Ford E-Transit 2021–2025 — technical service bulletin
Bulletin SSM 54388 · NHTSA communication 11025811 · issued Nov 18, 2025
Technical service bulletin
communication type
Fuel/propulsion System
component
2021–2025
model years
7
vehicle entries
Official summary
Some 2021-2023 Mustang Mach-E vehicles equipped with nickel, cobalt and manganese (NCM) standard/extended range battery with minor feature codes HTHAD/HTHAE and 2022-2025 e-Transit vehicles equipped NCM standard range battery with minor feature codes HUKAL/HUKAA may require a high voltage battery module replacement. Technicians can now replace the affected battery module for high voltage batteries with a state of health (SOH) of 70% or higher. It is no longer necessary to replace the complete high voltage battery assembly for vehicles with 70% SOH or higher. Additionally, the battery health ch
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.