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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.

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No.FunctionAmpDescription
12Not listed in the 2020-2023 handbooks (the right dipped-beam fuse in the pre-facelift editions); replacement by a Fiat Dealership
135 AMINIHeadlight levelling (alignment corrector), versions and markets where fitted
31Not listed in the 2020-2023 handbooks; replacement by a Fiat Dealership
32Not listed in the 2020-2023 handbooks (the interior-lights fuse in the pre-facelift editions); replacement by a Fiat Dealership
3615 AMINIDiagnostic socket (EOBD), radio, climate control
375 AMINIBrake-light switch, instrument panel node
3815 AMINICentral door locking
4315 AMINIWindscreen and rear-window washer pump
4720 AMINIDriver's electric window
4820 AMINIPassenger's electric window
495 AMINIParking sensors, switch backlighting, electric door mirrors
50Not listed in the 2020-2023 handbooks; replacement by a Fiat Dealership
517.5 AMINIClimate control, brake lights, clutch switch, electric roof, electric door mirrors
535 AMINIInstrument 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.

T07T06T09T08T31T30T17T20T14T19T02T03T05T10120202023456730303083030309101010101115151514202020157.57.57.516171819303030202122232415151530818283101010842020208587
No.FunctionAmpDescription
1Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership
220 AMAXIHI-FI audio amplifier
3Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership
4Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership
5Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership
6Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership
7Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership
830 AMAXIClimate control blower fan
930 AMINIHeadlight washers
1010 AMINIHorns
11Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership
1415 AMINIMain-beam headlights
1520 AMINIElectric roof motor: the folding soft top of the 500C, or the opening sunroof where fitted
167.5 AMINIDualogic automated-gearbox control unit, ignition-switched supply; 1.2 petrol with the Dualogic gearbox only, not fitted on the 1.0 Hybrid
17Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership
18Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership
19Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership
2030 AMINIHeated rear window
21Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership
22Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership
23Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership
24Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership
3015 AMINIFront fog lights
81Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership
82Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership
83Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership
8410 AMINIDualogic automated-gearbox control unit; 1.2 petrol with the Dualogic gearbox only, not fitted on the 1.0 Hybrid
8520 AMAXIFront power socket, with or without the cigar lighter
87Not listed in the 2020-2023 handbooks; general-protection fuse, replacement by a Fiat Dealership