Ford F-150 2021–2023 — technical service bulletin
Bulletin ITRM-26.B04 F-150 · NHTSA communication 11031913 · issued Apr 29, 2026
Technical service bulletin
communication type
Electrical System
component
2021–2023
model years
3
vehicle entries
Official summary
26C10 Recall remedy -Addresses instances where the trailer lights and trailer brakes may not function
Vehicles covered
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.