ECU MAZDA MODEL 3 5-DOOR 2017 Owner's Manual

3–21
Before Driving
Doors and Locks
Rear Door Child Safety Locks
These locks are intended to help prevent
children from accidentally opening the
rear doors. Use them on both rear doors
whenever a child rides in the rear seat of
the vehicle.
If you slide the child safety lock to the
lock position before closing that door, the
door cannot be opened from the inside.
The door can only be opened by pulling
the outside handle.
LockUnlock
Liftgate/Trunk Lid
WARNING
Never allow a person to ride in the
luggage compartment/trunk:
Allowing a person to ride in the
luggage compartment/trunk is
dangerous. The person in the luggage
compartment/trunk could be seriously
injured or killed during sudden braking
or a collision.
Do not drive with the liftgate/trunk lid
open: Exhaust gas in the cabin of a vehicle is
dangerous. An open liftgate/trunk lid
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/trunk lid 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.
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3–24
Before Driving
Doors and Locks
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.
 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 7-44.
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)
Liftgate grip
recess
(4–door)
Trunk lid grip recess
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3–25
Before Driving
Doors and Locks
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. The vehicle 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. The luggage compartment can be accessed
by opening the liftgate when the straps are
attached to the sides of the liftgate.
Strap
Removing the cover
This cover can be removed for more room.
1. Remove the straps from the hooks.
2. Lift the end of the luggage
compartment cover a little, pull it
outward, and remove it from the pins.
Pin
Pin
3. Lift the front end of the luggage
compartment cover and remove it.
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3–31
Before Driving
Fuel and Emission
Fuel-Filler Lid and Cap
WARNING
When removing the fuel-filler cap,
loosen the cap slightly and wait for any
hissing to stop, then remove it:Fuel spray is dangerous. Fuel can
burn skin and eyes and cause illness
if ingested. Fuel spray is released
when there is pressure in the fuel tank
and the fuel-filler cap is removed too
quickly.
Before refueling, stop the engine, and
always keep sparks and flames away
from the filler neck: Fuel vapor is dangerous. It could be
ignited by sparks or flames causing
serious burns and injuries.
Additionally, use of the incorrect fuel-
filler cap or not using a fuel-filler cap
may result in a fuel leak, which could
result in serious burns or death in an
accident.
Do not continue refueling after the fuel
pump nozzle shuts off automatically: Continuing to add fuel after the
fuel pump nozzle has shut off
automatically is dangerous because
overfilling the fuel tank may cause
fuel overflow or leakage. Fuel overflow
and leakage could damage the vehicle
and if the fuel ignites it could cause a
fire and explosion resulting in serious
injury or death.
CAUTION
(U.S.A. and Canada)
Always use only a genuine Mazda fuel-
filler cap or an approved equivalent,
available at an Authorized Mazda
Dealer. The wrong cap can result in
a serious malfunction of the fuel and
emission control systems. It may also
cause the check engine light in the
instrument cluster to illuminate.
Fuel-Filler Lid
To open, pull the remote fuel-filler lid
release.
To close, press the fuel-filler lid until it
locks securely.
Remote fuel-filler lid release
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3–42
Before Driving
Security System
Modification and Add-On
Equipment
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 system 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.
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3–43
Before Driving
Security System
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 flashes 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 does 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 electr onic 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.
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3–44
Before Driving
Security System
*Some models.
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 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 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
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
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.
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3–45
Before Driving
Security System
NOTE
 The theft-deterrent system can also be
armed by activating the auto relock
function with all the doors, the liftgate/
trunk lid and the hood closed.
Refer to Transmitter on page 3-5. 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.
To rearm the system, do the arming
procedure again. When the doors ar e 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 with the push button
start. (With the advanced keyless function)
 Pressing a request switch on the doors. Pressing the electric liftgate/trunk lid
opener while the key is being carried.
The hazard warning lights will flash twice.
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3–47
Before Driving
Driving Tips
Hazardous Driving
WARNING
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 4-68. 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.
WARNING
Make sure the floor mats are secured
with the grommets or the retainers to
prevent them from bunching up under
the foot pedals (Driver's side): Using a floor mat that is not secured is
dangerous as it will interfere with the
accelerator and brake pedal operation
(driver's side), which could result in an
accident.
Only use a floor mat which conforms
to the shape of the floor on the driver's
side and make sure it is oriented
correctly.
Secure the floor mat using the
grommets or retainers.
There are various ways to secure floor
mats depending on the type used,
therefore secure the mat according to
the type.
After installing the floor mat, make
sure that it does not slide from side
to side or back and forth, and that
there is sufficient clearance with the
accelerator and brake pedals on the
driver's side.
After removing the floor mat for
cleaning or some other reason, always
securely reinstall it while paying
attention to the precautions just
mentioned.
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3–50
Before Driving
Driving Tips
Except Mexico (18–inch wheel vehicle)
The vehicle is originally equipped with
all season radials designed to be used all
year around. In some extreme climates you
may find it necessary to replace them with
snow tires during the winter months to
further improve traction on snow and ice
covered roads.
Mexico (18–inch wheel vehicle)
The vehicle is originally equipped with
summer tires designed for optimum
traction on wet and dry roads. If your
vehicle is to be used on snow and ice
covered roads, Mazda recommends that
you replace the tires originally equipped
on your vehicle with snow tires during the
winter months.
WARNING
Use only the same size and type tires
(snow, radial, or non-radial) on all four
wheels:Using tires different in size or type is
dangerous. Your vehicle's handling
could be greatly affected and result in
an accident.
CAUTION
Check local regulations before using
studded tires.
Tire Chains
Check local regulations before using tire
chains.
CAUTION
 Chains may a ffect handling. Do not go faster than 50 km/h (30 mph)
or the chain manufacturer's
recommended limit, whichever is lower.
 Drive carefully and avoid bumps, holes,
and sharp turns. Avoid locked-wheel braking. Do not use chains on a temporary spare
tire; it may result in damage to the
vehicle and to the tire.
 Do not use chains on roads that are free
of snow or ice. The tires and chains could
be damaged.
 Chains may scr atch or chip aluminum
wheels.
NOTE
The tire pressure monitoring system may
not function correctly when using tire
chains.
Install the chains on the front tires only.
Do not use chains on the rear tires.
Please consult an Authorized Mazda
Dealer.
Installing the chains
1. If your vehicle is equipped with wheel
covers remove them, otherwise the
chain bands will scratch them.
2. Secure the chains on the front tires as
tightly as possible.
Always follow the chain manufacturer's
instructions.
3. Retighten the chains after driving
1/2—1 km (1/4—1/2 mile).
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