battery MAZDA MODEL 3 HATCHBACK 2021 Owner's Guide

Please note that the TPMS is not a
substitute for proper tire
maintenance, and it is the driver's
responsibility to maintain correct tire
pressure, even if under-inflation has
not reached the level to trigger
illumination of the TPMS low tire
pressure telltale.
Your vehicle has also been equipped
with a TPMS malfunction indicator to
indicate when the system is not
operating properly.
The TPMS malfunction indicator is
combined with the low tire pressure
telltale. When the system detects a
malfunction, the telltale will flash for
approximately one minute and then
remain continuously illuminated.
This sequence will continue upon
subsequent vehicle start-ups as long
as the malfunction exists. When the
malfunction indicator is illuminated,
the system may not be able to detect
or signal low tire pressure as
intended. TPMS malfunctions may
occur for a variety of reasons,
including the installation of
replacement or alternate tires or
wheels on the vehicle that prevent
the TPMS from functioning properly.
Always check the TPMS malfunction
telltale after replacing one or more
tires or wheels on your vehicle to
ensure that the replacement or
alternate tires and wheels allow the
TPMS to continue to function
properly.
 To avoid false readings, the system
samples for a little while before
indicating a problem. As a result it
will not instantaneously register a
rapid tire de flation or blow out.▼ If there is a problem with the Tire
Pressure Monitoring System
(TPMS)
If the TPMS warning light
flashes, there
may be a problem with the system.
Consult an Authorized Mazda Dealer
to have the system inspected.
Refer to Tire Pressure Monitoring
System (TPMS) Warning Indication/
Warning Light (Flashing) on page
7-33.
In the following cases, the system
cannot recognize the tire pressures
correctly and the TPMS warning light
may flash.
There is equipment or a device
nearby emitting radio signals the
same as a tire pressure sensor.
A metallic object such as a
non-genuine electronic device is
installed near the center of the
dashboard (obstructs the radio
signals from the tire pressure sensors
to the receiver).
A device such as one of the following
is used in the cabin.
Electronic devices such as a
computer.
Converter devices such as a
DC -AC converter.
There is a large accumulation of
snow or ice around the vehicle tires.
The battery in a tire pressure sensor
is dead.
A wheel not equipped with a tire
pressure sensor is used.
Tires employing steel in the sidewall
of the tire are installed.
Tire chains are used.
When Driving
Tire Pressure Monitoring System (TPMS)
4-220
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

Operating Tips
▼Operating Tips
Operate the climate control system
with the engine running.
To prevent the battery from being
discharged, do not leave the fan
control switch on for a long period of
time with the ignition switched ON
when the engine is not running.
Clear all obstructions such as leaves,
snow and ice from the hood and the
air inlet in the cowl grille to improve
the system e
fficiency.
Use the climate control system to
defog the windows and dehumidify
the air.
The recirculate mode should be used
when driving through tunnels or
while in a
traffic jam, or when you
would like to shut o ff outside air for
quick cooling of the interior.
Use the outside air position for
ventilation or windshield defrosting.
If the vehicle has been parked in
direct sunlight during hot weather,
open the windows to let warm air
escape, then run the climate control
system.
(With A/C switch)
Run the air conditioner about 10
minutes at least once a month to
keep internal parts lubricated.
Have the air conditioner checked
before the weather gets hot. Lack of
refrigerant may make the air
conditioner less e fficient.
The refrigerant specifications are
indicated on a label attached to the
inside of the engine compartment. If
the wrong type of refrigerant is used,
it could result in a serious
malfunction of the air conditioner.
Consult a professional, government certi fied repairer for the inspection
or repair because a special device is
required for the air conditioner
maintenance.
For details, consult an Authorized
Mazda Dealer.
1. Label
Interior Features
Climate Control System
5-2
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

Do not adjust a mobile device or a similar product while driving the vehicle:
Adjusting a mobile device or a similar produ ct while driving the vehicle is dangerous
as it could distract your attention from the vehicle operation which could lead to a
serious accident. Always adjust a mobile device or a similar product while the
vehicle is stopped.
CAUTION
For the purposes of safe driving, adjust the audio volume to a level that allows you
to hear sounds outside of the vehicle including car horns and particularly emergency
vehicle sirens.
NOTE
Do not use Mazda Connect for a long ti me with the engine stopped. Otherwise,
the battery power could be depleted.
If a mobile phone or CB radio is used in or near the vehicle, it could cause noise to
occur from the audio system. However, this does not indicate a problem.
Interior Features
Mazda Connect
5-18
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

Sunvisors
▼Sunvisors
Lower the sunvisor to block sunlight
from the front.
To block sunlight from the side, lower
and unhook the sunvisor, and then
swing it to the side.
▼
Side Extension Sunvisors*
The visor extender extends the
sunvisor's range of sun shading.
To use, pull it out.
CAUTION
When moving the sunvisor, retract the
visor extender to its original position.
Otherwise, the visor extender could hit
the rearview mirror.
▼ Va n i t y M i r ro r s
To use the vanity mirror, lower the
sunvisor.
If your vehicle is equipped with a
vanity mirror light, it will illuminate
when you open the cover.
The vanity mirror will only illuminate in
the tilt range shown in the figure.

1. Vanity mirror light
2. On
3. O
ff

NOTE
If a vanity mirror light is left on with the
ignition switched OFF, the light is
turned o ff automatically to prevent the
battery from being discharged.

The vanity mirror light can be turned
on again by doing any of the following
operations:
Opening/closing any door.Unlocking any door.Switching the ignition to ACC or ON.Switching an overhead light/front
map light on.
Interior Features
Interior Equipment
5-38*Some models.
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

Interior Lights
▼Interior Lights
NOTE
Do not leave the lights on for long
periods while the engine is turned o
ff.
Otherwise the battery power could be
depleted.
Overhead lights
Front
1. Indicator light

Switch Overhead Lights
ON/OFFPress the switch to turn it on.
Press the switch again to turn o
ff
the lights.
Switch Overhead Lights
DOOR OFFThe door interlock can be switch-
ed ON/OFF.
When the door interlock is OFF,
the indicator light in the switch
turns on.

Door interlock ON (indicator
light in switch is o
ff)
The lights turn on when any of
the doors is opened.
The lights turn on/o ff in con-
junction with the illuminated
entry system.
Door interlock OFF (indicator
light in switch is on)
The lights do not turn on even
if any of the doors is opened.
The lights do not turn on/off in
conjunction with the illuminat-
ed entry system.

Rear
NOTE
The rear overhead light also turn on
and off when the front overhead light
switch is operated.
Interior Features
Interior Equipment
5-39
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

Map lights
Press the switch to illuminate the map
lights, and then press the switch again
to turn them off.
NOTE
The map lights will not turn o ff even if
the switch is pressed in the following
cases:
The overhead lights turn on by
operating the overhead light
ON/OFF switch (
).The overhead lights turn on in
conjunction with a door opening/
closing.
The illuminated entry system is on.
Trunk light (4–door)
The trunk light is on when the trunk is
open and o ff when it is closed.
NOTE
Do not leave the trunk open for long
periods while the engine is turned o ff.
Otherwise the battery power could be
depleted.
Luggage compartment light (5–door)
The luggage compartment light is on
when the liftgate is open and o ff when
it is closed.
NOTE
Do not leave the liftgate open for long
periods while the engine is turned o ff.
Otherwise the battery power could be
depleted.
Interior Features
Interior Equipment
5-40
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

▼Illuminated Entry System
The overhead lights turn on when any
of the following operations is done
with the overhead light switch in the
DOOR position.
The driver's door is unlocked with
the ignition is switched OFF.
The ignition is switched OFF with all
doors closed.
NOTE
The illumination time di
ffers
depending on the operation.
The vehicle is equipped with a
battery saver. If an interior light is left
on with the ignition switched OFF,
the light turns o ff automatically after
a certain period of time has passed
to prevent battery depletion.
The operation of the illuminated
entry system can be changed.
Refer to the Settings section in the
Mazda Connect Owner's Manual.
The illuminated entry system does
not operate in conjunction with the
overhead lights when the overhead
lights are turned on using the
overhead light ON/OFF switch.
Accessory Socket
▼ Accessory Socket
Only use genuine Mazda accessories
or the equivalent requiring no greater
than 120 W (DC 12 V, 10 A).
The accessory socket can be used
regardless of whether the ignition is on
or o
ff.


CAUTION
 To prevent accessory socket damage
or electrical failure, pay attention to
the following:
 Do not use accessories that require
more than 120 W (DC 12 V, 10 A).
 Do not use accessories that are not
genuine Mazda accessories or the
equivalent.
 Close the cover when the
accessory socket is not in use to
prevent foreign objects and liquids
from getting into the accessory
socket.
 Correctly insert the plug into the
accessory socket.
 Do not insert the cigarette lighter
into the accessory socket.
 Noise may occur on the audio
playback depending on the device
connected to the accessory socket.
Interior Features
Interior Equipment
5-41
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

Depending on the device connected
to the accessory socket, the vehicle's
electrical system may be aff ected,
which could cause the warning light
to illuminate. Disconnect the
connected device and make sure
that the problem is resolved. If the
problem is resolved, disconnect the
device from the socket and switch
the ignition o ff. If the problem is not
resolved, consult an Authorized
Mazda Dealer.
NOTE
To prevent discharging of the battery,
do not use the socket for long periods
with the engine o ff or idling.
Connecting the accessory socket
1. Open the lid.
2. Pass the connection plug cord through the cutout of the console
and insert the plug into the
accessory socket.

1. Plug
Cup Holder
▼ Cup Holder
WARNING
Never use a cup holder to hold hot
liquids while the vehicle is moving:
Using a cup holder to hold hot liquids
while the vehicle is moving is
dangerous. If the contents spill, you
could be scalded.
Do not put anything other than cups
or drink cans in cup holders:
Putting objects other than cups or
drink cans in a cup holder is
dangerous.
During sudden braking or
maneuvering, occupants could be hit
and injured, or objects could be
thrown around the vehicle, causing
interference with the driver and the
possibility of an accident. Only use a
cup holder for cups or drink cans.
Interior Features
Interior Equipment
5-42
Mazda3_8JM2-EA
-20H_Edition1_new 2020-7-10 17:21:34

6Maintenance and Care
How to keep your Mazda in top condition.
Essential Information................. 6-2 Introduction.......................... 6-2
Scheduled Maintenance............ 6-4 Scheduled Maintenance......... 6-4
Owner Maintenance............... 6-12 Owner Maintenance
Precautions......................... 6-12
Hood.................................. 6-13
Engine Compartment
Overview............................ 6-15
Engine Oil........................... 6-17
Engine Coolant.................... 6-20
Brake/Clutch Fluid............... 6-21
Washer Fluid....................... 6-22
Body Lubrication.................. 6-23
Wiper Blades....................... 6-23
Battery................................ 6-29
Key Battery Replacement...... 6-31
Tires.................................... 6-33
Light Bulbs...........................6-37
Fuses.................................. 6-40
Appearance Care.................... 6-48 Exterior Care....................... 6-48
Interior Care........................ 6-54
6-1
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

NOTE
If you elect to perform maintenance
yourself or have your vehicle serviced
at a location other than an Authorized
Mazda Dealer, Mazda requires that all
fluids, parts and materials must meet
Mazda standards for durability and
performance as described in this
manual.

Claims against the warranty resulting
from lack of maintenance, as opposed
to defective materials or authorized
Mazda workmanship, will not be
honored.

Any auto repair shop using parts
equivalent to your Mazda's original
equipment may perform maintenance.
But we recommend that it always be
done by an Authorized Mazda Dealer
using genuine Mazda parts.
Selecting “Vehicle Status Monitor”
enables the system to notify you of
your vehicle's approaching inspection/
servicing period. Refer to the
Information section in the Mazda
Connect Owner's Manual.

The malfunction diagnosis connector is
designed exclusively for connecting the
specially designed device to perform
on-board diagnosis.
Do not connect any devices other than
the specially designed malfunction
diagnosis devices for servicing. If any
device other than the malfunction
diagnosis device is connected, it may
a ff ect the vehicle's electrical devices or
lead to damage such as battery
depletion.
1. Malfunction diagnosis connector
Maintenance and Care
Essential Information
6-3
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34