battery MAZDA MODEL 3 SEDAN 2021 Owners Manual

CAUTION
When operating a seat, be careful
not to put your hands or fingers near
the moving parts of the seat or on
the side trim to prevent injury.
 When moving the seats, make sure
there is no cargo in the surrounding
area. If the cargo gets caught it could
damage the cargo.
 (Manual Seat)
When moving the seats forward and
rearward or returning a rear-reclined
seatback to its upright position,
make sure you hold onto the
seatback with your hand while
operating. If the seatback is not held,
the seat will move suddenly and
could cause injury.
 When inserting your hand under the
seat to clean the cabin or pick up
something you dropped under the
seat, be careful not to hurt yourself.
If you contact the moving parts and
surrounding parts around the seat
rail, seat frame, and the bottom of
the seat, it could result in injury.
NOTE
When returning a rear seat to its
original position, place the seat belt
in its normal position. Verify that the
seat belt pulls out and retracts.
(Power Seat)
The seat-bottom power adjustment
is operated by motors. Avoid
extended operation because
excessive use can damage the
motors.
To prevent the battery from
running down, avoid using the
power adjustment when the
engine is stopped. The adjuster
uses a large amount of electrical
power.
Do not use the switch to make
more than one adjustment at a
time.
Essential Safety Equipment
Seats
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Keys
▼Keys
WARNING
Do not leave the key in your vehicle
with children and keep them in a
place where your children will not
fi
nd 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.
Before Driving
Keys
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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 7-33.
Ignition Not Switched O ff (STOP)
Warning Beep
Refer to Ignition Not Switched Off
(STOP) Warning Beep on page
7-43.
Key Removed from Vehicle Warning
Beep
Refer to Key Removed from Vehicle
Warning Beep on page 7-43.
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 modi fications 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 o ff.
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 6-31).
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
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(Turning on the alarm)
Pressing the panic button for 1 second
or more will trigger the alarm for about
2 minutes and 30 seconds, and the
following will occur:
The horn sounds intermittently.The hazard warning lights flash.
(Turning off the alarm)
The alarm stops by pressing any button
on the key.
Power saving function
By turning on the transmitter power
saving function, the advanced keyless
entry
*1 and push button start system
functions turn o ff and the battery
power consumption of the transmitter
is restricted.
The remote control function is
operational by operating the
transmitter switch even while the
power saving function is turned on.
However, the operation indicator light
of the transmitter does not turn on/
fl ash.
Turning on the power saving function
After you have turned on the power
saving function according to the
following procedure, the hazard
warning lights and sound operate
*1
one time.
1. Press the lock button on the transmitter 4 times within 3
seconds to turn on the operation
indicator light.
2. Press the lock button continuously for 1.5 seconds or longer while the
operation indicator light turns on
(for 5 seconds).
3. Press any of the buttons on the transmitter to make sure that the
operation indicator light does not
turn on/ flash.
Tu r n i n g o ff the power saving function
After you have turned off the power
saving function according to the
following procedure, the hazard
warning lights and sound operate
*1
one time.
1. Press any of the buttons on the transmitter to make sure that the
operation indicator light does not
turn on/fl ash.
2. Press the lock button on the transmitter 4 times within 3
seconds to turn on the operation
indicator light.
3. Press the lock button continuously for 1.5 seconds or longer while the
operation indicator light turns on
(for 5 seconds).
*1 With the advanced keyless function
▼Operational Range
The system operates only when the
driver is in the vehicle or within
operational range while the key is
being carried.
Starting the engine
NOTE
Starting the engine may be possible
even if the key is outside of the
vehicle and extremely close to a door
and window, however, always start
the engine from the driver's seat.
If the vehicle is started and the key is
not in the vehicle, the vehicle will not
restart after it is shut o
ff and the
ignition is switched o ff.
The luggage compartment/trunk is
out of the assured operational range,
however, if the key (transmitter) is
operable the engine will start.
Before Driving
Keys
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Advanced Keyless EntrySystem
*
▼Advanced Keyless Entry System
WARNING
Radio waves from the key may a
ffect
medical devices such as pacemakers:
Before using the key near people who
use medical devices, ask the medical
device manufacturer or your physician
if radio waves from the key will aff ect
the device.
The advanced keyless function allows
you to lock/unlock the door, liftgate,
and fuel- filler lid, or open the liftgate/
trunk lid while carrying the key.

System malfunctions or warnings are
indicated by the following warning
beeps.
Touch Sensor Inoperable Warning
Beep
Refer to Touch Sensor Inoperable
Warning Beep (With the advanced
keyless function) on page 7-44.
Liftgate Door-lock Switch Inoperable
Warning Beep
Refer to Liftgate Door-lock Switch
Inoperable Warning Beep (With the
advanced keyless function) on page
7-44.
Key Left-in-luggage Compartment/
Trunk Warning Beep
Refer to Key Left-in-luggage
Compartment/Trunk Warning Beep
(With the advanced keyless function)
on page 7-44.
Key Left-in-vehicle Warning Beep
Refer to Key Left-in-vehicle Warning
Beep (With the advanced keyless
function) on page 7-44.
NOTE
The advanced keyless entry system
functions can be deactivated to
prevent any possible adverse eff ect on
a user wearing a pacemaker or other
medical device. If the system is
deactivated, you will be unable to start
the engine by carrying the key. Consult
an Authorized Mazda Dealer for
details. If the advanced keyless entry
system has been deactivated, you can
start the engine by following the
procedure indicated when the key
battery goes dead.
Refer to Engine Start Function When
Key Battery is Dead on page 4-8.
Before Driving
Advanced Keyless Entry System
*Some models.3-9
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Operational Range
▼Operational Range
The system operates only when the
driver is in the vehicle or within
operational range while the key is
being carried.
NOTE
When the battery power is low, or in
places where there are high-intensity
radio waves or noise, the operational
range may become narrower or the
system may not operate. For
determining battery replacement,
Refer to Keyless Entry System on page
3-4.
▼Locking/Unlocking Using Touch
Sensor
1. Exterior antenna
2. 80 cm (31 in)
3. Operational range

NOTE
The system may not operate if you
are too close to the windows or door
handles.
If the key is left in the following areas
and you leave the vehicle, the doors
may be locked depending on the
radio wave conditions even if the key
is left in the vehicle.
Around the dashboardIn the storage compartments such
as the glove compartment or the
center console
On the rear parcel shelf (4–door)Next to a communication device
such as a mobile phone
▼
Locking Using Door-Lock Switch
(5–door)/Unlocking Using Electric
Opener
1. Exterior antenna
2. 80 cm (31 in)
3. Operational range
Before Driving
Advanced Keyless Entry System
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NOTE
Always stop the engine and lock the
doors. In addition, to prevent theft of
valuables, do not leave them inside
the cabin.
If the key is left in the following areas
and you leave the vehicle, the doors
may be locked depending on the
radio wave conditions even if the key
is left in the vehicle.
Around the dashboardIn the storage compartments such
as the glove compartment or the
center console
On the rear parcel shelf (4–door)Next to a communication device
such as a mobile phone
When the ignition is switched to
ACC or ON, the vehicle lock-out
prevention feature prevents you from
locking yourself out of the vehicle.
All doors, fuel-filler lid, and liftgate
will automatically unlock if they are
locked using the power door locks
with any door or the liftgate open.
The vehicle lock-out prevention
feature does not operate while the
ignition is switched o ff.
When all doors, fuel-filler lid, and
liftgate are locked using the power
door lock with any door or the
liftgate/trunk lid open, the closed
doors, fuel- filler lid, and liftgate are
locked. After that, when all doors
and the liftgate/trunk lid are closed,
all doors and the liftgate/trunk lid
are locked. However, if the key is
inside the vehicle, all doors,
fuel- filler lid, and liftgate are
automatically unlocked.
(With the advanced keyless
function)
The beep sound is heard for about
10 seconds to notify the driver that
the key has been left in the vehicle.
(Without the advanced keyless
function)
The horn sound is heard twice to
notify the driver that the key has
been left in the vehicle.
(Door unlock (control) system with
collision detection)
This system automatically unlocks the
doors, fuel-filler lid, and liftgate in
the event the vehicle is involved in an
accident to allow passengers to get
out of the vehicle immediately and
prevent being trapped inside. While
the ignition is switched ON and in
the event the vehicle receives an
impact strong enough to in flate the
air bags, all the doors, fuel- filler lid,
and liftgate are automatically
unlocked after about 6 seconds have
elapsed from the time of the
accident.
The doors, fuel-filler lid, and liftgate
may not unlock depending on how
an impact is applied, the force of the
impact, and other conditions of the
accident.
If door-related systems or the battery
is malfunctioning, the doors, fuel- filler lid, and liftgate may not
unlock depending on your vehicle
type.
Before Driving
Doors and Locks
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The liftgate can be closed when the
doors are locked with the key left in
the vehicle. However, to prevent
locking the key in the vehicle, the
liftgate can be opened by pressing
the electric liftgate opener. If the
liftgate cannot be opened despite
doing this procedure, first push the
liftgate completely closed, then press
the electric liftgate opener to fully
open the liftgate.
When the liftgate latch is released by
pressing the electric liftgate opener,
the liftgate raises slightly. If the
liftgate is not operated for a certain
period of time, the liftgate cannot be
raised.
To o p e n
Press the electric liftgate opener
again.
To c l o s e
To close the liftgate from its slightly
raised position, open it first by
pressing the electric liftgate opener,
then close it after waiting at least 1
second.
If the vehicle battery is dead or there
is a malfunction in the electrical
system and the liftgate cannot be
unlocked, the liftgate can be opened
by performing the emergency
procedure.
Refer to When Liftgate/Trunk Lid
Cannot be Opened on page 7-48.
Opening the trunk lid (4–door)
Using the trunk lid release button
Push the trunk lid release button.

Using the electric trunk lid opener
(With the advanced keyless function)
A trunk lid can also be opened while
the key is being carried.
Press the electric trunk lid opener on
the trunk lid, then raise the trunk lid
when the latch releases.

NOTE
When opening the trunk lid with the
doors locked, it may require a few
seconds for the trunk lid latch to
release after the electric trunk lid
opener is pressed.
Before Driving
Doors and Locks
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The trunk lid can be closed when the
doors are locked with the key left in
the vehicle. However, to prevent
locking the key in the vehicle, the
trunk lid can be opened by pressing
the electric trunk lid opener. If the
trunk lid cannot be opened despite
doing this procedure, press the
electric trunk lid opener to fully open
the trunk lid after pushing the trunk
lid completely closed.
If the vehicle battery is dead or there
is a malfunction in the electrical
system and the trunk lid cannot be
unlocked, the trunk lid can be
opened by performing the
emergency procedure.
Refer to When Liftgate/Trunk Lid
Cannot be Opened on page 7-48.
Closing the liftgate/trunk lid
Lower the liftgate/trunk lid slowly
using the liftgate/trunk lid grip recess,
then push the liftgate/trunk lid closed
using both hands.
Do not slam it. Pull up on the liftgate/
trunk lid to make sure it is secure.
(5–door)
(4–door)
WARNING
Do not drive the vehicle with the
liftgate-ajar warning indication
displayed :
Otherwise, the liftgate/trunk lid may
open unexpectedly and result in an
accident.
NOTE
Con firm that the liftgate/trunk lid is
securely closed.
Move the liftgate/trunk lid without
pressing the electric liftgate/trunk lid
opener to verify that the liftgate/trunk
lid has not been left ajar.
▼ Luggage Compartment
Luggage compartment cover (5-door)
WARNING
Do not place anything on top of the
cover:
Placing luggage or other cargo on top
of the luggage compartment cover is
dangerous. During sudden braking or a
collision, the cargo could become a
projectile that could hit and injure
someone.
Before Driving
Doors and Locks
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Theft-Deterrent System*
▼Theft-Deterrent System
If the theft-deterrent system detects an
inappropriate entry into the vehicle,
which could result in the vehicle or its
contents being stolen, the alarm alerts
the surrounding area of an abnormality
by sounding the horn and
flashing the
hazard warning lights.

The system will not function unless it's
properly armed. So when you leave the
vehicle, follow the arming procedure
correctly.
▼ Operation
System triggering conditions
The horn sounds intermittently and the
hazard warning lights
flash for about
30 seconds when the system is
triggered by any one of the following:
Unlocking a door with the auxiliary
key, door lock switch, or an inside
door-lock knob.
Forcing open a door, the hood or the
liftgate/trunk lid.
Opening the hood by operating the
hood release handle.
Switching the ignition ON without
using the push button start.
If the system is triggered again, the
lights and horn will activate until the
driver's door or the liftgate/trunk lid is
unlocked with the transmitter.
(With the advanced keyless function)
The lights and horn can also be
deactivated by touching the sensing
area of the door release touch sensor.
NOTE
If the battery goes dead while the
theft-deterrent system is armed, the
horn will activate and the hazard
warning lights will flash when the
battery is charged or replaced.
▼ How to Arm the System
1. Close the windows and the
moonroof* securely.
2. Switch the ignition OFF.
3. Make sure the hood, the doors, and the liftgate/trunk lid are
closed.
4. Press the lock button on the transmitter.
The hazard warning lights will flash
once.
The following method will also arm
the theft-deterrent system:
Press the door-lock switch “
”
while any door is open and then
close all of the doors.
(With the advanced keyless
function)
Touch the sensing area of the door
lock touch sensor.

The security indicator light in the
instrument cluster flashes twice per
second for 20 seconds.
5. After 20 seconds, the system is fully armed.
Before Driving
Security System
3-42*Some models.
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