SSM 2025–2026 Super Duty Radio Volume — 54641

[Ford Tremor Forum]

Special Service Message · SSM 54641

This is a Special Service Message, not a recall. SSMs are informational notes Ford sends dealers about a known condition or a change in procedure. They are not repair orders, and they don't by themselves change what is covered.

Published: Mar 10, 2026
Applies to: F-250, F-350 (2025–2026 model years)

Also listed in the source (outside this forum's coverage): F-450 SD 2025–2026, F-550 SD 2025–2026

Summary (official text)​

Some 2025-2026 F-Super Duty vehicles properly upfitted with a snowplow kit following the guidelines in the Super Duty Body Builders Layout Book (located on the www.FordPro.com website > Resources > Body Builder Advisory Service (BBAS) > Publications) may experience a radio volume that temporarily turns off or decreases when the engine RPMs are raised above idle and the snowplow is operated. Ford is aware of this condition and is investigating a service solution. Component replacement is not expected to resolve this condition. Monitor Professional Technician System (PTS) for updates.

Sources​

• SSM 54641 (PDF, NHTSA document 11029935) — Mar 10, 2026

Details from NHTSA as of Oct 7, 2026. If NHTSA or Ford revises this notice, this post is updated and significant changes are noted in a reply. The linked documents are the authority, and a dealer can confirm whether it applies to your VIN.

Have you experienced this issue with your truck? Let us know your model year and engine, plus any diagnosis or repair details.