Ford F-250 1999 — technical service bulletin
Bulletin 4637 · NHTSA communication 615175 · issued Aug 1, 1998
Technical service bulletin
communication type
Service Brakes, Hydraulic
component
1999
model years
4
vehicle entries
Official summary
Anti-skid brake system (abs) light on and 4wabs codes set. *tt
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.