Mazda 3 BP (2019 – 2026) Fuse Box Location & Diagrams
The Mazda 3 BP (2019–2026) features fuse boxes that protect essential electrical systems throughout the vehicle. Knowing their locations and fuse assignments makes it easier to identify electrical faults, replace blown fuses, and maintain key components safely. This blog covers fuse box locations, diagrams, ratings, and protected circuits.
Fuse Box Location
Passenger Compartment Fuse Box
It is located on the left side of the vehicle, behind the cover.
Engine Compartment Fuse Box
Fuse Box Diagrams
Passenger Compartment Fuse Box
| № | Amp | Description |
|---|---|---|
| F1 | — | Not Used |
| F2 | — | Not Used |
| F3 | — | Not Used |
| F4 | 15 A | Power door locks (Driver) |
| F5 | 15 A | Power door locks (Passenger) |
| F6 | — | Not Used |
| F7 | — | Not Used |
| F8 | — | Not Used |
| F9 | 30 A | Power windows (Driver) |
| F10 | 30 A | Power windows (Passenger) |
| F11 | 30 A | Power seat (Driver) (Some models) |
| F12 | — | Not Used |
| F13 | 15 A | Audio |
| F14 | — | Not Used |
| F15 | 15 A | 2019-2020: Back door lock 2021-2026: Liftgate lock |
| F16 | 15 A | Illumination |
| F17 | 10 A | Brake lights |
| F18 | 10 A | Back/Reverse lights |
| F19 | 10 A | Rear turn signal lights |
| F20 | 10 A | Taillights |
| F21 | 10 A | Taillights |
| F22 | 7.5 A | 2019-2020: Electric steering lock (Some models) 2021-2026: Airbag |
| F23 | — | Not Used |
Engine Compartment Fuse Box
| № | Amp | Description |
|---|---|---|
| F1 | — | Not Used |
| F2 | 20 A | Windshield wiper de-icer (Some models) |
| F3 | 30 A | Engine control system |
| F3 | 20 A | Not Used |
| F4 | 20 A | S-VT |
| F5 | 40 A | Engine control system |
| F6 | 20 A | Not Used |
| F7 | 15 A | Not Used |
| 20 A | Fuel pump | |
| F8 | 15 A | Engine control system |
| F9 | 15 A | Transmission control system (Some models) |
| F10 | 15 A | Engine control system |
| F11 | 7.5 A | Air conditioner |
| F12 | 15 A | Engine control system |
| F13 | 15 A | Not Used |
| F14 | 20 A | Front seat warmer (Some models) |
| F15 | 20 A | Not Used |
| F16 | 15 A | For protection of various circuits |
| F17 | — | Not Used |
| F18 | 15 A | 2019-2020: Accessory sockets 2021-2023: For protection of various circuits 2024-2026: Not Used |
| F19 | 60 A | Power steering system |
| F20 | 15 A | Headlight (LH) 1 |
| F21 | 15 A | Headlight (RH) 1 |
| F22 | 15 A | 2019-2020: For protection of various circuits 2021-2026: 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 | Windscreen washer |
| F30 | 15 A | Accessory sockets |
| F31 | 15 A | Horn |
| F32 | — | Not Used |
| F33 | — | Not Used |
| F34 | 10 A | 2019-2023: Not Used 2024-2026: i-ACTIVSENSE |
| F35 | 50 A | ABS, Dynamic stability control system |
| F36 | — | Not Used |
| F37 | 40 A | Rear window defogger |
| F38 | 50 A | For protection of various circuits |
| F39 | — | Not Used |
| F40 | 40 A | Air conditioner |
| F41 | — | Not Used |
| F42 | 20 A | Windshield wipers |
| F43 | 30 A | Cooling fan |
| F44 | 30 A | 2019-2020: For protection of various circuits 2021-2026: 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 lamp |
| F51 | 25 A | Audio system |
| F52 | 10 A | Moonroof (Some models) |
| F53 | 15 A | Engine control system |
| F54 | 15 A | i-ACTIVSENSE |
| F55 | 50 A | Not Used |
| F56 | 50 A | Not Used |
| 15 A | 2021-2026: Electric water pump |
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