Ford bulletin 25H05 S1
Ford filed this with NHTSA as a manufacturer communication dated Apr 29, 2026, received Apr 30, 2026, about the electrical system. It names 21 model years (2016–2020). A manufacturer communication is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationHarvest Program 25H05 – Supplement #1 Certain 2011-2021 Model Year Vehicles Software Verification Harvest Program
Document filed under this number
| Document | Kind | Dated | NHTSA id |
|---|---|---|---|
| 25H05 S1 | Other | Apr 29, 2026 | 11031792 |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5; the full text comes from the manufacturer or a dealer. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. Quote it at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themAlso filed against model years this site has no page for: 2018 Ford F-550 SD; 2019 Ford F-550 SD.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Common questions
Source: NHTSA, 49 CFR 579.5Is Ford 25H05 S1 a recall?
No. A manufacturer communication is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the 25H05 S1 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way.
Which vehicles does 25H05 S1 cover?
The manufacturer filed it against 21 model years: 2017 Ford Escape, 2020 Ford F-150, 2019 Ford F-150, 2018 Ford F-150, 2017 Ford F-150, 2019 Ford F-250 Super Duty and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.