Ford bulletin TSB 26-2421
What it saysReason for update: * Update the Service Procedure to: - Remove Step related connecting a battery charger - Add Step 7 and Step 29 along with Figure 4 to include mass damper remove and install. * Update the Parts list… NHTSA’s full summary ↓
Ford filed this with NHTSA as a service bulletin dated Sep 18, 2026, received Sep 21, 2026, about the power train. It names 2 model years (2024–2025). A service bulletin 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.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationWhat it applies to, as the document itself states it — the build window in the manufacturer’s own words, read by machine from the PDF NHTSA serves. The build date is on the certification label in the driver’s door jamb; the dealer settles a borderline vehicle by its VIN.
This bulletin updates 25-2622. Reason for update: * Update the Service Procedure to: - Remove Step related connecting a battery charger - Add Step 7 and Step 29 along with Figure 4 to include mass damper remove and install. * Update the Parts list: - Updated to include rear electric drive assembly studded bolts and nuts to secure the mass damper. Some of the vehicles listed in the Model statement above may exhibit at least one of the following conditions: * Stuck in park * "Service Vehicle Soon" message in the instrument panel cluster (IPC) * Illuminated powertrain malfunction (wrench) indicator with diagnostic trouble code (DTC) P07E6:71 stored in the secondary on-board diagnostic control module C (SOBDMC) This may be due to high ground resistance of the park pawl motor.
Trouble codes it names: P07E6
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| TSB 26-2421 | Service bulletin | Sep 18, 2026 | 11037420 | PDF, 2,951 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| RJ8Z-14301-ZA | Primary Drive Unit Harness | — | eBay Motors → |
| W505255-S450L | Ground Bolt | — | eBay Motors → |
| W722315-S439 | — | — | eBay Motors → |
| W722359-S439 | RDU Mounting Bolts With Damper Mounting | — | eBay Motors → |
| W520214-S440 | Mass Damper Nut (non-GT, non-Rally) | — | eBay Motors → |
Labour operations and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 262421A | 2024-2025 Mustang Mach-E: Retrieve DTCs, Replace The Ground Circuit GD351 Includes… | 1.9 hrs |
| 262421B | Extra Time To Reprogram The SOBDM (Can Be Claimed With Operation A) | 0.2 hrs |
| 262421C | Extra Time To Reprogram The BECM (Can Be Claimed With Operation A) | 0.1 hrs |
| 262421D | Extra Time To Reprogram The SOBDMB (Can Be Claimed With Operation A) | 0.1 hrs |
| 262421E | Extra Time To Reprogram The ABS (Can Be Claimed With Operation A) | 0.1 hrs |
| 262421F | Extra Time To Reprogram The SOBDMC (Can Be Clamed With Operation A) | 0.1 hrs |
Read by machine from the document NHTSA serves (17 pages), read Sep 29, 2026. A part number is shown only where it matches Ford’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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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 56 complaints with NHTSA since 2015. 45 of them name Electrical System, Power Train — 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.
Dash completely turned off. We could not see speed, gear, battery life, etc. See attached photo of the dash board above the steering wheel. Tried turning car off and on, tried resetting the monitor. Dealership service advisor witnessed this. The technician could not replicate it, and they did not have a solution but it is now back on.
2025 Ford Mustang Mach-E · Electrical System · filed with NHTSA Dec 20, 2025
Summary: My 2025 Ford Mustang Mach-E GT has repeatedly experienced a complete and unexpected loss of propulsion while driving in active traffic. Each time, the vehicle displayed a red “Stop Safely Now” warning with additional critical alerts, followed by an immediate loss of forward motion with no prior indication.
2025 Ford Mustang Mach-E · Power Train · filed with NHTSA Dec 11, 2025
On Thursday, May28 I was driving my 2025 Ford Mach-2 on Schrock Rd. in Columbus, Ohio at approximately 3:30 PM when the hood (the "frunk") of the car unexpectedly unlatched and opened, flying up to a vertical position and obscuring my view of traffic. I was driving in the left lane of this road at 40-45 mph.
2025 Ford Mustang Mach-E · Electrical System · filed with NHTSA Jun 3, 2026
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 power train
Source: same model, same component group8 other manufacturer communications filed against the Ford Mustang Mach-E under the same component group (power train), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| SCCM-25.AC.AD | Over-the-air update | Feb 26, 2026 | "Quality improvements include: - Robustness action to reduce the potential for inadvertent shifts to neutral when customers use the monostab… |
| PT-25.44.24 | Over-the-air update | Jan 9, 2026 | "25S65 Recall remedy -Prevents a potential lock-out condition caused by the vehicle's battery being discharged" |
| SSM 54403 | Service bulletin | Nov 26, 2025 | * 2021-2024 Bronco Sport built on or before 15-Dec-2024<br /> * 2022-2024 Mustang Mach-E<br /> * 2022-2025 Escape built on or before 22-May… |
| SSM 53973 | Service bulletin | Jun 25, 2025 | Some 2021-2024 Edge/Nautilus, 2021-2025 Bronco/Bronco Sport/E-Series/Escape/Corsair/Expedition/Navigator/Explorer/Aviator/F-150/F-Super Duty… |
| TSB 24-2187 | Service bulletin | Jun 10, 2024 | Some 2021-2023 Mustang Mach-E vehicles may exhibit a "1 Pedal Drive Fault - Press Brake Pedal To Reduce Speed" warning message displayed in… |
| TSB 24-2038 | Service bulletin | Feb 13, 2024 | This article supersedes 22-2253 to update the parts list. Some 2021 Mustang Mach-E vehicles built on or before 05-Oct-2021 may exhibit a clu… |
| SANVol 2 Issue 1 | Service bulletin | Jan 17, 2024 | The Service Awareness Newsletter is an informal communication that contains information that may not be presently available in a TSB, SSM, G… |
| TSB 23-2399 | Service bulletin | Dec 5, 2023 | Some 2021-2023 Mustang Mach-E vehicles may exhibit a condition where the high voltage battery stops charging when connected to level 1 or le… |
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 TSB 26-2421 a recall?
No. A service bulletin 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 TSB 26-2421 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 TSB 26-2421 cover?
The manufacturer filed it against 2 model years: 2025 Ford Mustang Mach-E, 2024 Ford Mustang Mach-E. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone. The document itself sets the build window: 2024-2025 Mustang Mach-E: built on or before 30 Jun 2025 — the build date is on the certification label in the driver’s door jamb.