Ford F-250 SD 2020 — technical service bulletin
Bulletin SSM 48779 · NHTSA communication 10174426 · issued Apr 27, 2020
Technical service bulletin
communication type
Electrical System
component
2020
model years
4
vehicle entries
Official summary
2020 F-Super Duty vehicles equipped from the factory with an exterior backup alarm will also experience an interior chime when the vehicle is placed into the reverse position. This chime may come through the vehicles audio system or through the instrument cluster. This interior chime is characteristic to vehicles that are equipped with a factory exterior backup alarm and no repairs are recommended.
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.