Ford Mustang 2021 Fuse Box Info
Passenger compartment fuse box location:
The fuse panel is in the right-hand side of the passenger footwell behind a trim panel and plastic key code card.
Engine compartment fuse box location:
The fuse box is in the front right of the engine compartment.
Fuse Box Diagram | Layout
Passenger compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 | - | Not used |
| 2 | 10 A | Power windows, Electrochromic mirror, Power door locks. |
| 3 |
7.5 A - |
Power mirrors (base), Memory seats (base) Not used (GT500) |
| 4 | 20 A | Not used (spare) |
| 5 | - | Not used |
| 6 | 10 A | Not used (spare) |
| 7 | 10 A | Not used (spare) |
| 8 | 5 A | Telematic control unit - modem |
| 9 | 5 A | Not used |
| 10 | - | Not used |
| 11 | - | Not used |
| 12 | 7.5 A | Electronic control panel, Gateway module, Gear shift module (GT500) |
| 13 | 7.5 A | Steering column control module, Instrument cluster |
| 14 | 15 A | Not used |
| 15 | 15 A | SYNC, Gauges |
| 16 | - | Not used |
| 17 |
7.5 A - |
Headlamp leveling switch (base) Not used (GT500) |
| 18 | 7.5 A | Not used |
| 19 | 5 A | Not used |
| 20 | 5 A | Intrusion sensor module |
| 21 | 5 A | In-vehicle temperature and humidity sensor |
| 22 | 5 A | Auxiliary body module |
| 23 | 30 A | Amplifier |
| 24 | 30 A | Vehicle dynamics module |
| 25 | 20 A | Ambient lighting module (base), Auxiliary body module |
| 26 | 30 A | Right-hand front-window motor (power distribution module), Passenger door control unit |
| 27 |
30 A - |
Left-hand rear-window power (base) Not used (GT500) |
| 28 |
30 A - |
Right-hand rear-window power (base) Not used (GT500) |
| 29 | 15 A | Gateway module (base), Not used (spare) (GT500) |
| 30 | 5 A | Not used (spare) |
| 31 | 10 A | Remote keyless entry |
| 32 | 20 A | Audio unit |
| 33 | - | Not used |
| 34 | 30 A | Run-start bus |
| 35 |
5 A - |
Power distribution box run/start relay (base) Not used (GT500) |
| 36 |
15 A - |
Front camera (base) Not used (GT500) |
| 37 |
20 A - |
Heated steering wheel module (base). Not used (GT500) |
Engine compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 |
60 A* - |
Electronic fan 1 (GT500) Not used (base) |
| 2 | - | Not used |
| 3 |
30 A* - |
Electronic fan 1 (base) Not used (GT500) |
| 4 |
40 A* - |
Electronic fan 3 (base) Not used (GT500) |
| 5 | 50 A* | Automatic brake system pump |
| 6 | 50 A* | Body control module |
| 7 | 60 A* | Body control module |
| 8 | 50 A* | Body control module |
| 9 | 40 A* | Rear window defroster |
| 10 | 40 A* | Blower motor |
| 11 | 30 A** | Left-hand front window |
| 12 | 30 A** | Driver seat |
| 13 | 30 A** | Passenger seat |
| 14 | 30 A** | Climate-controlled seat module |
| 15 |
20 A** - |
Convertible top slave motor (base) Not used (GT500) |
| 16 |
15 A** - |
Charge air cooler pump (GT500) Not used (base) |
| 17 |
20 A** - |
Convertible top master motor (base) Not used (GT500) |
| 18 | - | Not used |
| 19 |
20 A*** 10 A*** |
Steering column lock relay (base) Transmission control unit (GT500) |
| 20 | 10 A*** | Brake on-off switch |
| 21 | 20 A*** | Horn |
| 22 | 10 A*** | Powertrain control module relay |
| 23 | 10 A*** | Air conditioning clutch |
| 24 | 30 A** | Voltage quality module |
| 25 |
20 A** - |
Steering column lock relay (GT500) Not used (base) |
| 26 | 25 A** | Windshield wiper motor |
| 27 | - | Not used |
| 28 | 30 A** | Automatic brake system valve |
| 29 | - | Not used |
| 30 | 30 A** | Starter motor solenoid |
| 31 | - | Not used |
| 32 | 10 A*** | Latch relay coil |
| 33 |
15 A*** 20 A*** |
Run/Start (base) Left-hand high-intensity discharge headlamps (GT500) |
| 34 | 15 A*** | Exhaust valves |
| 35 |
20 A*** - |
Right-hand high-intensity discharge headlamps (GT500) Not used (base) |
| 36 | 10 A*** | Alternator sense |
| 37 | - | Not used |
| 38 | 20 A*** | Vehicle power 1 |
| 39 | - | Not used |
| 40 | 20 A*** | Vehicle power 2 |
| 41 | 15 A*** | Fuel injectors |
| 42 | 15 A*** | Vehicle power 3 |
| 43 | - | Not used |
| 44 |
15 A*** 30 A*** |
Vehicle power 4 (base) Vehicle power 4 (GT500) |
| 45 | - | Not used |
| 46 |
20 A** - |
Differential pump (Mach 1, GT500) Not used (base) |
| 47 | - | Not used |
| 48 |
30 A** - |
Fuel pump #2 (GT500) Not used (base) |
| 49 | 30 A** | Fuel pump |
| 50 | - | Steering column lock relay |
| 51 | - | Not used |
| 52 | - | Horn relay |
| 53 | 20 A** | Cigar lighter |
| 54 | 20 A** | Auxiliary power point |
| 55 |
25 A** - |
Electronic fan 2 (base) Not used (GT500) |
| 56 | - | Not used |
| 57 | - | Air conditioning clutch relay |
| 58 | - | Not used |
| 59 | - | Exhaust valves relay |
| 60 | 5 A*** | Powertrain control module |
| 61 | - | Not used |
| 62 | 5 A*** | Anti-lock brakes run-start switch |
| 63 | - | Not used |
| 64 | 5 A*** | Electronic power assist steering |
| 65 | - | Not used |
| 66 | 5 A*** | Blind spot information system, Rear view camera, Rear window defroster relay coils, Vehicle dynamics module |
| 67 | - | Not used |
| 68 |
10 A*** 10 A*** |
Headlamp leveling switch (base) Signature lighting (GT500) |
| 69 | - | Cigar lighter relay, Auxiliary power point relay |
| 74 |
5 A*** - |
Mass air flow sensor (base) Not used (GT500) |
| 75 |
5 A*** - |
Rain sensor module (base) Not used (GT500) |
| 76 | - | Rear window defroster relay |
| 77 |
- - |
Electronic cooling fan 2 relay (base) Not used (GT500) |
| 78 |
- - |
Run/Start relay (base) Not used (GT500) |
| 79 |
- - |
Charge air cooler pump relay (GT500) Not used (base) |
| 80 | - | Windshield wiper relay |
| 81 | - | Starter motor solenoid relay |
| 82 | - | Powertrain control module relay |
| 83 |
- - |
Cooling fan relay (GT500) Not used (base) |
| 87 | 10 A*** | Heated exterior mirrors |
| 88 | - | Not used |
| 89 |
- - |
Electronic fan 1 relay (base) Not used (GT500) |
| 90 |
- - |
Differential pump relay (Mach 1, GT500) Not used (base) |
| 91 |
- - |
Electronic fan 3 relay (base) Not used (GT500) |
| 92 | - | Blower motor relay |
| 93 |
- - |
Fuel pump #2 relay (GT500) Not used (base) |
| 94 | - | Fuel pump relay |
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*J-case fuses **M-case fuses ***Micro fuses |
