2019 MAZDA MODEL MX-5 MIATA electrical

This is for improved exhaust gas
purification and does not indicate any
parts defect.
Engine-starting is controlled by the
spark ignition system.
This system meets all Canadian
Interference-Causing Equipment
Standard requirements regulating the
impulse electrical field strength of radio
noise.
1. Make sure you are carrying the key.
2. Occupants should fasten their seat belts.
3. Make sure the parking brake is on.
4. Continue to press the brake pedal firmly until the engine has completely
started.
5. (Manual transmission)
Continue to press the clutch pedal
firmly until the engine has completely
started.
(Automatic transmission)
Put the vehicle in park (P). If you must
restart the engine while the vehicle is
moving, shift into neutral (N).
NOTE
(Manual transmission)
The starter will not operate if the
clutch pedal is not depressed
sufficiently.
(Automatic transmission)
The starter will not operate if the
selector lever is not in P or N and the
brake pedal is not depressed
sufficiently.
6. Verify that the KEY indicator light
(green) in the instr ument cluster and
the push button start indicator light
(green) illuminate.

Indicator light
Push button start
KEY indicator light
(green)/ KEY
warning light (red)
NOTE
If the push button start indicator
light (green) flashes, make sure that
the key is being carried.
If the push button start indicator
light (green) flashes with the key
being carried, touch the key to the
push button start and start the
engine. Refer to Engine Start
Function When Key Battery is Dead
on page 4-8.
When Driving
Start/Stop Engine
4-6
MX-5_8GV5-EA-18E_Edition3 2018-7-17 15:48:16

NOTE
To prevent the battery from being
discharged, do not leave the trunk open
for a long period when the engine is not
running.
▼Illuminated Entry System
The overhead lights turn on when any of
the following operations is done with the
overhead light switch in the DOOR
position.
The driver's door i
s unlocked with the
ignition is switched OFF.
The ignition is switched OFF with all
doors closed.
NOTE
The illumination time differs depending
on the operation.
Battery saver
If an interior light is left on with the
ignition switched OFF, the light is
turned off automatically after about 30
minutes to prevent battery depletion.
The operation of the illuminated entry
system can be changed.
Refer to Personalization Features on
page 9-9.
Accessory Socket
The accessory socket is located deep in the
back of the footwell on the passenger side.
Only use genuine Mazda accessories or
the equivalent requiring no greater than
120 W (DC 12 V, 10 A).
The ignition must be switched to ACC or
ON.

CAUTION
 To prevent accessory socket damage or
electrical failure, pay attention to the
following:
 Do not use accessories that require
more than 120 W (DC 12 V, 10 A).
 Do not use accessories that are not
genuine Mazda accessories or the
equivalent.
 Close the cover when the accessory
socket is not in use to prevent foreign
objects and liquids from getting into
the accessory socket.
 Correctly insert the plug into the
accessory socket.
 Do not insert the cigarette lighter into
the accessory socket.
Interior Features
Interior Equipment
5-92
MX-5_8GV5-EA-18E_Edition3 2018-7-17 15:48:16

Noise may occur on the audio playback
depending on the device connected to
the accessory socket.
 Depending on the device connected to
the accessory socket, the vehicle's
electrical system may be affected, which
could cause the warning light to
illuminate. Disconnect the connected
device and make sure that the problem is
resolved. If the problem is resolved,
disconnect the device from the socket
and switch the ignition off. If the problem
is not resolved, consult an Authorized
Mazda Dealer.
NOTE
To prevent discharging of the battery, do
not use the socket for long periods with the
engine off or idling.
Interior Features
Interior Equipment
5-93
MX-5_8GV5-EA-18E_Edition3 2018-7-17 15:48:16

NOTE
If you elect to perform maintenance yourself or have your vehicle serviced at a location
other than an Authorized Mazda Dealer, Mazda requires that all fluids, parts and materials
must meet Mazda standards for durability and performance as described in this manual.

Claims against the warranty resulting from lack of maintenance, as opposed to defective
materials or authorized Mazda wo rkmanship, will not be honored.

Any auto repair shop using parts equivalent to your Mazda's ori ginal equipment may
perform maintenance. But we recommend that it always be done by an Authorized
Mazda Dealer using ge nuine Mazda parts.
Selecting “Maintenance Monitor” enables the system to notify yo u of your vehicle's
approaching inspection/servicing period (page 6-15).

The malfunction diagnosis connector is designed exclusively for connecting the specially
designed device to perform on-board diagnosis.
Do not connect any devices other than the specially designed ma lfunction diagnosis devices
for servicing. If any device othe r than the malfunction diagnosis device is connected, it may
affect the vehicle's electrical devices or lead to damage such as battery depletion.
Malfunction
diagnosis
connector
Maintenance and Care
Essential Information
6-3
MX-5_8GV5-EA-18E_Edition3 2018-7-17 15:48:16

▼Battery Maintenance
To get the best service from a battery:
Keep it securely mounted.
Keep the top clean and dry.
Keep terminals and connections clean,
tight, and coated with
petroleum jelly or
terminal grease.
Rinse off spilled electrolyte immediately
with a solution of water and baking
soda.
If the vehicle will not be used for an
extended time, disconnect the battery
cables and charge the battery every 6
weeks.
▼ Battery Replacement
Contact an Authorized Mazda Dealer for a
battery replacement purchase.
Key Battery Replacement
If the buttons on the transmitter are
inoperable and the operation indicator
light does not flash, the battery may be
dead.
Replace with a new b
attery before the
transmitter becomes unusable.
CAUTION
 Make sure the battery is installed
correctly. Battery leakage could occur if it
is not installed correctly.
 When replacing the battery, be careful
not to touch any of the internal circuitry
and electrical terminals, bend the
electrical terminals, or get dirt in the
transmitter as the transmitter could be
damaged.
 There is the danger of explosion if the
battery is not correctly replaced.
 Dispose of used batteries according to
the following instructions.
 Insulate the plus and minus terminals
of the battery using cellophane or
equivalent tape.
 Never disassemble.
 Never throw the battery into fire or
water.
 Never deform or crush.
 Replace only with the same type battery
(CR2025 or equivalent).
Maintenance and Care
Owner Maintenance
6-33
MX-5_8GV5-EA-18E_Edition3 2018-7-17 15:48:16

3. Pull the center of each plastic retainerand remove the retainers, and then
partially peel back the mudguard.

Removal
Installation
4. Remove the unit by pressing the tab onthe unit with your finger and pulling
the unit forward.

5. Detach the electrical connector from
the unit by pulling it to the rear.

6. Install the new side turn signal unit inthe 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
Maintenance and Care
Owner Maintenance
6-43
MX-5_8GV5-EA-18E_Edition3 2018-7-17 15:48:16

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 isblown.
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.
Maintenance and Care
Owner Maintenance
6-49
MX-5_8GV5-EA-18E_Edition3 2018-7-17 15:48:16

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 itand sliding it to the rear.
3. If any fuse but the MAIN fuse isblown, 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.
Maintenance and Care
Owner Maintenance
6-50
MX-5_8GV5-EA-18E_Edition3 2018-7-17 15:48:16