light MAZDA MODEL 3 HATCHBACK 2021 Workshop Manual

▼Rearview Mirror
WARNING
Do not stack cargo or objects higher
than the seatbacks:
Cargo stacked higher than the
seatbacks is danger
ous. 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-dimming mirror
automatically reduces the glare of
headlights from vehicles at the rear
when the ignition is switched ON.

Before Driving
Mirrors
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(With ON/OFF button)
Press the ON/OFF button (
) to cancel
the auto-dimming function. The
indicator light will turn off .
To r e a c t i v a t e t h e a u t o - d i m m i n g
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 aff ected 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 4-60.
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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Powe r Wi n d ow s
▼Powe r Wi n d ow s
The windows can be opened/closed
by operating the power window
switches.
WARNING
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 blocks 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.
▼ Opening/Closing Windows
The window opens while the switch is
pressed and it closes while the switch
is pulled up with the ignition switched
ON. Do not open or close 3 or more
windows at the same time.
The front passenger's window and rear
windows can be opened/closed when
the power window lock switch on the
driver's door is in the unlocked
position. Keep this switch in the locked
position while children are in the
vehicle.

Before Driving
Windows
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Modification and
Add-On Equipment
▼ Modi
fication and Add-On
Equipment
Mazda cannot guarantee the
immobilizer and the theft-deterrent
system's operation if the system has
been modi fied 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 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 modi fications 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, 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 di fficult 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 o ff.
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 illu minates for about 3
seconds and then turns o ff.
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 o ff,
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 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 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 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.
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 Tu r n O
ff an Armed System
An armed system can be turned o ff
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 o ff, the hazard
warning lights will flash twice to
indicate that the system is turned o ff.
▼ To S t o p t h e A l a r m
A triggered alarm can be turned o
ff
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.
WARNING
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
fl oor mat so that its grommets are
inserted over the pointed end of the
retention posts.
Rocking the Vehicle
▼ Rocking the Vehicle
WARNING
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 move
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 Mazda Dealer to
check the following:
Have the proper ratio of antifreeze in
the radiator.
Refer to Engine Coolant on page
6-20.
Inspect the battery 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
6-17).
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 6-22).
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 a ffected 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.
In
flate 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 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.
Except Mexico
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.
Before Driving
Driving Tips
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Driving In Flooded Area
▼Driving In Flooded Area
WARNING
Dry o
ff 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
a ff ected.
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
WARNING
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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