and Add-
On Equipment..................... 3-42
Immobilizer System..............3-42
Theft-Deterrent System
*........3-44
Driving Tips............................ 3-46 Break-In Period.................... 3-46
Saving Fuel and Protection of the
Environment........................ 3-46
Hazardous Driving............... 3-47
Floor Mat............................ 3-48
Rocking the Vehicle..............3-48
Winter Driving..................... 3-49
Driving In Flooded Area........3-51
Overloading........................ 3-51
Driving on Uneven Road.......3-52
Turbocharger Information
(SKYACTIV-G 2.5T).............. 3-52
Towing.................................. 3-53 Trailer Towing...................... 3-53
Recreational Towing............. 3-53
*Some models.3-1
Mazda3_8LC2-EA-22G_Edition1_new 2022-5-20 11:26:10
Page 93 of 623

Keys
▼Keys
WARNING
Do not leave the key in your vehicle
with children and keep them in a
place where your children will not
find or play with them:
Leaving children in a vehicle with the
key is dangerous. This could result in
someone being badly injured or even
killed. Children may find these keys to
be an interesting toy to play with and
could cause the power windows or
other controls to operate, or even
make the vehicle move.
CAUTION
Because the key (transmitter) uses
low-intensity radio waves, it may not
function correctly under the
following conditions:
The key (transmitter) is carried with
communication devices such as
cellular phones.
The key (transmitter) contacts or is
covered by a metal object.
The key (transmitter) is near
electronic devices such as personal
computers.
Non-Mazda genuine electronic
equipment is installed in the
vehicle.
There is equipment which
discharges radio waves near the
vehicle.
The key (transmitter) may consume
battery power excessively if it
receives high-intensity radio waves.
Do not place the key (transmitter)
near electronic devices such as
televisions or personal computers.
To avoid damage to the key
(transmitter), DO NOT:
Drop the key (transmitter).
Get the key (transmitter) wet.
Disassemble the key (transmitter).
Expose the key (transmitter) to
high temperatures on places such
as the dashboard, under direct
sunlight.
Expose the key (transmitter) to any
kind of magnetic field.
Place heavy objects on the key
(transmitter).
Put the key (transmitter) in an
ultrasonic cleaner.
Put any magnetized objects close
to the key (transmitter).
NOTE
The driver must carry the key
(transmitter) to ensure the system
functions properly.
If the key (transmitter) does not
function normally, make sure that the
power saving function of the key
(transmitter) is not on. If it is on,
switch the function to off.
Refer to Transmitter on page 3-5.
Tra n s m i t te r
Before Driving
Keys
3-2
Mazda3_8LC2-EA-22G_Edition1_new 2022-5-20 11:26:10
Page 94 of 623
1. Transmitter (page 3-5)
Auxiliary key
There is a removable auxiliary key
inside the transmitter.
Removing the auxiliary key
1. Remove the lower cover whilesliding the knob in the direction of
the arrow.
2. Remove the auxiliary key.
Installing the auxiliary key
1. Install the auxiliary key as the
illustration.
2. Insert the tabs of the lower coverinto the slots of the transmitter and
install the lower cover.
Key code number plate
A code number is stamped on the
plate attached to the key set; detach
this plate and store it in a safe place
(not in the vehicle) for use if you need
to make a replacement key (auxiliary
key).
Also write down the code number and
keep it in a separate safe and
convenient place, but not in the
vehicle.
If your key (auxiliary key) is lost, consult
an Authorized Mazda Dealer and have
your code number ready.
1. Key code number plate
Before Driving
Keys
3-3
Mazda3_8LC2-EA-22G_Edition1_new 2022-5-20 11:26:10
Page 95 of 623

Keyless Entry System
▼Keyless Entry System
This system uses the key buttons to
remotely lock and unlock the doors,
liftgate, and fuel-filler lid, and opens
the trunk lid.
The system can start the engine
without having to take the key out of
your purse or pocket.
It can also help you signal for attention
or help.
Operating the theft-deterrent system is
also possible on theft-deterrent
system-equipped vehicles.
System malfunctions or warnings are
indicated by the following warning
lights or beeps.
Check the displayed message for more
information and, if necessary, have the
vehicle inspected at an Authorized
Mazda Dealer, according to the
indication.
KEY Warning Indication/Warning
Light (Red)
Refer to KEY Warning Indication/
Warning Light (Red) on page 7-34.
Ignition Not Switched Off (STOP)
Warning Beep
Refer to Ignition Not Switched
Off
(STOP) Warning Beep on page
7-44.
Key Removed from Vehicle Warning
Beep
Refer to Key Removed from Vehicle
Warning Beep on page 7-44.
If you have a problem with the key,
consult an Authorized Mazda Dealer.
If your key is lost or stolen, consult an
Authorized Mazda Dealer as soon as
possible for a replacement and to
make the lost or stolen key inoperative.
CAUTION
Radio equipment like this is governed
by laws in the United States.
Changes or modifications not expressly
approved by the party responsible for
compliance could void the user's
authority to operate the equipment.
NOTE
The keyless entry system operation
may vary due to local conditions.
The keyless entry system is fully
operational when the ignition is
switched off. The system does not
operate if the ignition is switched to
any position other than off.
If the key does not operate when
pressing a button or the operational
range becomes too small, the battery
may be weak. To install a new
battery, refer to Key Battery
Replacement (page 6-30).
Battery life is about 1 year. Replace
the battery with a new one if the
messages are displayed in the
instrument cluster. Replacing the
battery about once a year is
recommended because the KEY
warning indication may not display
depending on the rate of battery
depletion.
Additional keys can be obtained at
an Authorized Mazda Dealer. Up to
6 keys can be used with the keyless
functions per vehicle. Bring all keys
to an Authorized Mazda Dealer
when additional keys are required.
Before Driving
Keys
3-4
Mazda3_8LC2-EA-22G_Edition1_new 2022-5-20 11:26:10
Page 96 of 623

▼Transmitter
1. Operation indicator light
2. Lock button (
)
3. Unlock button (
)
4. Trunk button (4–door) (
)
5. Panic button (
)
NOTE
The headlights turn on/off by
operating the transmitter. Refer to
Leaving Home Light on page 4-61.
(With theft-deterrent system)
The hazard warning lights flash when
the theft-deterrent system is armed
or turned off.
Refer to Theft-Deterrent System on
page 3-44.
(With the advanced keyless
function)
A beep sound can be heard for
confirmation when the doors,
liftgate, and fuel-filler lid are locked/
unlocked using the key. If you prefer,
the beep sound can be turned off.
The volume of the beep sound can
also be changed.
Refer to the Settings section in the
Mazda Connect Owner's Manual.
The operation indicator light flashes
when the buttons are pressed.
Lock button
To lock the doors, liftgate, and
fuel-filler lid, press the lock button and
the hazard warning lights will flash
once.
(With the advanced keyless function)
A beep sound will be heard once.
To confirm that all the doors, liftgate,
and fuel-filler lid have been locked,
press the lock button again within 5
seconds. If they are closed and locked,
the horn will sound.
NOTE
The doors can be locked when the
lock button on the transmitter is
pressed while any door is open.
To prevent the transmitter from being
left in the vehicle, make sure that the
driver carries the transmitter when
locking the doors with any door
open.
When any door or the liftgate/trunk
lid is open and the lock button is
pressed, the closed doors can be
locked. After that, any other open
door or the liftgate/trunk lid can be
locked by closing them.
Before Driving
Keys
3-5
Mazda3_8LC2-EA-22G_Edition1_new 2022-5-20 11:26:10