Ford F-550 (2017 – 2018) – fuse box diagram
Year of production: 2017, 2018
Passenger Compartment Fuse Box
| Number | Ampere rating [A] | Description |
| 1 | — | — |
| 2 | 7,5 | Memory seat switch (lumbar power) |
| 3 | 20 | Driver door unlock relay |
| 4 | 5 | Aftermarket electronic brake controller, Trailer brake controller Brake On/Off, Customer access circuits |
| 5 | — | — |
| 6 | — | — |
| 7 | — | — |
| 8 | — | — |
| 9 | 10 | Brake On/Off / Pressure Switch |
| 10 | — | — |
| 11 | 5 | Combined sense security module |
| 12 | 7,5 | Front climate control module |
| 13 | 7,5 | Instrument cluster, Smart data link, Steering column control module |
| 14 | 10 | Extended power restraints module |
| 15 | 10 | Smart datalink connector power |
| 16 | 10 | Tailgate release solenoid |
| 17 | 5 | Head-up display |
| 18 | 5 | Push button ignition switch, Ignition switch, Key inhibit |
| 19 | 7,5 | Transmission control switch (tow/haul), Select Shift switch |
| 20 | 7,5 | Active front steering module |
| 21 | 5 | Head-up display, Humidity sensor |
| 22 | 5 | Upfitter switch, Run/Start, PTO relays |
| 23 | 10 | Accessory delay, Power windows, Moonroof, Power folding mirrors relay, Inverter, Window/moon roof switch illumination |
| 24 | 20 | Central locking system relay |
| 25 | 30 | Left-hand front smart window motor, Door zone module |
| 26 | 30 | Right-hand front smart window motor, Door zone module |
| 27 | 30 | Moon roof |
| 28 | 20 | Sony amplifier -10 channel |
| 29 | — | — |
| 30 | — | — |
| 31 | 15 | Adjustable pedals switch |
| 32 | 10 | SYNC, GPS module, Display, Radio frequency receiver |
| 33 | 20 | Radio |
| 34 | 30 | Run-start relay |
| 35 | 5 | Extended power restraints module |
| 36 | 15 | Lane keeping system, Automatic high beam control, Auto-dimming mirrors, Rear heated seats, Camera module |
| 37 | 20 | Heated steering wheel |
| 38 | 30 | Circuit breaker: Rear power window switch |
Engine Compartment Fuse Box
| Number | Ampere rating [A] | Description |
| 1 | 20 | Powertrain control module |
| 2 | 20 | Emissions (MIL) |
| 3 | 20 | Cooling fan, A/C compressor, Engine brake |
| 4 | 20 | Noise suppression cap, Mass air flow sensor, Emissions, Glow plugs, Urea |
| 5 | 15 | Compressed natural gas fuel control module |
| 6 | — | — |
| 7 | — | — |
| 8 | — | — |
| 9 | — | — |
| 10 | 10 | Heated exterior mirrors |
| 12 | 40 | Heated rear window |
| 13 | — | — |
| 15 | 20 | Horn |
| 16 | 10 | A/C clutch relay power |
| 22 | 20 | Auxiliary power point #5 (rear console), Run-start |
| 23 | — | — |
| 26 | — | — |
| 27 | 30 | Trailer tow battery charge relay |
| 30 | 10 | 4×4 module |
| 31 | 5 | Adaptive cruise control, Run-start |
| 32 | 5 | Anti-lock brake system module, Run-start |
| 33 | 10 | Powertrain control module (ISPR), Run-start, Engine control module, Transmission control module |
| 34 | 10 | Blind spot information system, Run-start, Front camera, Rear camera |
| 35 | — | — |
| 41 | 25 | Glow plugs |
| 42 | 40 | Trailer tow lighting module |
| 43 | 40 | Front blower motor |
| 44 | 50 | Voltage quality module, Body control module |
| 45 | 60 | Active front steering |
| 46 | 50 | Supplemental air heater bank #2 |
| 47 | 50 | Cooling fan, Supplemental air heater bank #3 |
| 48 | 50 | Body control module RP1 bus |
| 49 | 60 | Inverter |
| 50 | 50 | Body control module RP2 bus |
| 51 | 60 | Body control module B+ feed |
| 52 | 60 | Anti-lock brake system pump |
| 53 | 50 | Supplemental air heater bank #1 |
| 54 | 30 | Trailer brake control module |
| 55 | 30 | Climate controlled seat module |
| 56 | 40 | Auxiliary lighting module |
| 57 | 30 | Power running boards |
| 58 | 30 | Compressed natural gas fuel control module relay |
| 59 | 30 | Anti-lock brake system valve |
| 60 | — | — |
| 61 | 30 | Driver power seat |
| 62 | 20 | Auxiliary power point #1 (instrument panel) |
| 63 | 30 | Starter motor |
| 64 | 20 | Auxiliary power point #2 |
| 65 | 30 | Trailer tow lighting module |
| 66 | 20 | Auxiliary power point #3 (center console) |
| 67 | 30 | Passenger power seat |
| 68 | 20 | Auxiliary power point #4 (rear media bin) |
| 69 | 20 | 4×4 module |
| 70 | — | — |
| 71 | — | — |
| 72 | 30 | Trailer tow left hand/right hand stop/turn |
| 73 | — | — |
| 74 | — | — |
| 75 | 30 | Fuel pump |
| 76 | — | — |
| 77 | 30 | Wiper motor |
| 78 | — | — |
| 79 | 30 | Power sliding rear window |
| 80 | 25 | 4×4 module |
| 81 | 10 | 4×4 solenoid |
| 82 | 10 | Power telescoping mirrors |
| 83 | 20 | Rear heated seats |
| 84 | 10 | Trailer tow backup lamps |
| 85 | — | — |
| 86 | — | — |
| 87 | — | — |
| 88 | 10 | Multi contour seats |
| 89 | — | — |
| 90 | 10 | Spot light module |
| 91 | 10 | Upfitter interface module |
| 92 | — | — |
| 93 | — | — |
| 94 | 10 | Transmission control module |
| 95 | 10 | Powertrain control module keep alive power |
| 96 | 5 | Rain sensor |
| 97 | — | — |
| 98 | 10 | Alternator sense |
| 99 | 30 | Trailer tow parking lamps |
| Relay | ||
| 11 | CNG relay | |
| 14 | Powertrain control module relay | |
| 17 | Rear heated window and heated mirrors relay | |
| 18 | — | |
| 19 | — | |
| 20 | Supplemental air heater bank #1 relay | |
| 21 | — | |
| 24 | Cooling fan relay, Supplemental air heater bank #3 relay |
|
| 25 | Glow plug module power relay | |
| 29 | Run-start relay | |
| 36 | Blower motor relay | |
| 37 | Trailer tow battery charge relay | |
| 38 | A/C compressor clutch relay | |
| 39 | Horn relay | |
| 40 | Supplemental air heater bank #2 relay | |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.