2020 Fiat 500 312 Fuse Box Diagram

Under the dashboard on the driver's side, down by the pedals and just left of the steering column, a press-fitted cover (A in the handbook's fig. 112) pulls straight off; the fuse puller is clipped inside it. Behind the cover are the fourteen MINI positions of the body computer.

The drawing follows Fiat's plate F0S0172 as the handbook prints it, landscape with the harness connector at the left: two rows of seven. The edition covering this model year is the one that arrived with the 1.0 FireFly mild hybrid in January 2020, and like every edition since the 2016 facelift it lists only the ten fuses an owner may change, so 12, 31, 32 and 50 are drawn as numbered but unrated sockets. The 5 A fuse for door-mirror demisting is not in this box at all — it has a holder of its own beside the diagnostic socket.

On the right-hand side of the engine compartment, beside the battery, under a cover held by a single screw: press screw A (the handbook's fig. 114) fully in, turn it slowly anticlockwise until it resists, let it come out of its seat, and slide cover B upwards out of the side guides. Refitting reverses that and ends with a clockwise turn.

Plate F0S0607 is drawn portrait as the handbook prints it — a column of fourteen MINI fuses at the left, a column of ten MAXI fuses beside it, the relay housings T02 to T31 through the middle and right, and the MINI stack F11, F17 and F22 at the top right with F08 and F85 below them. The March 2020 edition, the book for the 1.0 FireFly mild hybrid launched that January, omits F16 and F84 because the Hybrid has no Dualogic gearbox; the 1.2 was still on sale alongside it, so both positions are kept and marked as Dualogic-only. The other unrated numbers are general-protection fuses for the engine, gearbox, brakes, steering and body computer, which Fiat leaves to a dealership.