Ford Fiesta Fuse Box: What Each Fuse Does
From the 2019 Ford Fiesta owner's manual. 2 fuse boxes listed.
Engine Compartment Fuse Box
| Fuse | Amps | Circuit |
|---|---|---|
| F1 | 40 A | Anti-lock brake system module. |
| F1 | 60 A | Stability assist. |
| F2 | 40 A | Anti-lock brake system module. Cooling fan relay. |
| F2 | 60 A | High-speed cooling fan relay. 5 |
| F3 | 60 A | Passenger compartment fuse box. |
| F5 | – | Not used. |
| F7 | – | Not used. |
| F8 | – | Not used. |
| F14 | – | Not used. |
| F15 | – | Not used. |
| F16 | – | Not used. |
| F17 | – | Not used. |
| F18 | – | Not used. |
| F19 | 30 A | Fuel injectors. |
| F20 | – | Not used. |
| F21 | 7.5 A | Mass air flow sensor. 2 |
| F21 | 10 A | Fuel injectors. |
| F22 | 15 A | Powertrain control module. |
| F24 | 15 A | Ignition coil. 3 |
| F24 | 20 A | Ignition coil. 2 |
| F26 | 7.5 A | ECSS system. 4 |
| F26 | 15 A | Active grille shutter. 1 |
| F26 | 15 A | Water pump. 1 Air conditioning control module. 1 |
| F27 | – | Not used. |
| F28 | – | Not used. |
| F29 | – | Not used. |
| F30 | – | Not used. |
| F31 | – | Not used. |
| F32 | 60 A | Passenger compartment fuse box. |
| F33 | 60 A | Power windows. |
| F34 | 40 A | Transmission control module. 6 |
| F34 | 60 A | High speed cooling fan. 1 |
| F35 | 40 A | Anti-lock brake system with electronic stability control. |
| F40 | – | Not used. |
| F41 | 10 A | Air conditioning clutch. |
| F48 | 10 A | Left-hand front fog lamp. |
| F49 | 10 A | Right-hand front fog lamp. |
| F55 | 10 A | Left-hand high beam. |
| F56 | 10 A | Right-hand high beam. |
| R12 | – | Powertrain control module relay. |
| R13 | – | Headlamp high beam relay. |
| R43 | – | Not used. |
| R44 | – | Front fog lamp relay. |
| R45 | – | A/C clutch relay. |
| R46 | – | Not used. |
| R47 | – | Fuel pump relay. |
| R50 | – | High speed cooling fan. 1 |
| R51 | – | Start inhibit relay. |
| R52 | – | Blower motor relay. |
| R53 | – | Not used. |
Passenger Compartment Fuse Box
| Fuse | Amps | Circuit |
|---|---|---|
| F1 | 15 A | Ignition switch. |
| F3 | 7.5 A | Instrument cluster. |
| F5 | 15 A | Secondary on-board diagnostic control module A. |
| F6 | 10 A | Reversing lamps. |
| F8 | 7.5 A | Moonroof. |
| F11 | 20 A | Windshield wipers. |
| F12 | 7.5 A | Climate control. |
| F13 | 15 A | Rear window wiper. |
| F15 | 15 A | Exterior mirrors. |
| F16 | 5 A | Power windows. Heated seats. |
| F17 | 15 A | Stoplamps. |
| F18 | 10 A | Instrument cluster. |
| F19 | 7.5 A | Airbags. |
| F20 | 10 A | Electronic power assist steering. |
| F21 | 7.5 A | Instrument cluster. |
| F23 | 7.5 A | Transmission control unit. |
| F24 | 7.5 A | Audio unit. |
| F25 | 7.5 A | Heated exterior mirrors. |
| F26 | 7.5 A | Central locking system. |
| F27 | – | Not used. |
| F28 | – | Not used. |
| F29 | – | Not used. |
| F30 | – | Not used. |
| F31 | 30 A | Rear power windows. |
| F32 | 20 A | Battery back-up sounder. |
| F33 | 20 A | Rear auxiliary power points. Front auxiliary power points. |
| F34 | 30 A | Front power windows. |
| F35 | 20 A | Moonroof. |
| F36 | – | Not used. |
| R1 | – | Ignition relay. |
| R2 | – | Not used. |
| R3 | – | Not used. |
| R4 | – | Driver heated seat. |
| R5 | – | Passenger heated seat. |
Listings are copied as text from the manual's fuse tables (AI-assisted; every circuit name was matched against the cited pages 2026-10-18). Fuse layouts can differ by trim and year; check the label on the fuse box cover before replacing a fuse, and always use the same amp rating.
Confirm with your own manual, dipstick or door-jamb label.
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