Ford Mustang 2023–2024 — technical service bulletin
Bulletin SSM 52465 · NHTSA communication 10254131 · issued Apr 22, 2024
Technical service bulletin
communication type
Unknown OR Other
component
2023–2024
model years
5
vehicle entries
Official summary
Some 2023-2024 Mustang Mach-E/Corsair and 2024 Mustang vehicles may exhibit an audio control module (ACM) programming failure with a message displayed in the Ford Diagnosis and Repair System (FDRS) scan tool indicating Procedure Unsuccessful-Flash Software Failed To Flash. This may be due to the ACM programming routine. To correct this condition, download and click the refresh icon located next to the run icon to update the ACM - Programmable Module Installation (PMI) app. For claiming, use causal part 18C869 and applicable labor operations in Section 11 of the Service Labor Time Standards (SL
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.