January 25, 2023 Service bulletin

Reverse Brake Assistance Not Available message and diagnostic trouble code (DTC) B1578:78 stored in the...

Ford technical service bulletin TSB 23-2021 for 2021-2022 Ford Mustang.

Bulletin number: TSB 23-2021
Component: Back over prevention: sensing system: camera
Summary: Some 2021-2022 Mustang Mach-E vehicles equipped with the rear view camera system only may exhibit the Reverse Brake Assistance Not Available message and diagnostic trouble code (DTC) B1578:78 stored in the image processing module A (IPMA) that cannot be cleared. This may be due to the IPMA software. To correct this condition, follow the Service Procedure to reprogram the IPMA to the latest level.

Owners of these vehicles have filed 11 complaints in the driver assistance category.

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