Some 2021 Mustang Mach-E/F-150 vehicles may exhibit a Reverse Brake Assist Unavailable message displayed in the instrument panel cluster (IPC) with missing active guide lines in the reverse camera display and/or diagnostic trouble code (DTC) U0415:86 stored in the IPMA. This may be due to a software issue with the anti-lock brake system (ABS) module. To correct the condition, follow the Service Procedure to reprogram the ABS module.
