2021 Fiat 500 312 Fuse Box Diagram
The 2021 Fiat 500 (312) has 2 fuse boxes. Choose the one you’re looking at.
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Dashboard fuse box
Fourteen MINI fuses belonging to the body computer sit in the driver's footwell area, low under the fascia to the left of the steering column and next to the pedal box. The cover is a press fit and comes away by hand; the fuse puller travels inside it.
Plate F0S0172 is drawn the way Fiat prints it, on its side with the connector at the left edge, the numbers running 48, 43, 36, 38, 53, 32, 12 along the top row and 47, 31, 49, 37, 51, 50, 13 along the bottom. No later handbook edition was issued for the 2021 cars, so the March 2020 book still applies: F13 is the headlight alignment corrector at 5 A, F36 the diagnostic socket, radio and climate control at 15 A, and the four positions the tables skip stay unrated.
| No. | Function | Amp | Description |
|---|---|---|---|
| 12 | Not listed in the 2020-2023 handbooks (the right dipped-beam fuse in the pre-facelift editions); replacement by a Fiat Dealership | ||
| 13 | 5 AMINI | Headlight levelling (alignment corrector), versions and markets where fitted | |
| 31 | Not listed in the 2020-2023 handbooks; replacement by a Fiat Dealership | ||
| 32 | Not listed in the 2020-2023 handbooks (the interior-lights fuse in the pre-facelift editions); replacement by a Fiat Dealership | ||
| 36 | 15 AMINI | Diagnostic socket (EOBD), radio, climate control | |
| 37 | 5 AMINI | Brake-light switch, instrument panel node | |
| 38 | 15 AMINI | Central door locking | |
| 43 | 15 AMINI | Windscreen and rear-window washer pump | |
| 47 | 20 AMINI | Driver's electric window | |
| 48 | 20 AMINI | Passenger's electric window | |
| 49 | 5 AMINI | Parking sensors, switch backlighting, electric door mirrors | |
| 50 | Not listed in the 2020-2023 handbooks; replacement by a Fiat Dealership | ||
| 51 | 7.5 AMINI | Climate control, brake lights, clutch switch, electric roof, electric door mirrors | |
| 53 | 5 AMINI | Instrument panel node |
Engine compartment junction box
The junction box shares the right-hand side of the engine bay with the battery. Its lid is released by the captive screw at the corner: push the screw in, turn it anticlockwise until it will go no further, release it, then slide the lid up out of its guides. A second copy of the fuse numbers is moulded into the lid.
Twenty-nine positions are drawn as plate F0S0607 prints them, top to bottom. The MINI column reads 19, 14, 10, 15, 18, 23, 30, 21, 09, 84, 20, 16, 24, 87; the MAXI column beside it 07, 01, 04, 05, 06, 83, 03, 82, 81, 02; and the group at the right is the MINI stack 11, 17, 22 above the MAXI pair 08 and 85. Fourteen relays carry the T-numbers printed on the plate itself. F16 and F84 belong to the 1.2 with the Dualogic automated gearbox, still catalogued in some markets this year; the remaining unrated numbers are dealership fuses.
| No. | Function | Amp | Description |
|---|---|---|---|
| 1 | Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership | ||
| 2 | 20 AMAXI | HI-FI audio amplifier | |
| 3 | Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership | ||
| 4 | Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership | ||
| 5 | Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership | ||
| 6 | Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership | ||
| 7 | Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership | ||
| 8 | 30 AMAXI | Climate control blower fan | |
| 9 | 30 AMINI | Headlight washers | |
| 10 | 10 AMINI | Horns | |
| 11 | Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership | ||
| 14 | 15 AMINI | Main-beam headlights | |
| 15 | 20 AMINI | Electric roof motor: the folding soft top of the 500C, or the opening sunroof where fitted | |
| 16 | 7.5 AMINI | Dualogic automated-gearbox control unit, ignition-switched supply; 1.2 petrol with the Dualogic gearbox only, not fitted on the 1.0 Hybrid | |
| 17 | Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership | ||
| 18 | Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership | ||
| 19 | Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership | ||
| 20 | 30 AMINI | Heated rear window | |
| 21 | Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership | ||
| 22 | Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership | ||
| 23 | Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership | ||
| 24 | Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership | ||
| 30 | 15 AMINI | Front fog lights | |
| 81 | Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership | ||
| 82 | Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership | ||
| 83 | Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership | ||
| 84 | 10 AMINI | Dualogic automated-gearbox control unit; 1.2 petrol with the Dualogic gearbox only, not fitted on the 1.0 Hybrid | |
| 85 | 20 AMAXI | Front power socket, with or without the cigar lighter | |
| 87 | Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership |