Ford Expedition 1999–2000 — technical service bulletin
Bulletin 13737 · NHTSA communication 612732 · issued Jan 1, 2000
Technical service bulletin
communication type
Unknown / Other
component
1999–2000
model years
10
vehicle entries
Official summary
All vehicles may exhibit an inoperative or inaccurate speedometer, 4x4 light inoperative and/or dtc p1635 after a pcm has been replaced. *mjs
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.