2017 MAZDA MX5 MIATA ECU

6 –55 Maintenance and Care
Owner MaintenanceReplacing 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 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.
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6 –65 Maintenance and Care
Appearance Care
Do not get any car wax on the
convertible top.
If you do, remove it with a good leather
cleaner or mild detergent (about 5%
solution). 
Too much treatment on the convertible
top can be as damaging as too little.
Follow the manufacturer's directions.
Do not overdo it! 
Let the convertible top dry completely
before lowering after applying treatment
or dressing.
Drain filter cleaning procedure
Drain filter
NOTE
If leaves or other matter block the drain
filter, water may enter the vehicle.
Clean the drain filter at least once a year. 1. Check the position of the drain filter
with your hand from behind the bow.
Drain filterBow
2. Remove the drain filter while pressing
the tab.
3. Remove leaves and other matter
accumulated in the drain filter.
4. Reinstall the drain filter in the reverse
order of the removal procedure.
CAUTION When installing the drain filter, make
sure that the drain filter is securely
attached to its designated position by
pushing it until the tab locks. Water
may enter the vehicle if the drain
filter is not secured to its designated
position.
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6 –71 Maintenance and Care
Appearance Care Cleaning the Window InteriorsIf the windows become covered with an
oily, greasy, or waxy film, clean them with
glass cleaner. Follow the directions on the
container.
CAUTION 
Do not scrape or scratch the inside of
the window glass. It could damage the
thermal filaments. 
When washing the inside of the window
glass, use a soft cloth dampened in
lukewarm water, gently wiping the
thermal filaments.
Use of glass cleaning products could
damage the thermal filaments.
Cleaning the Floor MatsRubber floor mats should be cleaned with
mild soap and water only.
WARNING Do not use rubber cleaners, such as tire
cleaner or tire shine, when cleaning
rubber floor mats:
Cleaning the rubber floor mats with
rubber cleaning products makes the
floor mats slippery.
This may cause an accident when
depressing the accelerator, brake, or
clutch (Manual transmission) pedal or
when getting in or out of the vehicle.
After removing the floor mats for cleaning,
always reinstall them securely (page
3 - 52 ).
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7 –4 If Trouble Arises
Flat Tire
*Some models. Jack *
To remove the jack
1. Remove the cover.

2. Turn the wing bolt and jack screw
counterclockwise.
Wing bolt
Jack screw To secure the jack
1. Insert the wing bolt into the jack with
the jack screw pointing back and turn
the wing bolt clockwise to temporarily
tighten it.
2. Turn the jack screw clockwise.
Wing bolt
Jack screw
3. 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.
4. Insert the cover tabs and install the
cover.
NOTE
Verify that the cover is securely installed.
Maintenance 
Always keep the jack clean. 
Make sure the moving parts are kept
free from dirt or rust. 
Make sure the screw thread is
adequately lubricated.
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7 –7 If Trouble Arises
Flat Tire6. Shake the sealant bottle to mix the
contents. Then extend the injection
hose.
Injection hose
CAUTION Do not shake the bottle excessively.
Otherwise, the sealant could spray out
of the injection hose, and if the sealant
contacts clothing or other objects, you
may not be able to remove it.
NOTE
The sealant hardens easily and injecting
it will be difficult under cold weather
conditions (0 °C (32 °F) or below). Warm
the sealant inside the vehicle to facilitate
injection.
7. Pull out the air compressor hose and
the air compressor plug from the air
compressor. Compressor hose 8. Install the air compressor hose which
was pulled out of the air compressor to
the injection valve of the bottle. Compressor hose
Injection hose
Injection
valve
CAUTION Make sure that the air compressor
switch is off before inserting the air
compressor hose to the injection valve
of the bottle. If the air compressor hose
is not installed to the injection valve
of the bottle securely, the sealant may
leak.
9. Remove the valve cap from the valve
of the flat tire, install the injection hose
to the tire valve, turn the sleeve to the
right, and tighten it.
Valve capValve
Injection hose
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7 –8 If Trouble Arises
Flat Tire 10. Install the bottle to the air compressor
and press it in until the left and right
tabs are engaged securely. Tabs
11. Insert the air compressor plug into the
accessory socket inside the vehicle and
switch the ignition to ACC.
Refer to Accessory Sockets on page
5-134 .
CompressorCompressor plug
CAUTION When inserting the air compressor
plug into or removing it from the
accessory socket, make sure that the
air compressor switch is off. When
turning the air compressor on/off, use
the air compressor switch. 12. The sealant is injected into the tire
when the air compressor is switched
on. After the sealant is injected
completely, wait until the tire inflation
pressure increases to the specified tire
inflation pressure.
NOTE
The inflation pressure may increase to
about 300 kPa (3.1 kgf/cm 2
, 3 bar, 43.5
psi) temporarily to inject the sealant
through the valve. Normally, the inflation
pressure decreases gradually and it
reaches the actual inflation pressure after
about 30 seconds.
WARNING Never use the air compressor above 300
kPa (3.1 kgf/cm 2
, 3 bar, 43.5 psi):
Using the air compressor at an
inflation pressure above 300 kPa (3.1
kgf/cm 2
, 3 bar, 43.5 psi) continuously
is dangerous. If the air compressor
overheats, hot air will be exhausted
and you could get burned.
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7 –21 If Trouble Arises
Flat Tire4. Turn the lug wrench counterclockwise
and lower the vehicle. 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.
5. Remove the tire blocks and store the
tools and jack.
6. Check the inflation pressure. Refer to
Tires on page 9-8 .
NOTE
(With tire pressure monitoring system)
Do not press the tire pressure monitoring
system set switch after installing the spare
tire. The switch is only to be pressed after
installing the repaired flat tire or installing
a replacement tire (page 4-18 ).
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7 –25 If Trouble Arises
Battery Runs Out1. Remove the battery cover.

2. Make sure the booster battery is 12
V and that its negative terminal is
grounded.
3. If the booster battery is in another
vehicle, do not allow both vehicles
to touch. Turn off the engine of the
vehicle with the booster battery and
all unnecessary electrical loads in both
vehicles.
4. Connect the jumper cables in the exact
sequence as in the illustration. 
Connect one end of a cable to the
positive terminal on the discharged
battery (1). 
Attach the other end to the positive
terminal on the booster battery (2). 
Connect one end of the other cable to
the negative terminal of the booster
battery (3). 
Connect the other end to the ground
point indicated in the illustration
away from the discharged battery (4).
5. Start the engine of the booster vehicle
and run it a few minutes. Then start the
engine of the other vehicle.
6. When finished, carefully disconnect the
cables in the reverse order described in
the illustration. 7. If the battery cover has been removed,
install it in the reverse order of
removal.
NOTE
Verify that the covers are securely
installed.
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