Ford over-the-air update TCU-25.2.5.5
What it saysQuality improvements include: -Addresses key off load battery usage caused by Accessory Protocol Interface Module (APIM) remaining awake. NHTSA’s full summary ↓
Ford filed this with NHTSA as an over-the-air update dated Jul 17, 2025, received Aug 6, 2025, about the fuel/propulsion system — 2 documents under this number: TCU-25.2.5.5 E-Transit, TCU-25.2.5.5 Transit. It names 2 model years (2023). An over-the-air update is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationQuality improvements include: -Addresses key off load battery usage caused by Accessory Protocol Interface Module (APIM) remaining awake. Telematics Control Unit is updated to match the APIM software.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| TCU-25.2.5.5 E-Transit | Over-the-air update | Jul 17, 2025 | 11021527 | PDF, 29 KB |
| TCU-25.2.5.5 Transit | Over-the-air update | Jul 17, 2025 | 11021526 | PDF, 29 KB |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. 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. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 2 model years this bulletin names have filed 61 complaints with NHTSA since 2015. 14 of them name Electrical System — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
The alternator and regulator failed. Parts are available for inspection. Safety was at risk as vehicle could stop or loose nighttime electrical lighting at highway speeds without any prior warning due to sudden loss of electric power. Selling dealer has inspected and confirmed failure of above parts.
2023 Ford Transit · Electrical System · filed with NHTSA May 30, 2024 · ODI 11591496
A very strong gas smell was detected on the vehicle cabin. It lingers for a long time when it seems to be going away, it comes back strong again. This began July 2nd 2024.
2023 Ford Transit · Fuel/Propulsion System · filed with NHTSA Jul 6, 2024 · ODI 11599583
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the fuel/propulsion system
Source: same model, same component group5 other manufacturer communications filed against these Ford models under the same component group (fuel/propulsion system), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| SSM 54963 | Service bulletin | Jun 23, 2026 | Some 2025-2026 Maverick and 2026 Transit/Bronco Sport vehicles equipped with an 8-inch instrument panel cluster (IPC) display may exhibit a… |
| 23B64 | Other | Apr 8, 2026 | Customer Satisfaction Program 23B64 Certain 2020-2024 Model Year Multiple Vehicle Lines Equipped with High Voltage Batteries Battery Energ… |
| SSM 54388 | Service bulletin | Nov 18, 2025 | Some 2021-2023 Mustang Mach-E vehicles equipped with nickel, cobalt and manganese (NCM) standard/extended range battery with minor feature c… |
| SSM 54317 | Service bulletin | Oct 21, 2025 | Some 2021-2025 F-150, 2022-2025 Expedition/Navigator, 2023-2025 F-Super Duty, 2024-2025 Ranger and 2026 Transit vehicles may exhibit a disch… |
| 23M01 | Service bulletin | Jan 9, 2024 | Certain 2015-2019 Ford Transit 3.2L Diesel Replace Diesel Particulate Filter (DPF) |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Ford, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Ford TCU-25.2.5.5 a recall?
No. A over-the-air update 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 TCU-25.2.5.5 repair free?
A over-the-air update is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does TCU-25.2.5.5 cover?
The manufacturer filed it against 2 model years: 2023 Ford E-Transit, 2023 Ford Transit. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.