Owner’s manual specs
2021 Ford F-550 Specs: Maintenance Schedule & Fuse Box
Figures for the 2021 Ford F-550, copied from Ford’s own owner’s manual. Every one links to the manual page it came from.
Maintenance schedule
Normal service schedule
Use this for ordinary driving.
| Service | When |
|---|---|
| Change the automatic transmission fluid and filter on 6-speed transmission. Consult dealer for requirements. | Every 150,000 mi(240,000 km) |
| Change the automatic transmission fluid and filter. Consult dealer for requirements. | Every 150,000 mi(240,000 km) |
| Change the engine oil and filter. | At Every Oil Change Interval as Indicated by the Information Display |
| Inspect the air filter restriction gauge. Replace the air filter if necessary. | At Every Oil Change Interval as Indicated by the Information Display |
| Replace the engine air filter. | Every 30,000 mi(48,000 km) |
Severe service schedule
Use this if you tow, idle a lot, drive short trips in the cold, or run in dust.
| Service | When |
|---|---|
| Change engine oil and filter. Applies to: Off-road operation | Every 5,000 mi(8,000 km) |
| Change engine oil and filter. Applies to: Extensive Idling or Low-speed Driving for Long Distances, as in Heavy Commercial Use (Such as Delivery, Taxi, Patrol Car or Livery) | Every 5,000 mi(8,000 km) |
| Change engine oil and filter. Applies to: Operating in Dusty or Sandy Conditions (Such as Unpaved or Dusty Roads) | Every 5,000 mi(8,000 km) |
| Change engine oil and filter. Applies to: Operating in Dusty or Sandy Conditions - Such as Unpaved or Dusty Roads | Every 5,000 mi(8,000 km) |
| Change engine oil and filter. Applies to: Towing a Trailer or Using a Car-top Carrier | Every 5,000 mi(8,000 km) |
| Change the engine oil and filter as indicated by the information display, and perform the services listed in the scheduled maintenance chart. Applies to: Towing a Trailer or Using a Car-top Carrier | As required |
| Change the engine oil and filter. Applies to: Off-road Operation | Every 7,000 mi(12,000 km) |
| Change the engine oil and filter. Applies to: Operating in Dusty or Sandy Conditions (Such as Unpaved or Dusty Roads) | Every 7,500 mi(12,000 km) |
| Change the engine oil and filter. Applies to: Off-road operation | Every 5,000 mi(8,000 km) |
| Change the engine oil and filter. Applies to: Extensive Idling or Low-speed Driving for Long Distances, as in Heavy Commercial Use - Such as Delivery, Taxi, Patrol Car or Livery | Every 5,000 mi(8,000 km) |
| Change the engine oil and filter. Applies to: Towing a Trailer or Using a Car-top Carrier | Every 5,000 mi(8,000 km) |
| Inspect the air filter restriction gauge. Replace the air filter if necessary. Applies to: Off-road Operation | Every 7,000 mi(12,000 km) |
| Inspect the air filter restriction gauge. Replace the air filter if necessary. Applies to: Operating in Dusty or Sandy Conditions (Such as Unpaved or Dusty Roads) | Every 7,500 mi(12,000 km) |
| Inspect the air filter restriction gauge. Replace the filter if necessary. Applies to: Off-road Operation | Every 7,000 mi(12,000 km) |
| Inspect the air filter restriction gauge. Replace the filter if necessary. Applies to: Operating in Dusty or Sandy Conditions (Such as Unpaved or Dusty Roads) | Every 7,500 mi(12,000 km) |
| Replace cabin air filter. Applies to: Off-road operation | Every 5,000 mi(8,000 km) |
| Replace cabin air filter. Applies to: Extensive Idling or Low-speed Driving for Long Distances, as in Heavy Commercial Use (Such as Delivery, Taxi, Patrol Car or Livery) | Inspect frequently, service as required |
| Replace cabin air filter. Applies to: Operating in Dusty or Sandy Conditions - Such as Unpaved or Dusty Roads | Inspect frequently, service as required |
| Replace engine air filter. Applies to: Extensive Idling or Low-speed Driving for Long Distances, as in Heavy Commercial Use (Such as Delivery, Taxi, Patrol Car or Livery) | Inspect frequently, service as required |
| Replace engine air filter. Applies to: Operating in Dusty or Sandy Conditions - Such as Unpaved or Dusty Roads | Inspect frequently, service as required |
| Replace the air inlet foam filter. Applies to: Operating in Dusty or Sandy Conditions (Such as Unpaved or Dusty Roads) | Every 30,000 mi(48,000 km) |
| Replace the air inlet foam filter. Applies to: Off-road Operation | Every 30,000 mi |
| Replace the cabin air filter. Applies to: Off-road operation | Every 5,000 mi(8,000 km) |
| Replace the cabin air filter. Applies to: Extensive Idling or Low-speed Driving for Long Distances, as in Heavy Commercial Use - Such as Delivery, Taxi, Patrol Car or Livery | Inspect frequently, service as required |
| Replace the engine air filter. Applies to: Extensive Idling or Low-speed Driving for Long Distances, as in Heavy Commercial Use - Such as Delivery, Taxi, Patrol Car or Livery | Inspect frequently, service as required |
| Replace the engine-mounted and frame-mounted fuel filters. Applies to: Towing a Trailer or Using a Car-top Carrier | Every 15,000 mi(24,000 km) |
| Replace the engine-mounted and frame-mounted fuel filters. Applies to: Operating in Dusty or Sandy Conditions (Such as Unpaved or Dusty Roads) | Every 15,000 mi(24,000 km) |
| Replace the engine-mounted and frame-mounted fuel filters. Applies to: Using Biodiesel, up to and Including 20% Biodiesel (B20) | Every 15,000 mi(24,000 km) |
| Replace the engine-mounted and frame-mounted fuel filters. Applies to: Frequent or Extended Idling (Over 10 Minutes Per Hour of Normal Driving) or Frequent Low-speed Operation if your Vehicle is Used for Stationary Operation | Every 15,000 mi(24,000 km) |
| Replace the engine-mounted and frame-mounted fuel filters. Applies to: Frequent or Extended Idling - Over 10 Minutes Per Hour of Normal Driving or Frequent Low-speed Operation if you use your Vehicle for Stationary Operation | Every 15,000 mi(24,000 km) |
Fuse box locations & fuse chart
Passenger Compartment Fuse Panel
Where to find it
Passenger Compartment Fuse Panel The fuse panel is in the right-hand side of the passenger footwell behind a trim panel.
To remove the trim panel, pull it toward you and swing it away from the side.
Not on this page
- Fluids & capacities: The manual gives different answers by configuration, so we've left them out.
- Oil life & reset procedures: The manual gives different answers by configuration, so we've left them out.