2019 MAZDA MODEL CX-3 ECU

Liftgate
WA R N I N G
Never allow a person to ride in the luggage
compartment:
Allowing a person to ride in the luggage
compartment is dangerous. The person in
the luggage compartment could be
seriously injured or killed during sudden
braking or a collision.
Do not drive with the liftgate open:
Exhaust gas in the cabin of a vehicle is
dangerous. An open liftgate in a moving
vehicle will cause exhaust gas to be drawn
into the cabin. This gas contains CO
(carbon monoxide), which is colorless,
odorless, and highly poisonous, and it can
cause loss of consciousness and death.
Moreover, an open liftgate could cause
occupants to fall out in an accident.
Do not stack or leave loaded luggage
unsecured in the luggage compartment:
Otherwise, the luggage may move or
collapse, resulting in injury or an accident.
In addition, do not load luggage higher
than the seatbacks. It may affect the side or
rear field of view.
CAUTION
Before opening the liftgate, remove any
snow and ice accumulation on it.
Otherwise, the liftgate could close under
the weight of the snow and ice resulting
in injury.
Be careful when opening/closing the
liftgate during strong winds. If a strong
gust blows against the liftgate, it could
close suddenly resulting in injury.
 Fully open the liftgate and make sure
that it stays open. If the liftgate is only
opened partially, it could slam shut by
vibration or wind gusts resulting in
injury.
 When loading or unloading luggage in
the luggage compartment, turn off the
engine. Otherwise, you could get burned
by the heat of the exhaust gas.
 Be careful not to apply excessive force to
the damper stay on the liftgate such as
by putting your hand on the stay.
Otherwise, the damper stay may bend
and
affect the liftgate operation.
Damper stay

Do not modify or replace the liftgate
damper stay. Consult an Authorized
Mazda Dealer if a liftgate damper stay is
deformed or damaged for reasons such
as a collision or if there is some other
problem.
Before Driving
Doors and Locks
3-20
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14

Closing the liftgate
CAUTION
(With luggage board)
When closing the liftgate, return the
luggage board to its original position. If the
liftgate is closed with the luggage board
standing upright, the luggage
compartment cover could be damaged.
Luggage compartment cover
Luggage board
Lower the liftgate slow ly using the liftgate
grip recess, then push the liftgate closed
using both hands.
Do not slam it. Pull up on the liftgate to
make sure it is secure.
Liftgate grip recess
NOTE
Confirm that the liftgate is securely closed.
The liftgate, move it without pressing the
electric liftgate opener to verify that the
liftgate has not been left ajar.
▼ Luggage Compartment
Luggage compartment cover*
WA R N I N G
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. The vehicl
e has a light weight
luggage compartment cover to keep the
contents of your luggage area out of sight;
it will not retain heavy objects that are not
tied down in an accident such as a rollover.
Tie down all heavy objects, whether
luggage or cargo, using the tie down
hooks.
Make sure luggage and cargo are secured
before driving:
Not securing cargo while driving is
dangerous as it could move or be crushed
during sudden braking or a collision and
cause injury.
CAUTION
Make sure the luggage compartment cover
is firmly secured. If it is not
firmly secured, it
could unexpectedly disengage resulting in
injury.
Before Driving
Doors and Locks
3-22*Some models.
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14

3. Attach the removed cap to the innerside of the fuel-filler lid.

Fuel-filler lid
Fuel-filler cap
4. Insert the refueling nozzle all the wayand begin refueling. Pull out the
refueling nozzle a fter the refueling
stops automatically.
5. To close the fuel-filler cap, turn it clockwise until a click is heard.
6. To close, press the fuel-filler lid until it locks securely.

CAUTION
(U.S.A. and Canada)
If the check fuel cap warning light
illuminates, the fuel-filler cap may not be
properly installed. If the warning light
illuminates, park your vehicle safely off the
right-of-way, remove the fuel-filler cap and
reinstall it correctly. After the cap has been
correctly installed, the fuel cap warning
light may continue to illuminate until a
number of driving cycles have been
completed. A drive cycle consists of starting
the engine (after four or more hours with
the engine off) and driving the vehicle on
city and highway roads.
Continuing to drive with the check fuel cap
warning light illuminated could cause the
check engine light to illuminate as well.
Before Driving
Fuel and Emission
3-28
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14

Modification and Add-OnEquipment
Mazda cannot guarantee the immobilizer
and the theft-deterrent systems' operation
if the system has been modified or if any
add-on equipment has been installed.
CAUTION
To avoid damage to the vehicle, do not
modify the system or install any add-on
equipment to the immobilizer and the
theft-deterrent systems or the vehicle.
Immobilizer System
The immobilizer syste m allows the engine
to start only with a key the system
recognizes.

If someone attempts to start the engine
with an unrecognized key, the engine will
not start, thereby helping to prevent
vehicle theft.
If you have a problem with the
immobilizer system or the key, consult an
Authorized Mazda Dealer.
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.
 To avoid damage to the key, do not:
 Drop the key.
 Get the key wet.
 Expose the key to any kind of magnetic
field.
 Expose the key to high temperatures
on places such as the dashboard or
hood, under direct sunlight.
 If the engine does not start with the
correct key, and the security indicator
light keeps illuminating or flashing, the
system may have a malfunction. Consult
an Authorized Mazda Dealer.
Before Driving
Security System
3-39
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14

NOTE
•The keys carry a unique electronic code.
For this reason, and to assure your
safety, obtaining a replacement key
requires some waiting time. They are
only available through an Authorized
Mazda Dealer.
•Always keep a spare key in case one is
lost. If a key is lost, consult an
Authorized Mazda Dealer as soon as
possible.
•If you lose a key, an Authorized Mazda
Dealer will reset the electronic codes of
your remaining keys and immobilizer
system. Bring all the remaining keys to
an Authorized Mazda Dealer to reset.
Starting the vehicle with a key that has
not been reset is not possible.
▼Operation
NOTE
•The engine may not start and security
indicator light may illuminate or flash if
the key is placed in an area where it is
difficult for the system to detect the
signal, such as on the dashboard or in
the glove compartment. Move the key to
a location within
the signal range,
switch the ignition off, and then restart
the engine.
•Signals from a TV or radio station, or
from a transceiver or mobile telephone
could interfere with your immobilizer
system. If you are using the proper key
and the engine fails to start, check the
security indicator light.
Arming
The system is armed when the ignition is
switched from ON to off.
The security indicator light in the
instrument cluster fla shes every 2 seconds
until the system is disarmed.

Disarming
The system is disarmed when the ignition
is switched ON with the correct
programmed key. The security indicator
light illuminates for about 3 seconds and
then turns off. If the engine does not start
with the correct key, and the security
indicator light remains illuminated or
flashing, try the following:
Make sure the key is within the
operational range for signal transmission.
Switch the ignition off, and then restart the
engine. If the engine d oes not start after 3
or more tries, contact an Authorized
Mazda Dealer.
NOTE
•If the security indicator light flashes
continuously while you are driving, do
not shut off the engine. Go to an
Authorized Mazda Dealer and have it
checked. If the engine is shut off while
the indicator light is flashing, you will
not be able to restart it.
•Because the electronic codes are reset
when the immobilizer system is repaired,
the keys are needed. Make sure to bring
all the keys to an Authorized Mazda
Dealer so that they can be programmed.
Before Driving
Security System
3-40
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14

Theft-Deterrent System*
If the theft-deterrent system detects an
inappropriate entry in to the vehicle, which
could result in the veh icle 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.
•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 activat e until the driver's
door or the liftgate is unlocked with the
transmitter.
(With the advanced keyless function)
The lights and horn can also be
deactivated by pressing the request switch
on a door.
NOTE
•The liftgate does not open while the
theft-deterrent system is operating.
•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 are closed.
4. Press the lock button on the transmitter or lock the driver's door from the
outside with the auxiliary key.
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)
Press a request switch.

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
*Some models.3-41
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14

NOTE
•The theft-deterrent system can also be
armed by activating the auto relock
function with all the doors, the liftgate
and the hood closed.
Refer to Transmitter on page 3-4.
•The system will disarm if one of the
following operations takes place within
20 seconds after pressing the lock
button:
•Unlocking any door.
•Opening any door.
•Opening the hood.
•Switching the ignition ON.
•(With the advanced keyless function)
Pressing the electric liftgate opener
while the key is being carried.
To rearm the system, do the arming
procedure again.
•When the doors are locked by pressing
the lock button on the transmitter or
using the auxiliary key while the
theft-deterrent system is armed, the
hazard warning lights will flash once to
indicate that the system is armed.
▼ To Turn Off an Armed System
An armed system can be turned off using
any one of the following methods:
•Pressing the unlock button on the
transmitter.
•Starting the engine with the push button
start.
•(With the advanced keyless function)
•Pressing a request switch on the
doors.
The hazard warning lights will flash twice.
NOTE
When the doors are unlocked by pressing
the unlock button on the transmitter while
the theft-deterrent system is turned off, the
hazard warning lights will flash twice to
indicate that the system is turned off.
▼ To Stop the Alarm
A triggered alarm can be turned off using
any one of the following methods:
•Pressing the unlock button on the
transmitter.
•Starting the engine w
ith the push button
start.
•(With the advanced keyless function)
•Pressing a request switch on the
doors.
•Pressing the electric liftgate opener
while the key is being carried.
The hazard warning ligh ts will flash twice.
Before Driving
Security System
3-42
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14

Hazardous Driving
WA R N I N G
Be extremely careful if it is necessary to
downshift on slippery surfaces:
Downshifting into lower gear while driving
on slippery surfaces is dangerous. The
sudden change in tire speed could cause
the tires to skid. This could lead to loss of
vehicle control and an accident.
When driving on ice or in water, snow,
mud, sand, or similar hazards:
•Be cautious and allow extra distance for
braking.
•Avoid sudden braking and sudden
maneuvering.
•Do not pump the brakes. Continue to
press down on the brake pedal.
Refer to Antilock Brake System (ABS)
on page 4-67.
•If you get stuck, select a lower gear and
accelerate slowly. Do not spin the front
wheels.
•For more traction in starting on slippery
surfaces such as ice or packed snow, use
sand, rock salt, chains, carpeting, or
other nonslip material under the front
wheels.
NOTE
Use snow chains only on the front wheels.
Floor Mat
We recommend the use of Genuine
Mazda floor mats.
WA R N I N G
Make sure the floor mats are hooked on the
retention pins to prevent them from
bunching up under the foot pedals:
Using a floor mat that is not secured is
dangerous as it will interfere with the
accelerator and brake pedal operation,
which could result in an accident.
Do not install two floor mats, one on top of
the other, on the driver's side:
Installing two floor mats, one on top of the
other, on the driver's side is dangerous as
the retention pins can only keep one floor
mat from sliding forward.
Loose floor mat(s) will interfere with the
foot pedals and could result in an accident.
If using an all-weather mat for winter use
always remove the original floor mat.
When setting a floor mat, position the
floor mat so that its grommets are inserted
over the pointed end of the retention posts.
Before Driving
Driving Tips
3-44
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14