2021 MAZDA MODEL 3 HATCHBACK Owners Manual

NOTE
When raising the jack head into the
jacking position and aligning the
groove in the jack head with the rail
under the vehicle body, the top of
the jack head contacts the vehicle's
underbody without the rail
contacting the bottom of the
groove.
7. Insert the jack lever and attach the lug wrench to tire jack.

8. Turn the jack handle clockwise andraise the vehicle high enough so
that the spare tire can be installed.
Before removing the lug nuts, make
sure your Mazda is firmly in
position and that it cannot slip or
move.

WARNING
Do not jack up the vehicle higher
than is necessary:
Jacking up the vehicle higher than is
necessary is dangerous as it could
destabilize the vehicle resulting in
an accident.
Do not start the engine or shake
the vehicle while it is jacked up:
Starting the engine or shaking the
vehicle while it is jacked up is
dangerous as it could cause the
vehicle to fall o ff the jack resulting
in an accident.
Never go under the vehicle while it
is jacked up:
Going under the vehicle while it is
jacked up is dangerous as it could
result in death or serious injury if
the vehicle were to fall o ff the jack.
9. Remove the lug nuts by turning them counterclockwise; then
remove the wheel and center cap.
▼Locking Lug Nuts
If your Mazda is equipped with the
optional antitheft wheel lug nuts, a
special key must be used to unlock the
locking lug nut for each wheel. The key
is stored in the glove compartment,
center console storage, storage box, or
trunk. Register the key and lug nuts
with the lock manufacturer by
filling
out the registration card and mailing it
in using the accompanying envelope. If
the key is lost, consult an Authorized
Mazda Dealer or use the lock
manufacturer’s order form to order a
new key.
If Trouble Arises
Flat Tire
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Antitheft wheel lug nuts cannot be
installed on a steel wheel spare tire.
When installing a temporary spare tire,
use one of the original lug nuts in place
of the locking lug nut. The original lug
nuts are stored inside your Mazda.
1. Antitheft lug nut
2. Special key
To remove an antitheft lug nut
1. Obtain the special key for theantitheft lug nut.
2. Place the special key on top of the antitheft lug nut, and be sure to
hold the key square to it. If you
hold the key at an angle, you may
damage both key and nut. Do not
use a power impact wrench.
3. Place the lug wrench on top of the key and apply pressure. Turn the
wrench counterclockwise.
To install the antitheft lug nut
1. Place the special key on top of the nut, and be sure to hold the key
square to it. If you hold the key at
an angle, you may damage both key
and nut. Do not use a power
impact wrench.
2. Place the lug wrench on top of the special key, apply pressure, and
turn it clockwise.
Nut tightening torque
N·m (kgf·m, ft·lbf) 108―
147 (12― 14,
80 ―108)
▼ Mounting the Spare Tire
1. Remove dirt and grime from the
mounting surfaces of the wheel and
hub, including the hub bolts, with a
cloth.

WARNING
Make sure the mounting surfaces
of the wheel, hub and lug nuts are
clean before changing or replacing
tires:
When changing or replacing a tire,
not removing dirt and grime from
the mounting surfaces of the wheel,
hub and hub bolts is dangerous.
The lug nuts could loosen while
driving and cause the tire to come
off, resulting in an accident.
2. Mount the spare tire.
3. Install the lug nuts with the beveled edge inward; tighten them by hand.

If Trouble Arises
Flat Tire
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WARNING
Do not apply oil or grease to lug
nuts and bolts and do not tighten
the lug nuts beyond the
recommended tightening torque:
Applying oil or grease to lug nuts
and bolts is dangerous. The lug nuts
could loosen while driving and
cause the tire to come off, resulting
in an accident. In addition, lug nuts
and bolts could be damaged if
tightened more than necessary.
4. Turn the jack handle
counterclockwise using the lug
wrench and lower the vehicle.
5. Use the lug wrench to tighten the
nuts in the order shown.

If you are unsure of how tight the
nuts should be, have them
inspected at an Authorized Mazda
Dealer.
Nut tightening torque
N·m (kgf·m, ft·lbf) 108―
147 (12 ―14,
80― 108)
WARNING
Always securely and correctly
tighten the lug nuts:
Improperly or loosely tightened lug
nuts are dangerous. The wheel
could wobble or come
off. This
could result in loss of vehicle
control and cause a serious
accident.
Be sure to reinstall the same nuts
you removed or replace them with
metric nuts of the same
con figuration:
Because the wheel studs and lug
nuts on your Mazda have metric
threads, using a non-metric nut is
dangerous. On a metric stud, it
would not secure the wheel and
would damage the stud, which
could cause the wheel to slip o ff
and cause an accident.
6. (Aluminum wheel equipped
vehicle)
Remove the center cap by tapping
it from the backside of the wheel
using the lug wrench.
7. Store the damaged tire in the trunk (4-door) or luggage compartment
(5-door).

8. Secure the damaged tire to thevehicle using the following method.
If Trouble Arises
Flat Tire
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(Vehicles with flat tire hold-down
bolt (excluding vehicles with
sub-woofer for 5-door))
1. Spread apart the tabs on the spare tire hold-down bolt that
was removed when removing
the spare tire and remove the
bolt for securing the spare tire.
1. Tabs
2. Bolt for securing spare tire
3. Spare tire hold-down bolt

2. Remove the bolt for securing the
flat tire from its stored position
and install it in place of the
removed spare tire hold-down
bolt.
1. Bolt for securing the flat tire
2. Spare tire hold-down bolt

NOTE
The longer bolt is used as the
bolt for securing the flat tire,
and the shorter one is used as
the bolt for securing the spare
tire. When installing a bolt,
check the bolt's length.
3. Secure the damaged tire to the vehicle using the flat tire
hold-down bolt.
(Vehicles with flat tire hold-down
bolt and with sub-woofer for
5-door))
1. Remove the bolt for securing the
flat tire from its stored position.
2. Secure the damaged tire to the vehicle using the flat tire
hold-down bolt.
1. Flat tire hold-down bolt
2. Sub-woofer

If Trouble Arises
Flat Tire
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(Vehicles without flat tire
hold-down bolt)
1. Secure the damaged tire to the vehicle using the spare tire
hold-down bolt removed when
removing the spare tire.
9. Place the trunk mat (4-door) orluggage mat (5-door) on the
damaged tire.
10.Remove the tire blocks and store
the tools and jack.
11.Check the in flation pressure. Refer
to Tires on page 9-10.
12.Have the flat tire repaired or
replaced as soon as possible.
13.After repairing or replacing the flat
tire, install the wheel cover
(vehicles with steel wheels) or
center cap (vehicles with aluminum
wheels) using the following
procedure.
(Wheel cover)
1. Align the notch on the wheel cover with the tire valve of the
wheel and install the wheel
cover to the wheel.
1. Notch
2. Tire valve
CAUTION
Always align the notch on the
wheel cover with the tire valve
of the wheel. Otherwise, it
could cause damage to the
wheel cover and the tire valve.
(Center cap)
1. Align the center cap with the center hole of the wheel and
install the center cap to the
wheel.
If Trouble Arises
Flat Tire
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WARNING
Do not drive with any tires that have
incorrect air pressure:
Driving on tires with incorrect air
pressure is dangerous. Tires with
incorrect pressure could aff ect
handling and result in an accident.
When you check the regular tires' air
pressure, check the spare tire, too.
NOTE
To prevent the jack and tool from
rattling, store them properly.
If Trouble Arises
Flat Tire
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Jump-Starting
▼Jump-Starting
Jump-starting is dangerous if done incorrec
tly. So follow the procedure carefully. If
you feel unsure about jump-starting, we strongly recommend that you have a
competent service technician do the work.
WARNING
Follow These Precautions Carefully:
To ensure safe and correct handling of the battery, read the following precautions
carefully before using the battery or inspecting it.
Keep flames and sparks away from open battery cells and do not allow
metal tools to contact the positive (+) or negative (–) terminal of the battery when
working near a battery. Do not allow the positive (+) terminal to contact the
vehicle body:
Flames and sparks near open battery cell s are dangerous. Hydrogen gas, produced
during normal battery operation, could ignite and cause the battery to explode. An
exploding battery can cause serious burns and injuries. Keep all flames including
cigarettes and sparks away from open battery cells.
Keep all flames and sparks away from open battery cells because hydrogen
gas is produced from open battery cells while charging the battery or adding
battery fluid:
Flames and sparks near open battery cell s are dangerous. Hydrogen gas, produced
during normal battery operation, could ignite and cause the battery to explode. An
exploding battery can cause serious burns and injuries. Keep all flames including
cigarettes and sparks away from open battery cells.
Do not jump-start a frozen battery or one with a low fluid level:
Jump-starting a frozen battery or one with a low fluid level is dangerous. It may
rupture or explode, causing serious injury.
If Trouble Arises
Battery Runs Out
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Connect the negative cable to a good ground point away from the battery:
Connecting the end of the second jumper cable to the negative (–) terminal of the
discharged battery is dangerous.
A spark could cause the gas around the battery to explode and injure someone.
Route the jumper cables away fr om parts that will be moving:
Connecting a jumper cable near or to moving parts (cooling fans, belts) is
dangerous. The cable could get caught when the engine starts and cause serious
injury.
CAUTION
Use only a 12 V booster system. You can dama ge a 12 V starter, ignition system, and
other electrical parts beyond repair with a 24 V power supply (two 12 V batteries in
series or a 24 V motor generator set).
1. Move the booster vehicle so that its battery is as close as possible to your
vehicle's battery.
2. Make sure that the power such as for th e headlights and air conditioner is turned
o ff.
3. Remove the battery cover.
4. Turn off the booster vehicle's engine and connect the jumper cables in the
following order.
Make sure that the jumper cables are se curely connected so that they do not
disconnect due to engine vibrations.
If Trouble Arises
Battery Runs Out
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