Ford F-150 2015–2019 — technical service bulletin
Bulletin 21M04 · NHTSA communication 10198638 · issued Jun 30, 2021
Technical service bulletin
communication type
Latches/locks/linkages
component
2015–2019
model years
17
vehicle entries
Official summary
In some of the affected vehicles, moisture and water entering a power door lock actuator housing can cause the actuator motor to momentarily freeze in cold temperatures and may also cause actuator motor corrosion over time. Frozen water within a power door lock actuator housing or corrosion of the power door lock actuator motor could result in an inoperative power door lock function on the affected door.
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.