Ford F-150 2021–2024 — technical service bulletin
Bulletin TSB 24-2189 · NHTSA communication 11002685 · issued Jun 26, 2024
Technical service bulletin
communication type
Power Train
component
2021–2024
model years
4
vehicle entries
Official summary
Some 2021-2024 F-150 non-Raptor vehicles equipped with 4WD and ESOF transfer case (minor feature code FMLAS) may exhibit an intermittent grinding/hum/rumble noise from the front wheel area while in 2WD that goes away when the vehicle is put into 4WD. These vehicles will also have no diagnostic trouble codes (DTCs) stored in the transfer case control module (TCCM). To confirm a vehicle is built with a certain minor feature code, review the build information by double-clicking the vehicle identification number (VIN) in the upper left corner in the Professional Technician System (PTS). This may b
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.