Ford Explorer 2020–2021 — technical service bulletin
Bulletin SSM 49519 · NHTSA communication 10187917 · issued Feb 1, 2021
Technical service bulletin
communication type
Power Train
component
2020–2021
model years
2
vehicle entries
Official summary
Some 2020-2021 Explorer vehicles equipped with a 10R60/10R80-MHT automatic transmission and built on or before 29-Oct-2020 may exhibit an illuminated malfunction indicator lamp (MIL) and diagnostic trouble codes (DTCs) U0100, U0155, P166B, P0929, and/or P0919. The vehicle may also exhibit an illuminated powertrain malfunction (wrench) indicator lamp. This may be due to the software in the gear shift module (GSM). To correct the condition, reprogram the GSM using the latest software level of the appropriate Ford diagnostic scan tool. For claiming, use causal part 7P155 and applicable labor oper
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.