Some 2023-2025 F-Super Duty vehicles may exhibit a "Hill Start Assist Unavailable" and/or "Parking Brake...

Bulletin number

SSM 53892

Component

Service brakes

Summary

Some 2023-2025 F-Super Duty vehicles may exhibit a "Hill Start Assist Unavailable" and/or "Parking Brake Limited Function" message at vehicle start-up with diagnostic trouble codes (DTC) U0151, U023A, U0159, and/or U0146 stored in the anti-lock brake system (ABS) module. These DTCs and/or U0415 may also be present in various other modules related to "invalid data received from the ABS control module". Replacement or reprogramming of the ABS module will not resolve this condition. There is no effect to the parking brake or other vehicle functions. This does not affect vehicle durability and no additional diagnosis or service is required for this condition at this time. Inform customers that they can continue to drive the vehicle and engineering is currently working on a solution for this condition that is expected in Q3 2025. Monitor Professional Technician System (PTS) for additional information and schedule service appointments for customers once the repair becomes available.

Owners of these vehicles have filed 29 complaints in the brakes category.