2021 MAZDA MODEL 3 HATCHBACK door lock

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 inflation 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.
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.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.
Front Passenger's Seat Child-Restraint
System Installation (With Front
Pa s s e n g e r O cc u p a n t Classification
System)
1. Make sure the ignition is switched
off.
2. Slide the seat as far back as possible.
3. 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.
4. Place the child-restraint system on
the seat without putting your
weight on the seat and fasten the
seat belt. See the manufacturer's
instructions on the child-restraint
system for belt routing instructions.
Essential Safety Equipment
Child Restraint
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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.
Do not sit too close to the driver and
front passenger air bags:
Sitting too close to the driver and front
passenger air bag modules or placing
hands or feet on them is extremely
dangerous. The driver and front
passenger air bags inflate with great
force and speed. Serious injuries could
occur if someone is too close. The
driver should always hold onto only the
rim of the steering wheel. The front
seat passenger should keep both feet
on the floor. Front seat occupants
should adjust their seats as far back as
possible and always sit upright against
the seatbacks with seat belts worn
properly.
Sit in the center of the seat and wear
seat belts properly:
Sitting too close to the side air bag
modules or placing hands on them, or
sleeping up against the door or
hanging out the windows is extremely
dangerous. The side and curtain air
bags in flate with great force and speed
directly expanding along the door on
the side the car is hit. Serious injury
could occur if someone is sitting too
close to the door or leaning against a
window, or if rear seat occupants grab
the sides of the front seatbacks. Give
the side and curtain air bags room to
work by sitting in the center of the seat
while the vehicle is moving with seat
belts worn properly.
Do not attach objects on or around
the area where air bags deploy:
Attaching objects to the air bags or
placing something in the area where
the air bags deploy is dangerous. In an
accident, an object could interfere with
air bag in flation and injure the
occupants. Furthermore, the bag could
be damaged causing gases to release.
Always keep the deployment area of
the air bag modules free of any
obstructions.
For example, you should not do any of
the following as it may interfere with
air bag deployment.
 Do not put a covering on or lean
anything against areas such as the
dashboard and lower portion of the
instrument panel that blocks the
passenger front air bag and knee air
bags.
 Do not use seat covers on the front
seats and rear seats equipped with
in-seat side air bags.
 Do not hang any backpacks, bags or
pouches that cover the sides of the
seats that block the side air bags.
Essential Safety Equipment
SRS Air Bags
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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.................3-19
Inside Trunk Release Lever (4-
door)
*................................. 3-24
Fuel and Emission................... 3-25 Fuel and Engine Exhaust
Precautions......................... 3-25
Fuel-Filler Lid and Cap..........3-27
Mirrors.................................. 3-30 Mirrors................................3-30
Windows............................... 3-34 Power Windows...................3-34
Moonroof*.......................... 3-37
Security System.......................3-40 Modi fication and Add-
On Equipment..................... 3-40
Immobilizer System..............3-40
Theft-Deterrent System
*........3-42
Driving Tips............................ 3-44 Break-In Period.................... 3-44
Saving Fuel and Protection of the
Environment........................ 3-44
Hazardous Driving............... 3-45
Floor Mat............................ 3-46
Rocking the Vehicle..............3-46
Winter Driving..................... 3-47
Driving In Flooded Area........3-49
Overloading........................ 3-49
Driving on Uneven Road.......3-50
Turbocharger Information
(SKYACTIV -G 2.5T).............. 3-50
Towing.................................. 3-51 Trailer Towing...................... 3-51
Recreational Towing............. 3-51
*Some models.3-1
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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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▼Transmitter
1. Operation indicator light
2. Lock button (
)
3. Unlock button (
)
4. Trunk button (4–door) (
)
5. Panic button (
)
NOTE
The headlights turn on/o ff by
operating the transmitter. Refer to
Leaving Home Light on page 4-50.
(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 3-42.
(With the advanced keyless
function)
A beep sound can be heard for
con firmation when the doors,
liftgate, and fuel-filler lid are locked/
unlocked using the key. If you prefer,
the beep sound can be turned o ff.
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 con firm 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
If the lock button is pressed with any
door or liftgate/trunk lid open, any
closed door can be locked. Close
any open door and liftgate/trunk lid
to lock.
Con firm that all the doors, liftgate,
and fuel- filler lid are locked visually
or audibly by use of the double click.
Make sure all the doors, liftgate, and fuel- filler lid are locked after pressing
the button.
Before Driving
Keys
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(With theft-deterrent system)
If the lock button is pressed with all
the doors and liftgate closed, the
hazard warning lights will flash and
the theft-deterrent system is armed.
Unlock button
To unlock the driver's door and the
fuel- filler lid, press the unlock button
and the hazard warning lights will flash
twice.
(With the advanced keyless function)
A beep sound will be heard twice.

To unlock the other doors and liftgate,
press the unlock button again within 5
seconds and two more beep sounds
will be heard.
NOTE
The system can be set to unlock all
the doors, liftgate, and fuel-filler lid
when pressing the unlock button
once.
Refer to the Settings section in the
Mazda Connect Owner's Manual.
(Auto re-lock function)
After unlocking with the key, all the
doors, liftgate, and fuel-filler lid will
automatically lock if any of the
following operations are not
performed within about 60 seconds.
If your vehicle has a theft-deterrent
system, the hazard warning lights will fl ash for con firmation.
The time required for the doors to
lock automatically can be changed.
Refer to the Settings section in the
Mazda Connect Owner's Manual.
A door or the liftgate/trunk lid is
opened.
The ignition is switched to any
position other than off .
(With theft-deterrent system)
When the doors are unlocked by
pressing the unlock button on the
key while the theft-deterrent system
is turned off, the hazard warning
lights will flash twice to indicate that
the system is turned o ff.
Trunk button (4–door)
To open the trunk lid, press and hold
the trunk button until the trunk lid
opens.
Panic button
If you witness from a distance
someone attempting to break into or
damage your vehicle, press and hold
the panic button to activate the
vehicle's alarm. Call emergency
services if necessary.
NOTE
The panic button will work whether
any door or the liftgate/trunk lid is
open or closed.
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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With the advanced keyless function

1. Interior antenna
2. Operational range

Without the advanced keyless
function

1. Interior antenna
2. Operational range

NOTE
The engine may not start if the key is
placed in the following areas:
Around the dashboardIn the storage compartments such as
the glove compartment or the center
console
On the rear parcel shelf (4–door)
▼Key Suspend Function
If a key is left in the vehicle, the
functions of the key left in the vehicle
are temporarily suspended to prevent
theft of the vehicle.
To restore the functions, press the
unlock button on the
functions-suspended key in the
vehicle.
Before Driving
Keys
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