Mazda MX-5 (2018) – fuse box diagram
Year of production: 2018
Fuse block (Engine compartment)
| Position | Description | Fuse rating [A] | Protected component |
| 1 | AUDIO DCDC REG | 30 | Audio system |
| 2 | IG2 | 30 | For protection of various circuits |
| 3 | INJECTOR ENG. SUB | 30 | Engine control system* |
| 4 | SCR1 EVVT | 20 | Engine control system* |
| 5 | P.WINDOW1 | 30 | Power windows |
| 6 | IG1 2 | 30 | For protection of various circuits |
| 7 | — | — | — |
| 8 | ADD FAN DE | 50 | Cooling fan |
| 9 | DEFOG | 40 | Rear window defogger* |
| 10 | DCDC DE | 40 | — |
| 11 | EPB R | 20 | Electric parking brake (EPB) (RH) |
| 12 | EPB L | 20 | Electric parking brake (EPB) (LH) |
| 13 | CABIN.+B | 50 | For protection of various circuits |
| 14 | FAN GE | 30 | Cooling fan* |
| 15 | ENG.MAIN | 40 | Engine control system |
| 16 | ABS/DSC M | 50 | ABS, Dynamic stability control system |
| 17 | HEATER | 40 | Air conditioner* |
| 18 | WIPER | 20 | Front window wiper and washer |
| 19 | FAN DE | 50 | Cooling fan* |
| 20 | ADD FAN GE | 30 | Cooling fan* |
| 21 | ENGINE3 | 15 | Engine control system |
| 22 | ENGINE2 | 15 | Engine control system |
| 23 | AUDIO2 | 7,5 | Audio system |
| 24 | METER2 | 10 | — |
| 25 | SRS1 | 7,5 | Air bag |
| 26 | METER1 | 10 | Instrument cluster |
| 27 | ENGINE.IG1 | 7,5 | Engine control system |
| 28 | AT | 15 | Transaxle control system*, Ignition switch |
| 29 | H/CLEAN | 20 | — |
| 30 | A/C | 7,5 | Air conditioner |
| 31 | AT PUMP | 15 | — |
| 32 | HORN | 15 | Horn |
| 33 | R.WIPER | 15 | Theft-deterrent system |
| 34 | H/L HI | 20 | Headlight high beam |
| 35 | — | — | — |
| 36 | WIPER.DEI | 20 | Windshield wiper de-icer |
| 37 | ENG.+B | 7,5 | Engine control system |
| 38 | H/L LOW L | 15 | Headlight low beam (LH) |
| 39 | GLOW SIG | 5 | — |
| 40 | ENGINE1 ENGINE4 | 15 | Engine control system |
| 41 | C/U IG1 | 15 | Engine control system |
| 42 | ST.HEATER | 15 | Heated steering wheel |
| 43 | — | — | — |
| 44 | AUDIO1 | 25 | Audio system |
| 45 | ABS/DSC S | 30 | ABS, Dynamic stability control system |
| 46 | FUEL PUMP | 15 | Fuel system* |
| 47 | FUEL WARM | 25 | Fuel warmer |
| 48 | TAIL | 15 | Taillights, License plate lights |
| 49 | SCR2 FUEL PUMP2 | 25 | Fuel system* |
| 50 | HAZARD | 25 | Hazard warning flashers, Turn signal lights/Front side-marker lights, Parking lights |
| 51 | H/L LOW R | 15 | Headlight low beam (RH) |
| 52 | OUTLET | 25 | Accessory sockets |
| 53 | STOP | 10 | Brake lights |
| 54 | ROOM | 25 | Overhead light |
| * Some models | |||
Fuse block (Left side)
| Position | Description | Fuse rating [A] | Protected component |
| 1 | P.SEAT D | 30 | Power seat* |
| 2 | P.SEAT P1 | 30 | Power seat* |
| 3 | R.SEAT W1 | 20 | Seat warmer* |
| 4 | P.WINDOW2 | 25 | Power windows |
| 5 | SRS2/ESCL | 15 | Air bag/Electric steering lock |
| 6 | D.LOCK | 25 | Power door locks |
| 7 | SEAT WARM | 20 | Seat warmer* |
| 8 | SUNROOF | 10 | Moonroof* |
| 9 | R.OUTLET | 15 | — |
| 10 | MIRROR | 7,5 | Power control mirror |
| 11 | AT IND | 7,5 | AT shift indicator |
| 12 | INTERIOR1 | 15 | For protection of various circuits |
| 13 | INTERIOR2 | 10 | Overhead light |
| 14 | R.OUTLET2 | 15 | Accessory sockets |
| 15 | USB | 7,5 | USB power outlet |
| 16 | SCR3 | 15 | Engine control system* |
| 17 | SCR4 | 15 | Engine control system* |
| 18 | AUDIO3 | 15 | Audio system* |
| 19 | R.SHADE | 7,5 | — |
| 20 | M.DEF | 7,5 | Mirror defogger |
| 21 | — | — | — |
| * Some models | |||
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.