Auto User Guide

2020 Mazda CX-30 Fuses and Fuse Box User Guide

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2020 Mazda CX-30 Fuses and Fuse Box User Guide

Fuse box locations and 2020 Mazda CX-30 fuses are covered in this tutorial. Discover crucial knowledge to detect and repair fuses to maintain your vehicle’s electrical systems.

2023 MAZDA CX-30 Specs, Price, Features, Mileage (Brochure)

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.
    Mazda CX-30 2020 Fuses 1
  3. Pull the fuse straight out with the fuse puller provided on the fuse block located in the engine compartment.
    2020 Mazda CX-30 Fuses 05
  4. Inspect the fuse and replace it if it is blown.
    Mazda CX-30 2020 Fuses 1

    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.
    2020 Mazda CX-30 Fuses 05
  3. If any fuse but the MAIN fuse is blown, replace it with a new one of the same amperage rating.
    2020 Mazda CX-30 Fuses 06

    • 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.

Fuse Panel Description
Fuse block (Engine compartment)

2020 Mazda CX-30 Fuses 08

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 ―
No. FUSE RATING 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 For protection of various circuits
F19 60 A Power steering system
F20 15 A Headlight (LH) 1
F21 15 A Headlight (RH) 1
F22 15 A Keyless system
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 Windshield washer
F30 15 A Accessory sockets
F31 15 A Horn
F32 15 A Headlights
F33 ― ―
F34 ― ―
F35 50A ABS, Dynamic stability control system
F36 ― ―
F37 40 A Rear window defogger
F38 50 A For protection of various circuits
No. FUSE RATING PROTECTED COMPONENT
F39 ― ―
F40 40 A Air conditioner
F41 ― ―
F42 20 A Windshield wipers
F43 30 A Cooling fan
F44 30 A Starter
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 light
F51 25 A Audio
F52 10 A Moonroof*
F53 15 A Engine control system
F54 15 A i-ACTIVSENSE
F55 50 A ―
F56 50 A ―

Fuse block (Left side)

2020 Mazda CX-30 Fuses 09

No. FUSE RATING PROTECTED COMPONENT
F1 ― ―
F2 ― ―
F3 ― ―
F4 15 A Power door locks (Driver)
F5 15 A Power door locks (Passenger)
F6 ― ―
F7 25 A Power liftgate*
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 Liftgate lock
No. FUSE RAT- ING PROTECTED COMPONENT
F16 15 A Illumination
F17 10 A Brake lights
F18 10 A Reverse lights
F19 10 A Rear turn signal lights
F20 10 A Taillights
F21 10 A Taillights
F22 7.5 A Air bag*
F23 ― ―
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