light MAZDA MODEL 3 HATCHBACK 2020 Owners Manual (in English)

▼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
▼ 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 battery 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
(CR2032 or equivalent).
Maintenance and Care
Owner Maintenance
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The following conditions indicate that the
battery power is low:
The KEY warning indication/warning
light (red) in the instrument cluster turns
on and a message, “Low Key Fob
Battery. Replace Battery”, is displayed
on the multi-information display when
the ignition is switched OFF.
The system does not operate and the
operation indicator light on the
transmitter does not flash when the
buttons are pressed.
The system's operational range is
reduced.
Replacing the battery at an Authorized
Mazda Dealer is recommended to prevent
damage to the key. If replacing the battery
by yourself, follow the instruction.
Replacing the key battery
1. Remove the lower cover while pressing the knob in the direction of
the arrow.
2. Press in the tab to unlock the upper
cover.
3. Insert a tape-wrapped flatheadscrewdriver into the gap and slide it in
the direction of the arrow.
4. Twist the flathead s crewdriver in the
direction of the arrow and remove the
upper cover.
Maintenance and Care
Owner Maintenance
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▼Replacing a Tire
WA R N I N G
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.
1. New tread
2. Worn tread
3. Tread wear indicator

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. You should replace the
spare tire when you replace the other road
tires due to the aging of the spare tire. 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 8-23.
▼Temporary Spare Tire
Inspect the temporary spare tire at least
monthly to make su
re it is properly
inflated and stored.
NOTE
The temporary spare tire condition
gradually deteriorates even if it has not
been used.
The temporary spare tire is easier to
handle because of its construction which is
lighter and smaller than a conventional
tire. This tire should be used only for an
emergency and only for a short distance.

Use the temporary spare tire only until the
conventional tire is repaired, which should
be as soon as possible.
Refer to Tires on page 9-9.

CAUTION
 Do not use your temporary spare tire rim
with a snow tire or a conventional tire.
Neither will properly fit and could
damage both tire and rim.
Maintenance and Care
Owner Maintenance
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The temporary spare tire has a tread life
of less than 5,000 km (3,000 miles). The
tread life may be shorter depending on
driving conditions.
 The temporary spare tire is for limited
use, however, if the tread wear
solid-band indicator appears, replace the
tire with the same type of temporary
spare (page 6-33).
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. You should replace the
spare tire when you replace the other road
tires due to the aging of the spare tire. 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 8-23.
▼ Replacing a Wheel
WA R N I N G
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
Owner Maintenance
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Light Bulbs
▼Light Bulbs
Front
Ty p e A
1. Vanity mirror lights*
2. Overhead lights/ Front map lights
3. Side turn signal lights
*
4. Front side-marker lights
5. Parking lights
6. Headlights (High/Low beam)/ Daytime
running lights
7. Front turn signal lights
Ty p e B
1. Vanity mirror lights*
2. Overhead lights/ Front map lights
3. Side turn signal lights
*
4. Parking lights/Front side-marker lights
5. Headlights (High/Low beam)/ Daytime running lights
6. Front turn signal lights
Rear
4–Door
1. Trunk light
2. High-mount brake light
3. Overhead light (Rear)
4. Rear side-marker lights
5. Brake lights/Taillights
*
6. Rear turn signal lights
7. Brake lights/Taillights
8. Taillights
*
9. Reverse lights
10. License plate lights
5–Door
1. Luggage compartment light
2. High-mount brake light
3. Overhead light (Rear)
4. Rear side-marker lights
5. Rear turn signal lights
6. Brake lights/Taillights
7. Taillights
*
8. Reverse lights
9. License plate lights
Maintenance and Care
Owner Maintenance
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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
When replacing a bulb, contact an
Authorized Mazda Dealer if necessary.
Use the protective cover and carton for
the replacement bulb to dispose of the
old bulb promptly and out of the reach
of children.
For details regarding the installation
positions of the interior lights, refer to
the following:
Vanity mirror lights
Refer to Vanity Mirrors on page 5-34.
Overhead Lights/front map lights,
overhead light (rear), trunk light, and
luggage compartment light
Refer to Interior Lights on page 5-35.
▼ Replacing Exterior Light Bulbs
The exterior lights
have either LEDs or
normal bulbs.
Only the bulb for a parking lights/front
side-marker lights (type B) can be
replaced.
LED type
Headlights
Daytime running lights
Parking lights (Type A)
Front turn signal lights
Front side-marker lights (Type A)
Side turn signal lights*
High-mount brake light
Rear turn signal lights
Rear side-marker lights
Brake lights
Taillights
Reverse lights
License plate lights
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.
Bulb type
Parking lights/Front side-marker lights
(Type B)
1. Make sure the ignition is switched off, and the headligh t switch is off.
2. If you are changing the left bulb, start
the engine, turn the steering wheel all
the way to the right, and turn off
engine. If you are changing the right
bulb, turn the steering wheel to the left.
3. Pull the center of each plastic retainer
and remove the retainers.
1. Removal
2. Installation

Maintenance and Care
Owner Maintenance
6-36*Some models.
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4. Pull the center of each plastic retainerand remove the retainers.
1. Removal
2. Installation

5. Turn the screw counterclockwise and remove it, and then partially peel back
the mudguard.
6. Turn the socket and bulb assembly
counterclockwise and remove it.
7. Disconnect the bulb from the socket.
8. Install the new bulb in the reverseorder of the removal procedure.
▼Replacing Interior Light Bulbs
Overhead lights/Front map lights,
Overhead light (Rear), Vanity mirror
lights, Luggage compartment light (5–
Door)
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.
Trunk light (4–Door)
1. Press both sides o
f 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.
Maintenance and Care
Owner Maintenance
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Fuses
▼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.
1. Normal
2. 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. Consult 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 accessory socket 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
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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.
3. If any fuse but the MAIN fuse is
blown, replace it with a new one of the
same amperage rating .
1. Normal
2. Blown

WA R N I N G
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
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No.FUSE RAT‐
ING PROTECTED COMPONENT
F7 15 A
―
20 A Fuel pump
F8 15 A Engine control system
F9 15 A
Transmission control system
*
F10 15 A Engine control system
F11 7.5 A Air conditioner
F12 15 A Engine control system
F13 15 A ―
F14 20 A
Front seat warmer
*
F15 20 A ―
F16 15 A For protection of various circuits
F17 ― ―
F18 15 A Accessory sockets
F19 60 A Power steering system
F20 15 A Headlight (LH) 1
F21 15 A Headlight (RH) 1
F22 15 A For protection of various circuits
F23 30 A ABS, Dynamic st ability control system
F24 15 A Headlight (LH) 2
F25 15 A Headlight (RH) 2
F26 7.5 A On board diagnostics
F27 25 A For protection of various circuits
F28 25 A For protection of various circuits
F29 15 A Windscreen washer
F30 15 A Accessory sockets
F31 15 A Horn
F32 ― ―
F33 ― ―
F34 ― ―
F35 50A ABS, Dynamic stability control system
F36 ― ―
F37 40 A Rear window defogger
F38 50 A For protection of various circuits
F39 ― ―
F40 40 A Air conditioner
Maintenance and Care
Owner Maintenance
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