Some 2023-2026 F-Super Duty vehicles equipped with a trailer brake control module and built on or before...

Bulletin number

SSM 55239

Component

Service brakes

Summary

Some 2023-2026 F-Super Duty vehicles equipped with a trailer brake control module and built on or before 08-May-2026 may exhibit a "Trailer Disconnected" message after cycling the ignition off and back on with a trailer connected. This may be due to the presence of an integrated battery charger on a trailer equipped with electric over hydraulic brakes. If trailer functionality is restored after unplugging and plugging the trailer connector back in while the ignition is on, this condition can be corrected by downloading and performing the "Trailer Brake Configuration" application using the latest software version of the Ford Diagnosis and Repair System (FDRS) scan tool. For claiming, use causal part 19H332 and labor operations 12651D and 12651D4. Workshop Manual (WSM), Section 417-01 Exterior Lighting > Diagnosis and Testing > Trailer Lamps > Pinpoint Test G The Message Center Displays A False Trailer Disconnected Message When A Trailer Is Connected To The Vehicle - Only For Electric Over Hydraulic (EOH) Equipped Trailers When Vehicle Trailer Brake Type Setting Is Set To Electric Over Hydraulic has bee

Owners of these vehicles have filed 32 complaints in the brakes category.