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| 2019 Mazda 3 |
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.
Replacing the fuses on the vehicle 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.
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| Fuse Box on the vehicle's left side |
3. Pull the fuse straight out with the fuse puller provided on the fuse block located in the engine compartment.
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| Fuse Puller |
4. Inspect the fuse and replace it if it is blown.
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| 1 - Normal Fuse , 2- Blown Fuse |
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 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.
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.
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| Fuse Block Under the Hood |
3. If any fuse but the MAIN fuse is blown, replace it with a new one of the same amperage rating.
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| 1- Normal Fuse , 2 - Blown Fuse |
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.
Engine compartment Fuse block
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| Engine compartment Fuse Panel Diagram |
No. .. FUSE RATING .. PROTECTED COMPONENT
F1 ― ―
F2 20 A Windshield wiper de-icer*
F3
30 A Engine control system
20 A ―
F4 20 A S-VT
F5 40 A Engine control system
F6 20 A ―
F1 ― ―
F2 20 A Windshield wiper de-icer*
F3
30 A Engine control system
20 A ―
F4 20 A S-VT
F5 40 A Engine control system
F6 20 A ―
F7 15A ― , 20 A Fuel pump
F8 15A Engine control system
F9 15A Transmission control system*
F10 15A Engine control system
F11 7.5A Air conditioner
F12 15A Engine control system
F13 15A ―
F14 20A Front seat warmer*
F15 20A ―
F16 15A 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 stability 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
F41 ― ―
F42 20 A Windshield wipers
F43 30 A Cooling fan
F44 30 A For protection of various circuits
F45 10 A Engine control system
F46 15 A Audio
F47 15 A For protection of various circuits
F48 7.5 A Air bag
F49 15 A Instrument cluster
F50 15 A Room lamp
F51 25 A Audio system
F52 10 A Moonroof*
F53 15 A Engine control system
F54 15 A i-ACTIVSENSE
F55 50 A ―
F56 50 A ― , 15A Water Pump
* Some Models
Left Side Fuse block
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| Left Side Fuse Panel Diagram |
No. ... FUSE RATING .. PROTECTED COMPONENT
F1 ― ―
F2 ― ―
F3 ― ―
F4 15 A Power door locks (Driver)
F5 15 A Power door locks (Passenger)
F6 ― ―
F7 ― ―
F8 ― ―
F9 30 A Power windows (Driver)
F10 30 A Power windows (Passenger)
F11 30 A Power seat (Driver)*
F12 ― ―
F13 15 A Audio
F14 ― ―
F15 15 A Back door lock
F16 15 A Illumination
F17 10 A Brake lights
F18 10 A Back lights
F19 10 A Rear turn signal lights
F20 10 A Taillights
F21 10 A Taillights
F22 7.5 A Electric steering lock*
F23 ― ―
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