Ford over-the-air update GSM-26.2651B
What it saysQuality improvements include: - Updates the motor short failure detection logic to prevent Diagnostic Trouble Codes NHTSA’s full summary ↓
Ford filed this with NHTSA as an over-the-air update dated Jul 13, 2026, received Jul 17, 2026, about the electrical system — 1 document under this number: GSM-26.2651B MachE. It names 4 model years (2021–2024). 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: - Updates the motor short failure detection logic to prevent Diagnostic Trouble Codes
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| GSM-26.2651B MachE | Over-the-air update | Jul 13, 2026 | 11035037 | PDF, 22 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 4 model years this bulletin names have filed 669 complaints with NHTSA since 2015. 322 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.
On the 2021 Ford Mustang Mach-E, the 17 owners who gave an odometer reading for Electrical System reported it at a median of 30,696 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
The contact owns a 2023 Ford Mustang Mach-E. The contact stated while driving approximately 35 MPH, a MIL warning illuminated, with the message “Immediate Loss of Power” displayed. The contact stated that the vehicle shut off and the battery was drained. The contact stated that the vehicle stopped and independently shifted to park(P).
2023 Ford Mustang Mach-E · Electrical System · filed with NHTSA Dec 5, 2023 · ODI 11558645
After charging for the first time at a DC fast charge station to 80%, I resumed my trip and drove about 3 miles to merge onto the expressway, my screen panel said "safely stop now", with a turtle logo and battery icon coming on. my car then came to a complete stop within a few seconds in the middle of the on-ramp leaving me stranded.
2022 Ford Mustang Mach-E · Electrical System · filed with NHTSA Jun 6, 2023 · ODI 11525550
I am reporting a serious safety defect involving the electronic front door latches on my 2024 Ford Mustang Mach E. During a 12V battery discharge, the electric latches can fail, preventing the doors from opening in the outside.
2024 Ford Mustang Mach-E · Electrical System · filed with NHTSA Aug 14, 2025 · ODI 11680603
In depth: 2023 Ford Mustang Mach-E electrical problems → · 2022 Ford Mustang Mach-E electrical problems → · 2021 Ford Mustang Mach-E electrical problems →
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 electrical system
Source: same model, same component group103 other manufacturer communications filed against the Ford Mustang Mach-E under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Ford list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| TSB 26-2442 | Service bulletin | Oct 14, 2026 | This bulletin supersedes 26-2297. Reason for update: Add 2022-2025 Transit vehicles. Some of the vehicles listed in the model statement abov… |
| 26B07 | Other | Sep 24, 2026 | Recommended Repair Prior to Sale Customer Satisfaction Program 26B07 Certain 2021-2025 Model Year F-150 Lightning and Mustang Mach-E Vehicle… |
| TSB 26-2421 | Service bulletin | Sep 18, 2026 | This bulletin updates 25-2622. Reason for update: * Update the Service Procedure to: - Remove Step related connecting a battery charger - Ad… |
| TCU-26.2.12.2.1 | Over-the-air update | Sep 17, 2026 | Quality improvements include: -Addresses a bug that may cause updates to fail |
| TCU-26.2.12.2.2 | Over-the-air update | Sep 16, 2026 | Quality improvements include: -Addresses a bug that may cause updates to fail |
| ECG-26.2.12.3 | Over-the-air update | Sep 16, 2026 | Quality improvements include: -ePrivacy enhancements |
| ECG-26.2.11.4 | Over-the-air update | Sep 11, 2026 | Quality improvements include: - Enhanced system performance, disk usage limits and memory monitoring -Enhanced charge data monitoring |
| SSM 55131 | Service bulletin | Aug 27, 2026 | Some 2025-2026 Aviator/Explorer/Expedition/F-150/Mustang Mach-E/Nautilus/Navigator vehicles may exhibit the hands-free BlueCruise feature in… |
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 GSM-26.2651B 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 GSM-26.2651B 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 GSM-26.2651B cover?
The manufacturer filed it against 4 model years: 2024 Ford Mustang Mach-E, 2023 Ford Mustang Mach-E, 2022 Ford Mustang Mach-E, 2021 Ford Mustang Mach-E. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.