2020 MAZDA MODEL 3 HATCHBACK door lock

Do not allow a child or anyone to lean over
or against the side window of a vehicle
with side and curtain air bags:
It is dangerous to allow anyone to lean
over 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 or against the front door could block
the side and curtain air bags and eliminate
the advantages of supplemental
protection. With the front air bag and the
additional side air bag that comes out of
the front seat, the rear seat is always a
better location for children. Take special
care not to allow a child to lean over 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
Passenger Occupant Classification
System)
1. Make sure the ignition is switched off.
2. Slide the seat as fa r 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 syst em for belt routing
instructions.
5. To get the retractor into the automatic locking mode, pull the shoulder belt
portion of the seat belt until the entire
length of the belt is out of the retractor.
Essential Safety Equipment
Child Restraint
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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)
*.......................................... 3-23
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............................... 3-40Modification 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 A rea............ 3-49
Overloading................................ 3-49
Driving on Uneven Road............ 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-fill
er 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 s ignal 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 fo llowing warning lights
or beeps.
Check the displaye d message for more
information and, if necessary, have the
vehicle inspected at an Authorized Mazda
Dealer, according to the indication.
KEY Warning Indicat ion/Warning Light
(Red)
Refer to KEY Warning Indication/
Warning Light (Red) on page 7-33.
Ignition Not Switched Off (STOP)
Warning Beep
Refer to Ignition Not Switched Off
(STOP) Warning Beep on page 7-42.
Key Removed from Vehicle Warning
Beep
Refer to Key Removed from Vehicle
Warning Beep on page 7-42.
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
6-28).
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.
Before Driving
Keys
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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.
▼Tr a n s m i t t e r
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 4-48.
(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
confirmation when the doors, fuel-filler
lid and liftgate 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, fuel-filler lid and
liftgate, press the lock button and the
hazard warning lights will flash once.
(With the advanced k eyless function)
A beep sound will be heard once.

To confirm that all the doors, fuel-filler lid
and liftgate 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.
Confirm that all the doors, fuel-filler lid
and liftgate are locked visually or
audibly by use of the double click.
Make sure all the doors, fuel-filler lid
and liftgate 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 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, fuel-filler lid and liftgate 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, fuel-filler lid and liftgate 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 flash for
confirmation.
The time required fo r 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 off.
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 advan ced keyless entry
*1 and
push button start system functions turn off
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/flash.
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.
Turning off 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/flash.
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 off and the ignition is
switched to off.
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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Advanced Keyless EntrySystem
*
▼Advanced Keyless Entry System
WA R N I N G
Radio waves from the key may affect
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 affect 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 foll
owing warning beeps.
Touch Sensor Inoperable Warning Beep
Refer to Touch Sensor Inoperable
Warning Beep (With the advanced
keyless function) on page 7-43.
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 7-43.
Key Left-in-vehicle Warning Beep
Refer to Key Left-in-vehicle Warning
Beep (With the advanced keyless
function) on page 7-43.
NOTE
The advanced keyless entry system
functions can be deactivated to prevent
any possible adverse effect 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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