Ford Expedition 2018–2020 — technical service bulletin
Bulletin TSB 20-2253 · NHTSA communication 10179116 · issued Aug 12, 2020
Technical service bulletin
communication type
Equipment Adaptive/mobility
component
2018–2020
model years
6
vehicle entries
Official summary
Some 2018-2020 Expedition/Navigator two-wheel drive (2WD) vehicles may exhibit a clunk noise from the driveshaft area when shifting from REVERSE to DRIVE or DRIVE to REVERSE and/or during coast down. This condition may be caused by a slip/stick condition at the transmission output flange/anti-ting ring interface. To correct the condition, follow the Service Procedure to apply a light coating of grease to the anti-ting washer and output shaft splines.
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.