Ford F-250 SD 2020 — technical service bulletin
Bulletin SSM 48777 · NHTSA communication 10174424 · issued Apr 27, 2020
Technical service bulletin
communication type
Exterior Lighting
component
2020
model years
4
vehicle entries
Official summary
Some 2020 F-Super Duty vehicles may exhibit a condition where the turn signals flash fast after removal of the factory pick up box and tail lamps for flatbed installation. To prevent the turn signals from flashing fast, the BCM will need to be configured using the FDRS scan tool. Start a vehicle session in FDRS using the vehicles VIN and go to the toolbox tab. The BCM will have an application labeled Turn Signal Lamp Configuration. Download and run this application to configure the turn signals.
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.