2021 MAZDA MODEL 3 HATCHBACK fuel

Only use SAE 5W-30 oil “Certified For
Gasoline Engines” by the American
Petroleum Institute (API).
Oil with this trademark symbol
conforms to the current engine and
emission system protection standards
and fuel economy requirements of the
International Lubricant Standardization
and Approval Committee (ILSAC),
comprised of U.S. and Japanese
automobile manufacturers.

Except U.S.A., Canada
Use SAE 5W -30 engine oil.
Oil container labels provide important
information.
A chief contribution this type of oil
makes to fuel economy is reducing the
amount of fuel necessary to overcome
engine friction.

For maintenance service, Mazda
recommends Mazda Genuine Parts.

(Mexico)
SKYACTIV -G 2.0 and SKYACTIV -G
2.5
Use API SM or higher, or ILSAC GF-IV
or higher/SAE 5W -30 engine oil. If SAE
5W -30 engine oil is not available, use
SAE 5W-20 engine oil.

The quality designation SM, or ILSAC
must be on the label.

SKYACTIV -G 2.5T
Use SAE 5W -30 engine oil. If SAE
5W -30 engine oil is not available, use
SAE 0W- 30 or SAE 10W -30 engine oil.

The quality designation SM or SN, or
ILSAC must be on the label.

Maintenance and Care
Owner Maintenance
6-18
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

9. Install the upper cover.
10.Insert the tabs of the lower coverinto the slots of the transmitter and
install the lower cover.
Tires
▼Tires
For reasons of proper performance,
safety, and better fuel economy, always
maintain recommended tire
inflation
pressures and stay within the
recommended load limits and weight
distribution.
WARNING
Using Di fferent Tire Types:
Driving your vehicle with di fferent
types of tires is dangerous. It could
cause poor handling and poor braking;
leading to loss of control.
Except for the limited use of the
temporary spare tire, use only the
same type tires (radial, bias-belted,
bias-type) on all four wheels.
Using Wrong-Sized Tires:
Using any other tire size than what is
speci fied for the vehicle (page 9-10)
is dangerous. It could seriously a ffect
ride, handling , ground clearance, tire
clearance, and speedometer
calibration. This could cause you to
have an accident. Use only tires that
are the correct size speci fied for the
vehicle.
Maintenance and Care
Owner Maintenance
6-33
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

▼Tire In
flation Pressure
WARNING
Always in flate the tires to the correct
pressure:
Overin flation or underin flation of tires
is dangerous. Adverse handling or
unexpected tire failure could result in a
serious accident.
Refer to Tires on page 9-10.
Use only a Mazda-genuine tire valve
cap:
Use of a non-genuine part is
dangerous as the correct tire air
pressure cannot be maintained if the
tire valve becomes damaged. If the
vehicle is driven under this condition,
the tire air pressure will decrease
which could result in a serious
accident. Do not use any part for the
tire valve cap that is not a
Mazda-genuine part.
Inspect all tire pressures monthly
(including the spare) when the tires are
cold. Maintain recommended
pressures for the best ride, handling ,
and minimum tire wear.
Refer to the specification charts (page
9-10).
NOTE
Always check tire pressure when tires
are cold.
Warm tires normally exceed
recommended pressures. Do not
release air from warm tires to adjust
the pressure.
Underin flation can cause reduced
fuel economy, uneven and
accelerated tire wear, and poor
sealing of the tire bead, which will
deform the wheel and cause
separation of tire from rim.
Overin flation can produce a harsh
ride, uneven and accelerated tire
wear, and a greater possibility of
damage from road hazards.
Keep your tire pressure at the correct
levels. If one frequently needs in flating, have it inspected.
▼ Tire Rotation
WARNING
Rotate tires periodically:
Irregular tire wear is dangerous. To
equalize tread wear for maintaining
good performance in handling and
braking , rotate the tires periodically or
sooner if irregular wear develops.
Please refer to Scheduled maintenance
for your tire rotation interval.
During rotation, inspect them for
correct balance.

1. Forward
Do not include (TEMPORARY USE
ONLY) spare tire in rotation.

Maintenance and Care
Owner Maintenance
6-34
Mazda3_8JM2-EA
-20H_Edition1_new 2020-7-10 17:21:34

No.FUSE RAT
-
ING PROTECTED COMPONENT
F7 15 A
―
20 A Fuel pump
F8 15 A Engine control system
F9 15 A Transmission control system
*
F1015 A Engine control system
F11 7.5 A Air conditioner
F12 15 A Engine control system
F13 15 A ―
F14 20 A
Front seat warmer
*
F15 20 A ―
F16 15 A For protection of various circuits
F17 ――
F18 15 A For protection of various circuits
F19 60 A Power steering system
F20 15 A Headlight (LH) 1
F21 15 A Headlight (RH) 1
F22 15 A Keyless system
F23 30 A ABS, Dynamic stability control system
F24 15 A Headlight (LH) 2
F25 15 A Headlight (RH) 2
F26 7.5 A On board diagnostics
F27 25 A For protection of various circuits
F28 25 A For protection of various circuits
F29 15 A Windshield washer
F30 15 A Accessory sockets
F31 15 A Horn
F32 ――
F33 ――
F34 ――
F35 50A ABS, Dynamic stability control system
F36 ――
F37 40 A Rear window defogger
F38 50 A For protection of various circuits
Maintenance and Care
Owner Maintenance
6-44*Some models.
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

When the ignition is switched ON
and the wiper lever is in the AUTO
position, do not touch the
windshield or the windshield wipers
Otherwise, the windshield wipers
will operate automatically which
could catch your fingers or damage
the windshield wipers.
When removing ice or snow, or
cleaning the windshield, always
make sure the wiper lever is in the
OFF position.
 Do not spray water in the engine
compartment. Otherwise, it could
result in engine-starting problems or
damage to electrical parts.
 When washing and waxing the
vehicle, be careful not to apply
excessive force to any single area of
the vehicle roof or the antenna.
Otherwise, you could dent the
vehicle or damage the antenna.
 Make sure that the fuel- filler lid is
closed and lock the doors.
Otherwise, the fuel-filler lid may be
forcefully opened by water pressure
causing damage to the vehicle or fuel- filler lid.
To help protect the finish from rust and
deterioration, wash your Mazda
thoroughly and frequently, at least
once a month, with lukewarm or cold
water.

If the vehicle is washed improperly, the
paint surface could be scratched. Here
are some examples of how scratching
could occur.

Scratches occur on the paint surface
when:
The vehicle is washed without first
rinsing o ff dirt and other foreign
matter.
The vehicle is washed with a rough,
dry, or dirty cloth.
The vehicle is washed at a car wash
that uses brushes that are dirty or too sti ff.
Cleansers or wax containing
abrasives are used.
NOTE
Mazda is not responsible for
scratches caused by automatic car
washes or improper washing.
Scratches are more noticeable on
vehicles with darker paint finishes.
To minimize scratches on the vehicle's
paint finish:
Rinse o ff any dirt or other foreign
matter using lukewarm or cold water
before washing.
Use plenty of lukewarm or cold
water and a soft cloth when washing
the vehicle. Do not use a nylon cloth.
Rub gently when washing or drying
the vehicle.
Take your vehicle only to a car wash
that keeps its brushes well
maintained.
Do not use abrasive cleansers or wax
that contain abrasives.
CAUTION
 Do not use steel wool, abrasive
cleaners, or strong detergents
containing highly alkaline or caustic
agents on chrome-plated or
anodized aluminum parts. This may
damage the protective coating; also,
cleaners and detergents may discolor
or deteriorate the paint.
Maintenance and Care
Appearance Care
6-50
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

▼Repairing Damage to the Finish
Deep scratches or chips on the
finish
should be repaired promptly. Exposed
metal quickly rusts and can lead to
major repairs.
CAUTION
If your Mazda is damaged and needs
metal parts repaired or replaced, make
sure the body shop applies
anti-corrosion materials to all parts,
both repaired and new. This will
prevent them from rusting.
▼ Bright-Metal Maintenance
Use tar remover to remove road tar
and insects. Never do this with a
knife or similar tool.
To prevent corrosion on bright-metal
surfaces, apply wax or chrome
preservative and rub it to a high
luster.
During cold weather or in coastal
areas, cover bright-metal parts with a
coating of wax or preservative
heavier than usual. It would also help
to coat them with noncorrosive
petroleum jelly or some other
protective compound.
CAUTION
Do not use steel wool, abrasive
cleaners, or strong detergents
containing highly alkaline or caustic
agents on chrome-plated or anodized
aluminum parts. This may result in
damage to the protective coating and
cause discoloration or paint
deterioration.
▼ Underbody Maintenance
Road chemicals and salt used for ice
and snow removal and solvents used
for dust control may collect on the
underbody. If not removed, they will
speed up rusting and deterioration of
such underbody parts as fuel lines,
frame,
floor pan, and exhaust system,
even though these parts may be coated
with anti-corrosive material.

Thoroughly flush the underbody and
wheel housings with lukewarm or cold
water at the end of each winter. Try
also to do this every month.

Pay special attention to these areas
because they easily hide mud and dirt.
It will do more harm than good to wet
down the road grime without
removing it.

The lower edges of doors, rocker
panels, and frame members have drain
holes that should not be clogged.
Water trapped there will cause rusting.
WARNING
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
a ff ected.
Maintenance and Care
Appearance Care
6-52
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

Starting a Flooded Engine
▼Starting a Flooded Engine
If the engine fails to start, it may be
fl
ooded (excessive fuel in the engine).

Follow this procedure:

1. If the engine does not start within 5 seconds on the first try, wait 10
seconds and try again.
2. Make sure the parking brake is on.
3. Depress the accelerator all the way
and hold it there.
4. Depress the clutch pedal (manual
transmission) or the brake pedal
(automatic transmission), then
press the push button start. If the
engine starts, release the
accelerator immediately because
the engine will suddenly rev up.
5. If the engine fails to start, crank it
without depressing the accelerator.

If the engine still does not start using
the previous procedure, have your
vehicle inspected by an Authorized
Mazda Dealer.
Push-Starting
▼ Push-Starting
Do not push-start your Mazda.
WARNING
Never tow a vehicle to start it:
Towing a vehicle to start it is
dangerous. The vehicle being towed
could surge forward when its engine
starts, causing the 2 vehicles to collide.
The occupants could be injured.
CAUTION
Do not push-start a vehicle that has a
manual transmission. It can damage
the emission control system.
NOTE
You cannot start a vehicle with an
automatic transmissi
on by pushing it.
If Trouble Arises
Emergency Starting
7-20
Mazda3_8JM2-EA-20H_Edition1_new 2020-7-10 17:21:34

▼Brake Override Warning Indication
This message is displayed when the
accelerator pedal and brake pedal are
depressed at the same time while
driving.
Release the accelerator pedal and
depress the brake pedal.
▼Check Engine Indication/Light
If this light illuminates while driving ,
the vehicle may have a problem. It is
important to note the driving
conditions when the light illuminated
and consult an Authorized Mazda
Dealer.
The check engine light may illuminate
in the following cases:
The engine's electrical system has a
problem.
The emission control system has a
problem.
The fuel-
filler cap is missing or not
tightened securely.
The fuel tank level being very low or
approaching empty.
If the check engine light remains on, or
it flashes continuously , do not drive at
high speeds and consult an Authorized
Mazda Dealer as soon as possible.
WARNING
If the check engine light turns on, do
not disconnect the battery cables.
If the battery cables are disconnected
and then reconnected, the engine
could be damaged and catch on fire.
▼Automatic Transmission Warning
Indication/Warning Light*
The indication/light illuminates when
the transmission has a problem.
CAUTION
If the automatic transmission warning
indication/light illuminates, the
transmission has an electrical problem.
Continuing to drive your Mazda in this
condition could cause damage to your
transmission. Consult an Authorized
Mazda Dealer as soon as possible.
▼
AWD Warning Indication/
Warning Light*
“AWD Malfunction. Front Wheel
Drive Only. Have the Vehicle
Inspected” is displayed/When the
light is turned on
The indication is displayed/the light
turns on under the following
conditions. The system may have a
malfunction. Have the vehicle checked
at an Authorized Mazda Dealer.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
*Some models.7-31
Mazda3_8JM2-EA
-20H_Edition1_new 2020-7-10 17:21:34