light MAZDA MODEL 3 HATCHBACK 2020 (in English) Workshop Manual

▼Rearview Mirror
WA R N I N G
Do not stack cargo or objects higher than
the seatbacks:
Cargo stacked higher than the seatbacks is
dangerous. It can block your view in the
rearview mirror, which might cause you to
hit another car when changing lanes.
Rearview mirror adjustment
Before driving, adjust
the rearview mirror
to center on the scene through the rear
window.

NOTE
For the manual day/night mirror, perform
the adjustment with the day/night lever in
the day position.
Reducing glare from headlights
Manual day/night mirror
Push the day/night lever forward for day
driving. Pull it back to reduce glare of
headlights from vehicles at the rear.

1. Day/Night lever
2. Night
3. Day

Auto-dimming mirror
The auto-dim ming mirror automatically
reduces the glare of headlights from
vehicles at the rear when the ignition is
switched ON.

(With Homelink wireless control
system)
Press the ON/OFF button (
) to cancel the
auto-dimming function. The indicator light
will turn off.
Before Driving
Mirrors
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To reactivate the auto-dimming function,
press the ON/OFF button (
). The
indicator light will illuminate.
1. ON/OFF button
2. Indicator light

NOTE
Do not use glass cleaner or suspend
objects on or around the light sensor.
Otherwise, light sensor sensitivity will
be affected and may not operate
normally.
1. Light sensor

(With Homelink wireless control
system)
For information regarding the 3 buttons
(
,,) on the auto-dimming mirror.
Refer to HomeLink Wireless Control
System on page 4-58.
The auto-dimming function is canceled
when the ignition is switched ON and
the shift lever/selector lever is in the R
position.
Before Driving
Mirrors
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Power Windows
▼Power Windows
The windows can be opened/closed by
operating the power window switches.
WA R N I N G
Make sure the opening is clear before
closing a window:
Closing a power window is dangerous. A
person's hands, head, or even neck could
be caught by the window and result in
serious injury or even death. This warning
applies especially to children.
Never allow children to play with power
window switches:
Power window switches that are not locked
with the power window lock switch would
allow children to operate power windows
unintentionally, which could result in
serious injury if a child's hands, head or
neck becomes caught by the window.
Make sure nothing bloc ks the window just
before it reaches the fully closed position or
while fully holding up the power window
switch:
Blocking the power window just before it
reaches the fully closed position or while
fully holding up the power window switch
is dangerous.
In this case, the jam-safe function may not
prevent the window from closing all the
way. If fingers are caught, serious injuries
could occur.
Do not let a child put a hand or head out of
the window while driving the vehicle:
If the person's hand or head hits something
outside the vehicle, or sudden braking is
applied, it could result in serious injury or
death.
NOTE
When driving with only 1 of the rear
windows open, your ears might experience
a resonating sound. However, this does not
indicate a problem. The sound can be
reduced by slightly opening a front
window or by changing the size of the rear
window opening.
Before Driving
Windows
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Modification and Add-OnEquipment
▼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
▼ 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 pr
oblem 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
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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 indica
tor 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 o r 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.
Before Driving
Security System
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Theft-Deterrent System*
▼Theft-Deterrent System
If the theft-deterrent system detects an
inappropriate entry int
o 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 sys
tem 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 wh en 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
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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 are locked by pressing
the lock button on the transmitter 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)
Touching the sensing area of the door
release touch sensor.
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 S t o p t h e A l a r m
A triggered alarm can be turned off using
any one of the following methods:
Pressing the unlock button or the trunk
button (4–door) on the transmitter.
Starting the engine with the push button
start.
(With the advanced keyless function)
Touching the sensing area of the door
release touch sensor.
Pressing the electric liftgate/trunk lid
opener while the key is being carried.
The hazard warning lights will flash twice.
Before Driving
Security System
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Floor Mat
▼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.
Rocking the Vehicle
▼Rocking the Vehicle
WA R N I N G
Do not spin the wheels at more than 56
km/h (35 mph), and do not allow anyone
to stand behind a wheel when pushing the
vehicle:
When the vehicle is stuck, spinning the
wheels at high speed is dangerous. The
spinning tire could
overheat and explode.
This could cause serious injuries.
CAUTION
Too much rocking may cause engine
overheating, transmission failure, and tire
damage.
If you must rock the vehicle to free it from
snow, sand or mud, depress the accelerator
slightly and slowly mo ve the shift lever/
selector lever from 1 (D) to R position.
Before Driving
Driving Tips
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Winter Driving
▼Winter Driving
Carry emergency gear, including tire
chains, window scraper, flares, a small
shovel, jumper cables
, and a small bag of
sand or salt.
Ask an Authorized Maz da Dealer to check
the following:
Have the proper ratio of antifreeze in the
radiator.
Refer to Engine Coolant on page 6-17.
Inspect the ba ttery and its cables. Cold
reduces battery capacity.
Use an engine oil appropriate for the
lowest ambient temperatures that the
vehicle will be driven in (page 6-15).
Inspect the ignition system for damage
and loose connections.
Use washer fluid made with
antifreeze―but do not use engine
coolant antifreeze for washer fluid (page
6-19).
NOTE
Remove snow before driving. Snow left
on the windshield is dangerous as it
could obstruct vision.
Do not apply excessive force to a
window scraper when removing ice or
frozen snow on the mirror glass and
windshield.
Never use warm or hot water for
removing snow or ice from windows and
mirrors as it could result in the glass
cracking.
Drive slowly. Braking performance can
be adversely affected if snow or ice
adheres to the brake components. If this
situation occurs, drive the vehicle
slowly, releasing the accelerator pedal
and lightly applying the brakes several
times until the brake performance
returns to normal.
▼ Snow Tires
Use snow tires on all 4 wheels
Do not go faster than 120 km/h (75 mph)
while driving with snow tires. Inflate snow
tires 30 kPa (0.3 kgf/cm
2, 4.3 psi) more
than recommended on the tire pressure
label (driver's door frame), but never more
than the maximum cold-tire pressure
shown on the tires.

Mexico
The vehicle is origin ally 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.
Except Mexico
The vehicle is origina lly 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.
Before Driving
Driving Tips
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Driving In Flooded Area
▼Driving In Flooded Area
WA R N I N G
Dry off brakes that have become wet by
driving slowly, releasing the accelerator
pedal and lightly applying the brakes
several times until the brake performance
returns to normal:
Driving with wet brakes is dangerous.
Increased stopping distance or the vehicle
pulling to one side when braking could
result in a serious accident. Light braking
will indicate whether the brakes have been
affected.
CAUTION
Do not drive the vehicle on flooded roads
as it could cause short circuiting of
electrical/electronic parts, or engine
damage or stalling from water absorption.
If the vehicle has been immersed in water,
consult an Authorized Mazda Dealer.
Overloading
▼Overloading
WA R N I N G
Be careful not to overload your vehicle:
The gross axle weight rating (GAWR) and
the gross vehicle weight rating (GVWR) of
the vehicle are on the Motor Vehicle Safety
Standard Label on the driver's door frame.
Exceeding these ratings can cause an
accident or vehicle damage. You can
estimate the weight of the load by
weighing the items (or people) before
putting them in the vehicle.
Before Driving
Driving Tips
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