2021 MAZDA MODEL 3 HATCHBACK fuse

No.Item Explanation
3 SOURCE SOURCE button:
The audio source can be switched each time the button is pressed.
In addition, when the button is pressed and held, the current au-
dio source is muted and the audio source selection screen is displayed.

(During Apple CarPlay™ or Android Auto™ playback)
Press and hold the SOURCE button to mute the current audio source.
4
Hang-up button:
(During a call)
Press the button to end the call.

(While receiving a call)
Press the button to refuse a call.
5
Talk/Pick-up button:
(While receiving a call)
Press the button to answer the call.
6
Mute button:
Press the button to mute.
Press it again to cancel the mute.
NOTE
If you press the mute button to mute an audio source which can be
paused, such as Apple CarPlay™, USB audio, or Bluetooth® audio,
while it is playing, the song play back pauses. Press the mute button
again to cancel the mute and the pause at the same time.
Interior Features
Mazda Connect
5-24
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6Maintenance and Care
How to keep your Mazda in top condition.
Essential Information................. 6-2 Introduction.......................... 6-2
Scheduled Maintenance............ 6-4 Scheduled Maintenance......... 6-4
Owner Maintenance............... 6-12 Owner Maintenance
Precautions......................... 6-12
Hood.................................. 6-13
Engine Compartment
Overview............................ 6-15
Engine Oil........................... 6-17
Engine Coolant.................... 6-20
Brake/Clutch Fluid............... 6-21
Washer Fluid....................... 6-22
Body Lubrication.................. 6-23
Wiper Blades....................... 6-23
Battery................................ 6-29
Key Battery Replacement...... 6-31
Tires.................................... 6-33
Light Bulbs...........................6-37
Fuses.................................. 6-40
Appearance Care.................... 6-48 Exterior Care....................... 6-48
Interior Care........................ 6-54
6-1
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Engine Compartment Overview
▼Engine Compartment Overview
SKYACTIV
-G 2.0 and SKYACTIV -G 2.5
1. Engine coolant reservoir
2. Engine oil dipstick
3. Brake/Clutch fluid reservoir
4. Battery
5. Fuse block
6. Cooling system cap
7. Engine oil-filler cap
8. Windshield washer fluid reservoir
Maintenance and Care
Owner Maintenance
6-15
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SKYACTIV-G 2.5T
1. Engine coolant reservoir
2. Engine oil dipstick
3. Brake fluid reservoir
4. Battery
5. Fuse block
6. Cooling system cap
7. Engine oil- filler cap
8. Windshield washer fluid reservoir
Maintenance and Care
Owner Maintenance
6-16
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▼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 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.
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 o ff.
2. Open the fuse panel cover.
Maintenance and Care
Owner Maintenance
6-40*Some models.
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3. Pull the fuse straight out with thefuse 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.
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

Maintenance and Care
Owner Maintenance
6-41
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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
6-42
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▼Fuse Panel Description
Fuse block (Engine compartment)
No. FUSE RAT
-
ING PROTECTED COMPONENT
F1 ――
F2 20 A Windshield wiper de-icer
*
F330 A Engine control system
20 A
―
F4 20 A S -VT
F5 40 A Engine control system
F6 20 A ―
Maintenance and Care
Owner Maintenance
*Some models.6-43
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