Mazda MX-5 (2018 year). Manual

▼ Replacing a Tire

WARNING

Always use tires that are in good condition:
Driving with worn tires is dangerous.
Reduced braking, steering, and traction
could result in an accident.

Replace all four tires at the same time:
Replacing just one tire is dangerous. It
could cause poor handling and poor
braking resulting in loss of vehicle control.
Mazda strongly recommends that you
replace all four tires at the same time.

If a tire wears evenly, a wear indicator will
appear as a solid band across the tread.
Replace the tire when this happens.

New tread

Tread wear indicator

Worn tread

You should replace the tire before the band
crosses the entire tread.

NOTE
Tires degrade over time, even when they
are not being used on the road. It is
recommended that tires generally be
replaced when they are 6 years or older.
Heat caused by hot climates or frequent
high loading conditions can accelerate the
aging process. The period in which the tire
was manufactured (both week and year) is
indicated by a 4-digit number.
Refer to Tire Labeling on page 8-25.

Maintenance and Care

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▼ Replacing a Wheel

WARNING

Always use wheels of the correct size on
your vehicle:
Using a wrong-sized wheel is dangerous.
Braking and handling could be affected,
leading to loss of control and an accident.

CAUTION

A wrong-sized wheel may adversely affect:

Tire fit
Wheel and bearing life
Ground clearance
Snow-chain clearance
Speedometer calibration
Headlight aim
Bumper height
Tire Pressure Monitoring System

NOTE



When replacing a wheel, make sure the
new one is the same as the original
factory wheel in diameter, rim width,
and offset (inset/outset).



For details, contact an Authorized
Mazda Dealer.

Proper tire balancing provides the best
riding comfort and helps reduce tread
wear. Out-of-balance tires can cause
vibration and uneven wear, such as
cupping and flat spots.

Maintenance and Care

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CAUTION

When removing the lens or lamp unit using
a flathead screwdriver, make sure that the
flathead screwdriver does not contact the
interior terminal. If the flathead screwdriver
contacts the terminal, a short circuit may
occur.

NOTE



To replace the bulb, contact an
Authorized Mazda Dealer.



Use the protective cover and carton for
the replacement bulb to dispose of the
old bulb promptly and out of the reach
of children.

▼ Replacing Exterior Light Bulbs

Headlights, Daytime running lights
(LED type), Parking lights, High-mount
brake light, Brake lights, Taillights

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.

Daytime running lights (Bulb type)

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.

Removal

Installation

3. Turn the screw counterclockwise and

remove it, and then partially peel back
the mudguard.

4. Turn the socket and bulb assembly

counterclockwise and remove it.

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5. Disconnect the bulb from the socket.

6. Install the new bulb in the reverse

order of the removal procedure.

Front side-marker lights

1. Make sure the ignition is switched off,

and the headlight switch is off.

2. If you are changing the right bulb, start

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

3. Pull the center of each plastic retainer

and remove the retainers, and then
partially peel back the mudguard.

Removal

Installation

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.

Front turn signal lights

1. Make sure the ignition is switched off,

and the headlight switch is off.

2. If you are changing the right bulb, start

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

3. Pull the center of each plastic retainer

and remove the retainers, and then
partially peel back the mudguard.

Removal

Installation

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4. Disconnect the connector from the unit

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

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.

Side turn signal lights

1. Make sure the ignition is switched off,

and the headlight switch is off.

2. If you are changing the right bulb, start

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

3. Pull the center of each plastic retainer

and remove the retainers, and then
partially peel back the mudguard.

Removal

Installation

4. Remove the unit by pressing the tab on

the unit with your finger and pulling
the unit forward.

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5. Detach the electrical connector from

the unit by pulling it to the rear.

6. Install the new side turn signal unit in

the reverse order of the removal
procedure.

Rear turn signal lights

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 and the trunk
end trim.

Removal

Installation

3. Disconnect the connector from the unit

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

4. Pull the center of each plastic retainer

and remove the retainers, and then
partially peel back the trunk side trim.

Removal

Installation

Maintenance and Care

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5. To provide a hole for inserting a finger

to remove the rear combination lamp
unit later in the procedure, pinch the
top and bottom of the grommet shown
in the figure and press it out of the hole
in the direction of the rear combination
lamp unit.

Grommet

Rear combination lamp
unit

Grommet

Body

6. Apply protective tape as shown in the

figure. Otherwise, the rear combination
lamp unit will contact the body and
may scratch or damage it.
Always apply three layers of protective
tape to the area indicated in the figure.

Protective tape

Rear combination
lamp unit

Area specifically in need
of protection

CAUTION

Do not use tape with strong adhesive

strength. Otherwise, the vehicle paint
may peel off.

Always apply three layers of

protective tape to the area indicated
in the figure. Otherwise, the body
may become scratched or damaged
when pulling out the rear
combination lamp unit.

7. Remove the screw and nut.

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8. To remove the rear combination lamp

unit, insert your finger from inside the
trunk and into the hole from which the
grommet was removed in Step 5, and
while holding the lamp lens (round
part) of the rear combination lamp with
your hand, press the rear combination
lamp unit until the hook detaches from
the clip.

Rear combination lamp unit

Hook

Grommet installation
hole

9. After the hook is detached, pull out the

rear combination lamp unit in the
direction of the arrow and remove it.

Grommet installation hole

Clip

Hook

Rear combination
lamp unit

CAUTION

Carefully pull out the rear combination
lamp unit when removing it from the
body.
The wiring may become damaged if the
rear combination lamp unit is forcefully
pulled out.

10. Turn the socket and bulb assembly

counterclockwise and remove it.

11. Disconnect the bulb from the socket.

12. Install the new bulb in the reverse

order of the removal procedure.

Rear side-marker lights

1. Make sure the ignition is switched off,

and the headlight switch is off.

2. Turn the socket and bulb assembly

counterclockwise and remove it.

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3. Disconnect the bulb from the socket.

4. Install the new bulb in the reverse

order of the removal procedure.

Reverse lights

1. Make sure the ignition is switched off,

and the headlight switch is off.

2. Turn the socket and bulb assembly

counterclockwise and remove it.

3. Disconnect the bulb from the socket.

4. Install the new bulb in the reverse

order of the removal procedure.

License plate lights

1. Make sure the ignition is switched off,

and the headlight switch is off.

2. Remove the unit by pressing the tab on

the unit with your finger and pulling
the unit downward.

3. Turn the socket and bulb assembly

counterclockwise and remove it.

4. Disconnect the bulb from the socket.

5. Install the new bulb in the reverse

order of the removal procedure.

▼ Replacing Interior Light Bulbs

Overhead light

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.

Maintenance and Care

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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.

6. Reinstall the cover and make sure that

it is securely installed.

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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.

NOTE
If the lock is forcefully opened, the fuse
block cover may come in contact with
the frame when it is removed and
become scratched.
When removing the cover, remove it
slowly according to the following
procedure.
1. Disengage the rear lock by

pressing down on the front tab with
your fingers.

2. Remove the front tab while slightly

lifting the front of the cover.

3. Remove the cover while lifting it

and sliding it to the rear.

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 by
yourself. Have an Authorized Mazda
Dealer perform the replacement:
Replacing the fuse by yourself is
dangerous because the MAIN fuse is a
high current fuse. 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.

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▼ Fuse Panel Description

Fuse block (Engine compartment)

DESCRIPTION

FUSE

RATING

PROTECTED COMPONENT

ENG IG3

5 A

―

ENG IG2

5 A

―

HORN2

7.5 A

Horn

C/U IG1

15 A

For protection of various circuits

ENG IG1

7.5 A

Engine control system

―

INTERIOR

15 A

Overhead light

ENG B

7.5 A

Engine control system

AUDIO2

15 A

Audio system

METER1

10 A

Instrument cluster

SRS1

7.5 A

Air bag

―

RADIO

7.5 A

Audio system

ENGINE3

20 A

Engine control system

ENGINE1

10 A

Engine control system

ENGINE2

15 A

Engine control system

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DESCRIPTION

FUSE

RATING

PROTECTED COMPONENT

AUDIO1

25 A

Audio system

A/C MAG

7.5 A

Air conditioner

AT PUMP

H/L HI

20 A

―

15 A

Transmission control system

D LOCK

25 A

Power door locks

H/L RH

20 A

Headlight (RH)

ENG B2

7.5 A

Engine control system

TAIL

20 A

Taillights, License plate lights, Parking lights

DRL

15 A

―

ROOM

25 A

Overhead light

FOG

15 A

―

H/CLEAN

20 A

―

STOP

10 A

Brake lights

HORN

15 A

Horn

H/L LH

20 A

Headlight (LH)

ABS/DSC S

30 A

ABS, Dynamic stability control system

HAZARD

15 A

Hazard warning flashers, Turn signal lights

FUEL PUMP

15 A

Fuel system

ENG B3

5 A

―

WIPER

20 A

Windshield wipers

CABIN B

50 A

For protection of various circuits

―

ABS/DSC M

50 A

ABS, Dynamic stability control system

EVVT

A/R PUMP

20 A

Engine control system

EVPS

30 A

Brake control system

FAN1

30 A

Cooling fan

FAN2

40 A

―

ENG.MAIN

40 A

Engine control system

EPS

60 A

Power steering system

DEFOG

30 A

Rear window defogger

IG2

30 A

For protection of various circuits

INJECTOR

30 A

Engine control system

HEATER

40 A

Air conditioner

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DESCRIPTION

FUSE

RATING

PROTECTED COMPONENT

―

Fuse block (Left side)

DESCRIPTION

FUSE

RATING

PROTECTED COMPONENT

RHT R

30 A

Retractable hardtop (RH)

RHT L

30 A

Retractable hardtop (LH)

―

F.OUTLET

15 A

Accessory sockets

―

AT IND

7.5 A

AT shift indicator

MIRROR

7.5 A

Power control mirror

R_DECK R

30 A

Retractable hardtop (RH)

R_DECK L

30 A

Retractable hardtop (LH)

F.WASHER

15 A

Windshield washer

P.WINDOW

30 A

Power windows

―

SRS2/ESCL

15 A

―

SEAT WARM

20 A

Seat warmer

M.DEF

7.5 A

Mirror defogger

Maintenance and Care

Owner Maintenance

*Some models.

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Mazda MX-5 (2018 year). Manual - part 26