Ford Mustang 2020–2023 — technical service bulletin
Bulletin SSM 52430 · NHTSA communication 10253559 · issued Apr 9, 2024
Technical service bulletin
communication type
Unknown OR Other
component
2020–2023
model years
4
vehicle entries
Official summary
Some 2020-2023 Mustang vehicles may exhibit a configuration failure when trying to program a BCM for field service action (FSA) 23C35. This may be due to the Integrated Diagnostic System (IDS) software level. To correct this condition, make sure the IDS software is at R130.04 or newer when configuring the BCM. If the state of charge (SOC) is less than 50%, charge the battery by attaching the battery charger's negative clamp to the engine or chassis ground and not the negative battery terminal. Refer to Workshop Manual (WSM), Section 414-01.
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.