Service bulletins for the 2026 Ford F-550
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
52 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Brakes are shown. Show all
| SSM 55239 | 2026-10-13. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM; SERVICE BRAKES. 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 |
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| SSM 54722 | 2026-04-10. Service bulletin. SERVICE BRAKES; UNKNOWN OR OTHER; ELECTRICAL SYSTEM. Some 2023-2026 F-Super Duty vehicles equipped with a trailer brake control module 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 has been updated to improve diagnostics for this condition. |
| SSM 54448 | 2026-01-06. Service bulletin. SERVICE BRAKES. Some 2017-2026 F-Super Duty vehicles may exhibit a pull/drift condition during braking. This may be due to the brake pads needing to be broken in. Repeated, heavy brake applications may assist to resolve the pull/drift condition. The Workshop Manual, Section 206-00 Symptom Chart for vehicle pulls or drifts during braking has been updated to reflect this information. |
| SSM 54420 | 2025-12-10. Service bulletin. SERVICE BRAKES. Some 2023-2026 F-Super Duty vehicles built on or before 01-Oct-2025 may exhibit a "Hill Start Assist Unavailable" and/or "Parking Brake Limited Function" message at vehicle start-up with diagnostic trouble codes (DTCs) 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". This may be due to the software in the ABS module. To correct the condition, reprogram the ABS module using the latest software level of the Ford Diagnosis and Repair System (FDRS) scan tool. For claiming, use causal part 2C219 and labor operations 2219D and 2219D44. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.