Ford Focus 2003 Fuse Box Info
Fuse box location:
The fuse panel is located below and to the left of the steering wheel by the brake pedal. Remove the panel cover to access the fuses.
Engine compartment fuse box:
The power distribution box is located in the engine compartment.
Fuse Box Diagram | Layout
Passenger compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| R17 | - | Starter |
| R18 | - | Rear intermittent wiper relay |
| R19 | - | Front intermittent wiper relay |
| R20 | - | Not used |
| R21 | - | Not used |
| R22 | - | Decklid/Liftgate release relay |
| R23 | - | Horn |
| R24 | - | Battery saver |
| R25 | - | Rear defrost |
| 30 | 10 A | Light switch |
| 31 | 15 A | Radio |
| 32 | 15 A | Turn signal |
| 33 | 20 A | Horn, Power seats (SVT only) |
| 34 | 20 A | Power sunroof |
| 35 | 7.5 A | Interior lamps, power mirrors |
| 36 | 7.5 A | A/C switch, Hazard flasher, Instrument cluster |
| 37 | 25 A | Decklid/Liftgate release |
| 38 | - | Not used |
| 39 | - | Not used |
| 40 | 10 A | Backup lamps (automatic transaxle) |
| 41 | 7.5 A | Radio and cluster (accessory) |
| 42 | 15 A | Stop lamps |
| 43 | 15 A | Rear wiper |
| 44 | 20 A | Fog lamps |
| 45 | 7.5 A | Recirculated air, air conditioning |
| 46 | 7.5 A | ABS |
| 47 | 20 A | Cigar lighter, Rear power point (SVT only) |
| 48 | 10 A | Data link connector |
| 49 | 25 A | Rear defrost |
| 50 | 7.5 A | Heated mirror, Heated backlite indicator |
| 51 | - | Not used |
| 52 | 15 A | Heated seats |
| 53 | 10 A | Backup lamps (manual transaxle) |
| 54 | 25 A | Rear power windows |
| 55 | 25 A | Front power windows |
| 56 | 20 A | Front wipers |
| 57 | 7.5 A | Position and side lights (right) |
| 58 | 7.5 A | Position and side lights (left) |
| 59 | 7.5 A | Light switch (headlamps) |
| 60 | 7.5 A | Air bag module |
| 61 | 7.5 A | PATS modules, Instrument cluster |
| 62 | 7.5 A | Licence plate lamps |
| 63 | 20 A | Power locks (GEM) |
Engine compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 | 40 A | Main power supply to electrical system |
| 2 | 30 A | Engine cooling fan (A/C) 2nd fuse |
| 3 | 30 A | Cooling fan (2.0L engine only) |
| 4 | 30 A | Air pump motor |
| 5 | 30 A | Cooling fan 2 (2.0L engine only) |
| 6 | 50 A | Engine cooling fan (A/C) 1st fuse |
| 7 | 40 A | Main power supply to electrical system |
| 8 | 30 A | Ignition switch, Starter |
| 9 | 20 A | Engine management |
| 10 |
10 A (2.0L engine only) 1 A (2.3L engine only) |
Battery voltage sensor |
| 11 | 30 A | ABS |
| 12 | 15 A | Fuel pump |
| 13 | - | Not used |
| 14 | - | Not used |
| 15 | 10 A | AC clutch solenoid |
| 16 |
10 A 15 A |
Low beam (left side - conventional headlamps) Low beam (left side - HID headlamps) |
| 17 |
10 A 15 A |
Low beam (right side - conventional headlamps) Low beam (right side - HID headlamps) |
| 18 |
10 A (2.0L engine only) 15 A (2.3L engine only) |
Heated oxygen sensor |
| 19 | - | Not used |
| 20 | 10 A | Engine module |
| 21 | 20 A | ABS |
| 22 | 20 A | Low beam (DRL) |
| 23 | 10 A | Cooling fan (2.3L engine only) |
| 24 | 30 A | Subwoofer |
| 25 | - | Not used |
| 26 | - | Not used |
| 27 | 15 A | High beams (right and left) |
| 28 | - | Not used |
| 29 | - | Not used |
| 64 | 40 A | Heater blower motor |
| R1 | - | Ignition relay |
| R2 | - | Air pump motor relay (2.3L engine only) |
| R3 | - | Cooling fan (Run-on fan) relay (2.3L engine only) |
| R4 | - | Not used |
| R5 | - | High beams relay |
| R6 | - | Low beams relay |
| R7 | - | Fuel pump relay |
| R8 | - | Engine management relay |
| R9 | - | Cooling fan relay (2.0L engine only) |
| R10 | - | Cooling fan 2 relay (2.0L engine only) |
| R11 | - | Air conditioning relay |
| R12 | - | Daytime Running Lamps (DRL) relay |
| R13 | - | Fog lamps relay |
| R14 | - | HID lamps (SVT only) |
| R15 | - | Cooling fan high speed (A/C only) relay (2.0L engine only) |
| R16 | - | Cooling fan low speed relay |
| D1 | - | PCM diode |
| D2 | - | Cooling fan diode |
| D3 | - | A/C clutch diode |
