ECU MAZDA MODEL 3 HATCHBACK 2019 (in English) Workshop Manual

2. Remove the cover.
3. Turn the wing bolt and jack screwcounterclockwise.

1. Wing bolt
2. jack screw

5–Door
1. Remove the luggage mat.
2. Remove the jack.
To secure the jack
4–Door
1. Insert the wing bo lt into the jack with
the jack screw pointing to the front and
turn the wing bolt clockwise to
temporarily tighten it.
2. Turn the jack screw clockwise.
1. Wing bolt
2. jack screw

3. Turn the wing bolt completely to secure the jack.
NOTE
If the jack is not comp letely secured, it
could rattle while driving. Make sure the
jack screw is sufficiently tightened.
If Trouble Arises
Flat Tire
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2. Turn the spare tire hold-down boltcounterclockwise and remove the spare
tire.

1. Spare tire hold-down bolt
5–Door
1. Remove the luggage mat.
2.(Vehicles with sub-woofer)
Uncouple the sub-woofer connector.

NOTE
Extra strength may be required to
uncouple the connector. Be sure to
squeeze the tab firmly.
3. (Vehicles with sub-woofer)
Turn the spare tire hold-down bolt
counterclockwise and remove the
sub-woofer and the spare tire.

(Vehicles without sub-woofer)
Turn the spare tire hold-down bolt
counterclockwise and remove the spare
tire.

1. Spare tire hold-down bolt

To secure the spare tire
Store the spare tire in the reverse order of
removal. After storing, verify that the
spare tire is stored securely.
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 configuration:
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 off
and cause an accident.
6. (Aluminum wheel eq uipped vehicle)
Remove the center cap by tapping it
from the backside o f 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 the vehicleusing 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 fla t 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 thevehicle 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 thetools and jack.
11. Check the inflation pressure. Refer to Tires on page 9-9.
12. Have the flat tire repaired or replaced
as soon as possible.
13. After repairing or replacing the flat
tire, install the wh eel 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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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 from 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 damage 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 p ossible to your vehicle's
battery.
2. Make sure that the power such as for the headlights and air c onditioner is turned off.
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 securely connected so that they do not disconnect
due to engine vibrations.
1st lead
Positive (+) terminal o n the discharged battery
Positive (+) terminal on booster vehicle's battery
2nd lead
Negative (-) terminal on booster vehicle's battery
If Trouble Arises
Battery Runs Out
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Do not tow with sling-type equipment.
This could damage your vehicle. Use
wheel-lift or
flatbed equipment.

If the parking brake cannot be released
when towing the vehicle, transport the
vehicle with all front and rear wheels
raised
off the ground as shown in the
figure. If the vehicle is towed without
raising the wheels off the ground, the
brake system could be damaged.
1. Wheel dollies
Tiedown Hooks*
▼ Tiedown Hooks
CAUTION
Do not use the front and rear tiedown
eyelets for towing the vehicle.
They have been designed only for securing
the vehicle to a transport vessel during
shipping.
Using the eyelets for any other purpose
could result in the vehicle being damaged.
1. Remove the tiedown eyelet and the lug
wrench from the luggage compartment
(page 7-3).
2. Wrap a flathead screwdriver or similar tool with a soft c loth to prevent
damage to a painted bumper, and open
the cap located on the front or rear
bumper.
Front
(4–Door)
If Trouble Arises
Emergency Towing
*Some models.7-23
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(5–Door)
Rear
(4–Door)
(5–Door)
CAUTION
Do not use excessive force as it may
damage the cap or scratch the painted
bumper surface.
NOTE
Remove the cap completely and store it
so as not to lose it.
3. Securely install the tiedown eyelet using the lug wrench.
Front
(4–Door)
1. Lug wrench
2. Tiedown eyelet

(5–Door)
1. Lug wrench
2. Tiedown eyelet

If Trouble Arises
Emergency Towing
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Rear
(4–Door)
1. Lug wrench
2. Tiedown eyelet

(5–Door)
1. Lug wrench
2. Tiedown eyelet

4. Hook the tying rope to the tiedown
eyelet.
CAUTION
If the tiedown eyelet is not securely
tightened, it may loosen or disengage
from the bumper when tying the
vehicle. Make sure that the tiedown
eyelet is securely tightened to the
bumper.
If Trouble Arises
Emergency Towing
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When the light is flashing
The light flashes if the Electric Parking
Brake (EPB) has a malfunction. If the light
remains flashing even if the Electric
Parking Brake (EPB) switch is operated,
consult an Authorized Mazda Dealer as
soon as possible.
▼ Brake Override Warning Indication
This message is displayed when the
accelerator pedal and brake pedal are
depressed at the same time while driving.
Action to be taken
Release the accelerator pedal and depress
the brake pedal.
▼Check Engine Indication/Light
If this light illumina
tes 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 tank level being very low or
approaching empty.
The fuel-filler cap is missing or not
tightened securely.
If the check engine li ght remains on, or it
flashes continuously , do not drive at high
speeds and consult an Authorized Mazda
Dealer as soon as possible.
WA R N I N G
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*
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
7-30*Some models.
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