Ford bulletin 23B21 S1
What it saysCertain 2023 Model Year F-150 and Bronco Vehicles - Gateway Module Programing NHTSA’s full summary ↓
Ford filed this with NHTSA as a service bulletin dated Feb 19, 2024, received Mar 5, 2024, about the electrical system. It names 3 model years (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 communicationCertain 2023 Model Year F-150 and Bronco Vehicles - Gateway Module Programing
Trouble codes it names: U0146 U2402 all 2 read from the document itself; NHTSA’s summary names none
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 23B21 S1 | Service bulletin | Feb 19, 2024 | 10251232 | PDF, 1,273 KB |
What the document itself lists
The manufacturer titles it “Customer Satisfaction Program 23B21 – Supplement # 1”.
Part the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| OVER-THE-AIR | — | — |
Read by machine from the document NHTSA serves (23 pages), read Sep 30, 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.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
Find the software for the 2023 Bronco →Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
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 3 model years this bulletin names have filed 856 complaints with NHTSA since 2015. 220 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 2023 Ford F-150, the 13 owners who gave an odometer reading for Electrical System reported it at a median of 10,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
The instrument panel that shows the speed and battery capacity went blank and was black. The car still drove and I was only 4 miles from home. I was not able to tell what speed I was traveling at, what warning condition or alarms may have been triggered and I did not know what the charge was on the car.
2023 Ford F-150 Lightning · Electrical System · filed with NHTSA Feb 26, 2024 · ODI 11574079
Sporadically the vehicle will not start. 200 miles on the 2023 powerboost and this has happened 3 times. Vehicle says pull over safely now and will not allow me to put into gear. picture of battery on dash. Vehicle always sitting in heated insulated garage. Waited a day and then it starts.
2023 Ford F-150 · Electrical System · filed with NHTSA Dec 21, 2023 · ODI 11561250
2nd day of ownership and rear view camera failed. Called Ford and they said it was two months until they have an appointment
2023 Ford Bronco · Electrical System · filed with NHTSA Feb 8, 2023 · ODI 11506258
In depth: 2023 Ford F-150 electrical problems → · 2023 Ford F-150 Lightning 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 group239 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… |
| SSM 55240 | Service bulletin | Oct 12, 2026 | Some 2021-2024 Bronco vehicles may exhibit an illuminated red brake warning indicator with diagnostic trouble code (DTC) C0049:01 stored in… |
| 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… |
| TSB 26-2380 | Service bulletin | Sep 24, 2026 | This article supersedes TSB 25-2575 to update the Parts list to add the applicable body wiring harnesses and underbody shield bolts. Some ve… |
| 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… |
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 23B21 S1 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 23B21 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 23B21 S1 cover?
The manufacturer filed it against 3 model years: 2023 Ford Bronco, 2023 Ford F-150, 2023 Ford F-150 Lightning. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.