Ford Mustang Mach E 2007–2024 — technical service bulletin
Bulletin SSM 54555 · NHTSA communication 11028797 · issued Feb 6, 2026
Technical service bulletin
communication type
Structure
component
2007–2024
model years
20
vehicle entries
Official summary
Some 2020-2022-Corsair, 2021-2023 Nautilus, 2020-2024 Navigator/Aviator, and 2021-2024 Mustang Mach-E vehicles equipped with phone-as-a-key may exhibit various phone-as-a-key concerns with diagnostic trouble codes (DTC) U200D:15, U200E:15, U200F:15, B1589:31/49 through B1598:31/49, B1A56:31/49, B1D55:31/49, and/or B15A5:56 stored in the remote function actuator (RFA) module. If any of these DTCs are detected during diagnostics, clear the DTCs, reprogram the RFA to the latest software level and start a new Ford Diagnosis and Repair System (FDRS) session. Verify that DTCs are no longer present.
Vehicles covered
- 2021 Ford Mustang Mach E
- 2022 Ford Mustang Mach E
- 2023 Ford Mustang Mach E
- 2024 Ford Mustang Mach E
- 2021 Lincoln Aviator
- 2022 Lincoln Aviator
- 2023 Lincoln Aviator
- 2024 Lincoln Aviator
- 2020 Lincoln Corsair
- 2021 Lincoln Corsair
- 2022 Lincoln Corsair
- 2007 Lincoln MKX
- 2021 Lincoln Nautilus
- 2022 Lincoln Nautilus
- 2023 Lincoln Nautilus
- 2020 Lincoln Navigator
- 2021 Lincoln Navigator
- 2022 Lincoln Navigator
- 2023 Lincoln Navigator
- 2024 Lincoln Navigator
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.