Ford Expedition 1997–1999 — technical service bulletin
Bulletin 98254 · NHTSA communication 603643 · issued Dec 21, 1998
Technical service bulletin
communication type
Suspension
component
1997–1999
model years
5
vehicle entries
Official summary
Some vehicles equipped with air suspension may exhibit an intermittent check suspension lamp on and diagnostic trouble code (dtc) c1770 and/or c1845 illuminated. *yc
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.