2023 Mazda CX-30 Fuses and Fuse Box | How to fix a blown fuse
The 2023 Mazda CX-30’s intricate electrical system relies heavily on fuses and fuse boxes to protect various components from electrical overloads. The fuse box serves as a protective hub, containing a series of fuses designed to short out the electrical circuit if a component draws too much current, preventing damage and potential electrical fires.
The Mazda CX-30 fuse box is conveniently located for easy access, typically in the engine compartment or interior cabin. Each fuse is labeled with the component it protects, allowing users to quickly determine the source of an electrical problem. Whether you have a faulty interior light, a non-responsive power window, or problems with the entertainment system, this guide will walk you through the process of troubleshooting and resolving the issue by checking and replacing the appropriate fuse.
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.
- Make sure the ignition is switched off, and other switches are off.
- Open the fuse panel cover.
- Pull the fuse straight out with the fuse puller provided on the fuse block located in the engine compartment.
- Inspect the fuse and replace it if it is blown.
- Normal
- Blown
- 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.
- 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:
- Make sure the ignition is switched off, and other switches are off.
- Remove the fuse block cover.
- 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 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.
- Reinstall the cover and make sure that it is securely installed.
Fuse Panel Description
Fuse block (Engine compartment)
| No. | FUSE RAT- ING | PROTECTED COMPONENT |
| F1 | ― | ― |
| F2 | 20 A | Windshield wiper de-icer* |
| F3 | 30 A | Engine control system |
| F4 | 20 A | S-VT |
| F5 | 40 A | Engine control system |
| F6 | ― | ― |
| F7 | 20 A | Fuel pump |
| No. | FUSE RAT- ING | PROTECTED COMPONENT |
| 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 | ― | ― |
| F14 | 20 A | Front seat warmer* |
| F15 | ― | ― |
| 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 |
| F39 | ― | ― |
| F40 | 40 A | Air conditioner |
| No. | FUSE RAT- ING | PROTECTED COMPONENT |
| 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 | ― | ― |
| F56 | 15 A | Electric water pump* |
Fuse block (Left side)
| No. | FUSE RAT- ING | 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 | ― | ― |
FAQs
A fuse is a protective device that stops the flow of electrical current when a circuit overloads. It protects electrical components and reduces the risk of electrical fires.
To locate the fuse box, refer to your vehicle’s owner’s manual. It is usually located in the engine compartment or inside the vehicle’s cabin.
Look for a visible broken or melted wire inside the fuse. Furthermore, the metal strip in the middle of the fuse could be severed
Most fuse boxes include a fuse puller tool. If not, use a pair of needle-nose pliers to grip and remove the fuse.
No, always replace a blown fuse with one that has the same amperage rating. Using the wrong amp fuse can cause electrical problems or damage.
Check your vehicle’s owner’s manual or the fuse box cover for a fuse diagram that includes the amperage rating of each fuse.
To remove and replace a blown fuse, use a fuse puller or pliers to gently pull it out. Insert a new fuse with the same amperage into the same slot.
If the fuse blows again after replacement, it could indicate an underlying issue. Consult a professional mechanic to diagnose and resolve the issue.
Disconnecting the battery is not always necessary, but it can help prevent electrical shocks when working on the fuse box.
No, using a higher amp fuse can result in electrical damage and even a fire. Always follow the recommended amperage.
If your car’s fuses keep blowing, it could be due to a short circuit or a malfunctioning component in the electrical system. Have a professional inspect your vehicle.
It is a good idea to check your fuses on a regular basis or whenever you notice any electrical problems in your vehicle.
Some vehicles have spare fuses stored in the fuse box. Check your owner’s manual for information specific to your vehicle.
No, fuses are meant to be replaced, not repaired. Trying to repair a fuse can be dangerous.
If you can’t identify or fix the problem, seek help from a qualified mechanic or dealership.
Useful Links
View Full PDF: 2023 Mazda cx-30 User Manual| Auto User Guide
2023 MAZDA CX-30 Specs, Price, Features, Mileage (Brochure)
2023 Mazda CX-30 Instrument Cluster System | How to use display