Power Distribution Box
WARNING: Always disconnect the battery before servicing high current fuses. WARNING: To reduce risk of electrical shock, always replace the cover to the power distribution box before reconnecting the battery or refilling fluid reservoirs. |
The power distribution box is in the engine compartment. It has high-current fuses that protect your vehicle’s main electrical systems from overloads.If you disconnect and reconnect the battery, you need to reset some features.
Fuse or Relay Number | Fuse Rating | Protected Component |
---|---|---|
1 | 60A1 | Electronic fan 1 (GT500). |
— | Not used (base). | |
2 | — | Not used. |
3 | 30A1 | Electronic fan 1 (base). |
— | Not used (GT500). | |
4 | 40A1 | Electronic fan 3 (base). |
— | Not used (GT500). | |
5 | 50A1 | Automatic brake system pump. |
6 | 50A1 | Body control module. |
7 | 60A1 | Body control module. |
8 | 50A1 | Body control module. |
9 | 40A1 | Rear window defroster. |
10 | 40A1 | Blower motor. |
11 | 30A2 | Left-hand front window. |
12 | 30A2 | Driver seat. |
13 | 30A2 | Passenger seat. |
14 | 30A2 | Climate controlled seat module. |
15 | 20A2 | Convertible top slave motor (base). |
— | Not used (GT500). | |
16 | 15A2 | Charge air cooler pump (GT500). |
— | Not used (base). | |
17 | 20A2 | Convertible top master motor (base). |
— | Not used (GT500). | |
18 | — | Not used. |
19 | 20A3 | Steering column lock relay (base). |
10A3 | Transmission control unit (GT500). | |
20 | 10A3 | Brake on-off switch. |
21 | 20A3 | Horn. |
22 | 10A3 | Powertrain control module relay. |
23 | 10A3 | Air conditioning clutch. |
24 | 30A2 | Voltage quality module. |
25 | 20A2 | Steering column lock relay (GT500). |
— | Not used (base). | |
26 | 25A2 | Windshield wiper motor. |
27 | — | Not used. |
28 | 30A2 | Automatic brake system valve. |
29 | — | Not used. |
30 | 30A2 | Starter motor solenoid. |
31 | — | Not used. |
32 | 10A3 | Latch relay coil. |
33 | 15A3 | Run/start (base). |
20A3 | Left-hand high-intensity discharge headlamps (GT500). | |
34 | 15A3 | Exhaust valves. |
35 | 20A3 | Right-hand high-intensity discharge headlamps (GT500). |
— | Not used (base). | |
36 | 10A3 | Alternator sense. |
37 | — | Not used. |
38 | 20A3 | Vehicle power 1. |
39 | — | Not used. |
40 | 20A3 | Vehicle power 2. |
41 | 15A3 | Fuel injectors. |
42 | 15A3 | Vehicle power 3. |
43 | — | Not used. |
44 | 15A3 | Vehicle power 4 (base). |
30A3 | Vehicle power 4 (GT500). | |
45 | — | Not used. |
46 | 20A2 | Differential pump (Mach 1, GT500). |
— | Not used (base). | |
47 | — | Not used. |
48 | 30A2 | Fuel pump #2 (GT500). |
— | Not used (base). | |
49 | 30A2 | Fuel pump. |
50 | — | Steering column lock relay. |
51 | — | Not used. |
52 | — | Horn relay. |
53 | 20A2 | Cigar lighter. |
54 | 20A2 | Auxiliary power point. |
55 | 25A2 | Electronic fan 2 (base). |
— | Not used (GT500). | |
56 | — | Not used. |
57 | — | Air conditioning clutch relay. |
58 | — | Not used. |
59 | — | Exhaust valves relay. |
60 | 5A3 | Powertrain control module. |
61 | — | Not used. |
62 | 5A3 | Anti-lock brakes run/start switch. |
63 | — | Not used. |
64 | 5A3 | Electronic power assist steering. |
65 | — | Not used. |
66 | 5A3 | Blind spot information system. Rear view camera. Rear window defroster relay coils. Vehicle dynamics module. |
67 | — | Not used. |
68 | 10A3 | Headlamp leveling switch (base). |
10A3 | Signature lighting (GT500). | |
69 | — | Cigar lighter relay. Auxiliary power point relay. |
74 | 5A3 | Mass air flow sensor (base). |
— | Not used (GT500). | |
75 | 5A3 | 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 | 10A3 | 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. |
1J-case fuses.2M-case fuses.3Micro fuses.
Note: Spare fuse amperage may vary.
Passenger Compartment Fuse Panel
The fuse panel is in the right-hand side of the passenger footwell behind a trim panel and plastic key code card.To remove the trim panel, lift it from the rear retaining hooks, while pulling it toward you and swinging it away from the side. To reinstall it, line up the tabs with the grooves on the panel, drop the panel back into place, and then push it shut.To reach the fuse panel, first remove the key code card. After replacing a fuse, return the key code card to the original position. To reinstall the trim panel, lineup the tabs with the grooves on the panel, drop the panel back into place, and then push it shut to reinstall the trim panel.
Fuse or Relay Number | Fuse Rating | Protected Component |
---|---|---|
1 | — | Not used. |
2 | 10A | Power windows. Electrochromic mirror. Power door locks. |
3 | 7.5A | Power mirrors (base). Memory seats (base). |
— | Not used (GT500). | |
4 | 20A | Not used (spare). |
5 | — | Not used. |
6 | 10A | Not used (spare). |
7 | 10A | Not used (spare). |
8 | 5A | Telematic control unit – modem. |
9 | 5A | Not used. |
10 | — | Not used. |
11 | — | Not used. |
12 | 7.5A | Electronic control panel. Gateway module. Gear shift module (GT500). |
13 | 7.5A | Steering column control module. Instrument cluster. |
14 | 15A | Not used. |
15 | 15A | SYNC. Gauges. |
16 | — | Not used. |
17 | 7.5A | Headlamp leveling switch (base). |
— | Not used (GT500). | |
18 | 7.5A | Not used. |
19 | 5A | Not used. |
20 | 5A | Intrusion sensor module. |
21 | 5A | In-vehicle temperature and humidity sensor. |
22 | 5A | Auxiliary body module. |
23 | 30A | Amplifier. |
24 | 30A | Vehicle dynamics module. |
25 | 20A | Ambient lighting module (base). Auxiliary body module. |
26 | 30A | Right-hand front-window motor (power distribution module). Passenger door control unit. |
27 | 30A | Left-hand rear-window power (base). |
— | Not used (GT500). | |
28 | 30A | Right-hand rear-window power (base). |
— | Not used (GT500). | |
29 | 15A | Gateway module (base). Not used (spare) (GT500). |
30 | 5A | Not used (spare) |
31 | 10A | Remote keyless entry. |
32 | 20A | Audio unit. |
33 | — | Not used. |
34 | 30A | Run/start bus. |
35 | 5A | Power distribution box run/start relay (base). |
— | Not used (GT500). | |
36 | 15A | Front camera (base). |
— | Not used (GT500). | |
37 | 20A | Heated steering wheel module (base). |
— | Not used (GT500). |
Note: Spare fuse amperage may vary.
2021 Ford Mustang Owners Manual
Changing a Fuse
Fuses
WARNING: Always replace a fuse with one that has the specified amperage rating. Using a fuse with a higher amperage rating can cause severe wire damage and could start a fire. |
If electrical components in the vehicle are not working, a fuse may have blown. Blown fuses are identified by a broken wire within the fuse. Check the appropriate fuses before replacing any electrical components.Fuse Types
Callout | Fuse Type |
---|---|
A | Micro 2 |
B | Micro 3 |
C | Maxi |
D | Mini |
E | M Case |
F | J Case |
G | J Case Low Profile |