Ford bulletin SSM 51924
What it says2023 Bronco vehicles built on or before 11-Jul-2023 and equipped with a 6-speaker sound system includes a non-operational rear amplifier. NHTSA’s full summary ↓
Ford filed this with NHTSA as a service bulletin dated Sep 14, 2023, received Oct 4, 2023, about the electrical system. It names 1 model year (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 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.
2023 Bronco vehicles built on or before 11-Jul-2023 and equipped with a 6-speaker sound system includes a non-operational rear amplifier. This non-operational amplifier (service part number N2DZ-18C804-B) will not produce sound by design from the rear subwoofer. The Ford accessories team offers a JBL sound bar for Bronco. The JBL sound bar is not compatible and will not function with Bronco vehicles equipped with the 6 speaker sound system built on or before 11-Jul-2023. The JBL non-amplified sound bar Ford accessory part numbers VM2DZ18808J and VM2DZ18808K will not work with this vehicle configuration. The Ford Accessory website is in the process of being updated.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| SSM 51924 | Service bulletin | Sep 14, 2023 | 10243536 | PDF, 98 KB |
What the document itself lists
Part the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| N2DZ-18C804-B | — | — |
Read by machine from the document NHTSA serves (1 page), 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.
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 1 model year this bulletin names have filed 230 complaints with NHTSA since 2015. 23 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.
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
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 group75 other manufacturer communications filed against the Ford Bronco 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… |
| 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… |
| 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-26.2.12.2.2 | 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 |
| PCM-26.10.3 | Over-the-air update | Sep 10, 2026 | 25S75 Recall remedy -Powertrain Control Module update to introduce logic to prevent low pressure fuel pump binding and maintain fuel flow to… |
| PCM-26.11.5 | Over-the-air update | Sep 4, 2026 | 25S75 Recall remedy -Powertrain Control Module update to introduce logic to prevent low pressure fuel pump binding and maintain fuel flow to… |
| SSM 55118 | Service bulletin | Aug 25, 2026 | Some of the following vehicles: * 2023-2025 F-Super Duty built on or before 02-Feb-2025 * 2024-2026 Ranger/Bronco/Mustang * 2024-2025 F-15… |
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 51924 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 51924 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 51924 cover?
The manufacturer filed it against 1 model year: 2023 Ford Bronco. 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: 2023 Bronco: built on or before 11 Jul 2023 — the build date is on the certification label in the driver’s door jamb.