Mazda 3 (2018 year). Instruction

4. Turn the screw counterclockwise and

remove it, and then partially peel back
the mudguard.

5. Disconnect the connector from the unit

by pressing the tab on the connector
with your finger and pulling the
connector downward.

6. Turn the socket and bulb assembly to

remove it. Carefully remove the bulb
from its socket in the reflector by
gently pulling it straight backward out
of the socket.

7. Install the new bulb in the reverse

order of the removal procedure.

High-beam bulbs/Daytime running
lights

1. Make sure the ignition is switched off,

and the headlight switch is off.

2. Lift the hood.
3. Disconnect the connector from the unit

by pressing the tab on the connector
with your finger and pulling the
connector downward.

Maintenance and Care

Owner Maintenance

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4. Turn the socket and bulb assembly to

remove it. Carefully remove the bulb
from its socket in the reflector by
gently pulling it straight backward out
of the socket.

5. Install the new bulb in the reverse

order of the removal procedure.

Front turn signal lights, Parking lights/
Front side-marker lights (With halogen
headlights), Front side-marker lights
(With LED headlights)

1. If you are changing the right bulb, start

the engine, turn the steering wheel all
the way to the left, and turn off engine.
If you are changing the left bulb, turn
the steering wheel to the right, and turn
off engine.

2. Make sure the headlight switch is off.

3. Pull the center of each plastic retainer

and remove the retainers.

Removal

Installation

4. Turn the screw counterclockwise and

remove it, and then partially peel back
the mudguard.

Maintenance and Care

Owner Maintenance

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5. (Front turn signal lights)

Disconnect the connector from the unit
by pressing the tab on the connector
with your finger and pulling the
connector.

6. Turn the socket and bulb assembly

counterclockwise and remove it.

7. Disconnect the bulb from the socket.

Front turn signal lights

Parking lights/Front side-marker
lights (With halogen headlights),
Front side-marker lights (With LED
headlights)

8. Install the new bulb in the reverse

order of the removal procedure.

Side turn signal lights

, Brake lights

(LED type), Taillights/Rear side-marker
lights (LED type), Taillights (Trunk lid
side/Liftgate side), High-mount brake
light

The LED bulb cannot be replaced as a
single unit because it is an integrated unit.
The LED bulb has to be replaced with the
unit. We recommend an Authorized
Mazda Dealer when the replacement is
necessary.

Maintenance and Care

Owner Maintenance

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*Some models.

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Rear turn signal lights, Brake lights/
Taillights/Rear side-marker lights (Bulb
type)

4–Door

1. Make sure the ignition is switched off,

and the headlight switch is off.

2. Pull the center of each plastic retainer

and remove the retainers.

3. Remove trunk end trim.

Installation

Removal

4. Pull the center of each plastic retainer

and remove the retainers.

5. Peel back the trunk side trim.

Removal

Installation

6. Turn the socket and bulb assembly

counterclockwise and remove it.
Rear turn signal lights

Brake lights/Taillights/Rear
side-marker lights (Bulb type)

Maintenance and Care

Owner Maintenance

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9. Install the new bulb in the reverse

order of the removal procedure.

5–Door

(Left side)
1. Make sure the ignition is switched off,

and the headlight switch is off.

2. Remove the cover.

3. Turn the socket and bulb assembly

counterclockwise and remove it.
Rear turn signal lights

Brake lights/Taillights/Rear
side-marker lights (Bulb type)

4. Disconnect the connector from the unit

by pressing the tab on the connector
with your finger and pulling the
connector.
Rear turn signal lights

Brake lights/Taillights/Rear
side-marker lights (Bulb type)

Maintenance and Care

Owner Maintenance

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5. Disconnect the bulb by pulling it out.

Rear turn signal lights, Brake lights/
Taillights/Rear side-marker lights
(Bulb type)

6. Install the new bulb in the reverse

order of the removal procedure.

7. Insert the cover tabs and install the

cover.

Tabs

NOTE
Verify that the cover is securely
installed.

(Right side)
1. Make sure the ignition is switched off,

and the headlight switch is off.

2. Turn the knob and remove the cover.

3. Turn the wing bolt and jack screw

counterclockwise.

4. Remove the jack
5. Turn the socket and bulb assembly

counterclockwise and remove it.

Maintenance and Care

Owner Maintenance

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Rear turn signal lights

Brake lights/Taillights/Rear
side-marker lights (Bulb type)

6. Disconnect the connector from the unit

by pressing the tab on the connector
with your finger and pulling the
connector.
Rear turn signal lights

Brake lights/Taillights/Rear
side-marker lights (Bulb type)

7. Disconnect the bulb by pulling it out.

Rear turn signal lights, Brake lights/
Taillights/Rear side-marker lights
(Bulb type)

8. Install the new bulb.
9. Insert the wing bolt into the jack with

the jack screw pointing to the down
and turn the wing bolt clockwise to
temporarily tighten it.

Maintenance and Care

Owner Maintenance

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10. Turn the jack screw in the direction

shown in the figure.

11. Turn the wing bolt completely to

secure the jack.

NOTE
If the jack is not completely secured, it
could rattle while driving. Make sure
the jack screw is sufficiently tightened.

12. Install the cover in the reverse order of

the removal procedure.

13. Insert the cover tabs and install the

cover.

Tabs

NOTE
Verify that the cover is securely
installed.

Reverse lights

4–Door

1. Make sure the ignition is switched off,

and the headlight switch is off.

2. Pull the center of each plastic retainer

and remove the retainers.

3. Peel back the trunk lid trim.

Removal

Installation

4. Disconnect the electrical connector

from the bulb by pressing the tab on
the connector with your finger and
pulling the connector.

5. Turn the socket and bulb assembly

counterclockwise and remove it.

Maintenance and Care

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6. Disconnect the bulb from the socket.

7. Install the new bulb in the reverse

order of the removal procedure.

5–Door

1. Make sure the ignition is switched off,

and the headlight switch is off.

2. Remove the cover.

3. Disconnect the electrical connector

from the bulb by pressing the tab on
the connector with your finger and
pulling the connector.

4. Turn the socket and bulb assembly

counterclockwise and remove it.

5. Disconnect the bulb from the socket.

6. Install the new bulb in the reverse

order of the removal procedure.

Maintenance and Care

Owner Maintenance

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License plate lights

4–Door

1. Make sure the ignition is switched off,

and the headlight switch is off.

2. Pull the center of each plastic retainer

and remove the retainers.

3. Peel back the trunk lid trim.

Removal

Installation

4. Disconnect the connector from the unit

by pressing the tab on the connector
with your finger and pulling the
connector.

5. Turn the socket and bulb assembly

counterclockwise and remove it.

6. Disconnect the bulb from the socket.

7. Install the new bulb in the reverse

order of the removal procedure.

5–Door

1. Make sure the ignition is switched off,

and the headlight switch is off.

2. Wrap a flathead screwdriver with a

soft cloth to prevent damage to the
lens, and then remove the lens by
carefully prying on the edge of the lens
with a flathead screwdriver.

3. Disconnect the bulb by pulling it out.

4. Install the new bulb in the reverse

order of the removal procedure.

Maintenance and Care

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▼ Replacing Interior Light Bulbs

Overhead lights (Front)/Map lights

Overhead lights (Front)

, Overhead

lights (Rear)

, Vanity mirror lights

1. Wrap a small flathead screwdriver with

a soft cloth to prevent damage to the
lens, and then remove the lens by
carefully prying on the edge of the lens
with the flathead screwdriver.

2. Disconnect the bulb by pulling it out.

Overhead lights (Front)/Map lights

Overhead lights (Front)

Edge

Overhead lights (Rear)

Edge

Vanity mirror lights

3. Install the new bulb in the reverse

order of the removal procedure.

Maintenance and Care

Owner Maintenance

*Some models.

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Trunk light (4–Door)

1. Press both sides of the lens cap to

remove it.

2. Disconnect the bulb by pulling it out.

3. Install the new bulb in the reverse

order of the removal procedure.

Luggage compartment light (5–Door)

1. Wrap a small flathead screwdriver with

a soft cloth to prevent damage to the
lens and remove the lens by carefully
prying on the edge of the lens with the
flathead screwdriver.

2. Disconnect the connector from the unit

by pressing the tab on the connector
with your finger and pulling the
connector.

3. Disconnect the bulb by pulling it out.

4. Install the new bulb in the reverse

order of the removal procedure.

Maintenance and Care

Owner Maintenance

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Fuses

Your vehicle's electrical system is
protected by fuses.

If any lights, accessories, or controls do
not work, inspect the appropriate circuit
protector. If a fuse has blown, the inside
element will be melted.

If the same fuse blows again, avoid using
that system and consult an Authorized
Mazda Dealer as soon as possible.

▼ Fuse Replacement

Replacing the fuses on the vehicle's left
side

If the electrical system does not work, first
inspect the fuses on the vehicle's left side.

1. Make sure the ignition is switched off,

and other switches are off.

2. Open the fuse panel cover.

3. Pull the fuse straight out with the fuse

puller provided on the fuse block
located in the engine compartment.

4. Inspect the fuse and replace it if it is

blown.

Normal

Blown

5. Insert a new fuse of the same

amperage rating, and make sure it fits
tightly. If it does not fit tightly, have an
expert install it. We recommend an
Authorized Mazda Dealer.
If you have no spare fuses, borrow one
of the same rating from a circuit not
essential to vehicle operation, such as
the AUDIO or OUTLET circuit.

CAUTION

Always replace a fuse with a genuine
Mazda fuse or equivalent of the same
rating. Otherwise you may damage the
electric system.

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6. Reinstall the cover and make sure that

it is securely installed.

Replacing the fuses under the hood

If the headlights or other electrical
components do not work and the fuses in
the cabin are normal, inspect the fuse
block under the hood. If a fuse is blown, it
must be replaced. Follow these steps:

1. Make sure the ignition is switched off,

and other switches are off.

2. Remove the fuse block cover.

3. If any fuse but the MAIN fuse is

blown, replace it with a new one of the
same amperage rating.

Normal

Blown

WARNING

Do not replace the main fuse and
multiplex slow blow fuse by yourself.
Have an Authorized Mazda Dealer
perform the replacement:
Replacing these fuses by yourself is
dangerous because they are high
current fuses. Incorrect replacement
could cause an electrical shock or a
short circuit resulting in a fire.

4. Reinstall the cover and make sure that

it is securely installed.

Maintenance and Care

Owner Maintenance

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▼ Fuse Panel Description

Fuse block (Engine compartment)

Multiplex slow blow fuse

DESCRIPTION

FUSE

RATING

PROTECTED COMPONENT

FOG

15 A

Fog lights

H/L HI

20 A

Headlight high beam

H/CLEAN

20 A

―

STOP

10 A

Brake lights

ROOM

15 A

Overhead light

7.5 A

Engine control system

FUEL WARM

15 A

―

HAZARD

25 A

Hazard warning flashers, Turn signal lights

ABS/DSCS

30 A

ABS, Dynamic stability control system

METER2

7.5 A

―

AUDIO2

7.5 A

Audio system

BOSE

25 A

Bose

Sound System-equipped model

AUDIO1

15 A

Audio system

FUEL PUMP

15 A

Fuel system

HID R DRL

15 A

Headlight (RH)

, Daytime running lights

AT PUMP

15 A

―

HORN

15 A

Horn

TAIL

15 A

Taillights, License plate lights, Parking lights, Front side-mark-
er lights

Maintenance and Care

Owner Maintenance

*Some models.

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Mazda 3 (2018 year). Instruction - part 30