Ford F-250 SD 2017–2020 — technical service bulletin
Bulletin SSM 49010 · NHTSA communication 10177712 · issued Jul 21, 2020
Technical service bulletin
communication type
Service Brakes, Hydraulic
component
2017–2020
model years
16
vehicle entries
Official summary
Some 2017-2020 F-Super Duty vehicles may exhibit concerns related to brake drag. Utilize Workshop Manual (WSM) diagnostics in section 206-00 to verify the correct installation of the stoplamp switch. Improper adjustment of the stoplamp switch can cause the brake pedal assembly to lightly apply the brakes resulting in dragging condition.
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.