Ford bulletin SSM 52039
What it saysSome 2021-2023 Mustang Mach-E, 2022-2023 F-150 Lightning/e-Transit vehicles may exhibit a concern where the vehicle is unable to achieve 100 percent state of charge immediately after high voltage (HV) battery module… NHTSA’s full summary ↓
Ford filed this with NHTSA as a service bulletin dated Nov 6, 2023, received Nov 9, 2023, about the electrical system. It names 9 model years (2021–2023). 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 communicationSome 2021-2023 Mustang Mach-E, 2022-2023 F-150 Lightning/e-Transit vehicles may exhibit a concern where the vehicle is unable to achieve 100 percent state of charge immediately after high voltage (HV) battery module balancing and replacement. This may be due to the battery energy control module (BECM) adjusting the cell balance (conditioning) of the battery module and should be corrected within 22 days. If the vehicle otherwise functions as designed with no related diagnostic trouble codes (DTC) setting, this concern will be corrected automatically with no further actions required by the technician.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| SSM 52039 | Service bulletin | Nov 6, 2023 | 10245188 | PDF, 54 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 9 model years this bulletin names have filed 2,159 complaints with NHTSA since 2015. 717 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 2022 Ford F-150, the 26 owners who gave an odometer reading for Electrical System reported it at a median of 20,000 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
The contact owns a 2022 Ford F-150. The contact stated while driving 10 MPH, the messages "High Voltage Power Train Fault" and “Stop Driving and Contact Your Nearest Dealer" were displayed. The contact stated that he continued driving until it was safe to pull to the side of the road. The vehicle was towed to the residence.
2022 Ford F-150 Lightning · Electrical System · filed with NHTSA Aug 16, 2023 · ODI 11538881
In depth: 2023 Ford F-150 electrical problems → · 2022 Ford F-150 electrical problems → · 2023 Ford F-150 Lightning electrical problems → · 2023 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 group270 other manufacturer communications filed against these Ford models 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 |
|---|---|---|---|
| 26-2431 v2 | Service bulletin | Oct 22, 2026 | This bulletin supersedes 26-2226. Reason for update: update the Service procedure for 2021-2022 F-150 3.5L EcoBoost vehicles with new Ford D… |
| 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… |
| 25E10-S1 | Emissions | Sep 30, 2026 | NEW VEHICLE DELIVERY HOLD - Emissions Recall 25E10 - Supplement #1 Certain 2018-2020 Model Year F-150 Vehicles With 3.3L Engines and 2016-20… |
| SSM 55208 | Service bulletin | Sep 25, 2026 | Some 2024-2026 F-150, 2025 Explorer/Aviator, 2025-2026 Expedition/Navigator, or 2026 F-Super Duty vehicles may exhibit diagnostic trouble co… |
| TCU-26.2.11.5 | Over-the-air update | Sep 24, 2026 | Quality improvements include: -Addresses key off load battery usage caused by the Telematics Control Unit's Wi-Fi not powering down properly… |
| 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… |
| SYNC-26.2.8.5 | Over-the-air update | Sep 18, 2026 | 26C37 Recall remedy Prevents a potential rearview camera image obstruction caused by a menu displaying on top of it |
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 SSM 52039 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 SSM 52039 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 SSM 52039 cover?
The manufacturer filed it against 9 model years: 2023 Ford E-Transit, 2022 Ford E-Transit, 2023 Ford F-150, 2022 Ford F-150, 2023 Ford F-150 Lightning, 2022 Ford F-150 Lightning and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.