Ford bulletin SSM 52308
What it saysSome 2022 F-Super Duty vehicles equipped with a 12.3 inch center display screen and 2023-2024 F-Super Duty vehicles may exhibit DTCs B1D08:11 and/or B1D09:11 stored in the trailer module (TRM) with a Trailer Brake… NHTSA’s full summary ↓
Ford filed this with NHTSA as a service bulletin dated Feb 29, 2024, received Mar 5, 2024, about the service brakes. It names 19 model years (2022–2024). 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 2022 F-Super Duty vehicles equipped with a 12.3 inch center display screen and 2023-2024 F-Super Duty vehicles may exhibit DTCs B1D08:11 and/or B1D09:11 stored in the trailer module (TRM) with a Trailer Brake System Fault See Manual message in the instrument panel cluster (IPC) when a trailer is not connected to the vehicle. This may be due to water intrusion at the back side of the trailer tow connector. Inspect connector C4099 and the trailer tow connector (14489) for signs of corrosion or damage. If corrosion or damage is present at either connector, replace the female side of the C4099 connector using service pig tail kit (3U2Z-14S411-JXC) and the trailer tow connector. If corrosion or damage is not present, refer to the Workshop Manual (WSM) Section 417-01 Exterior Lighting, Diagnosis and Testing for additional diagnosis. For claiming, use causal part 14489 and applicable labor operations in Section 01 of the Service Labor Time Standards (SLTS) Manual.
Trouble codes it names: B1D08 B1D09
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| SSM 52308 | Service bulletin | Feb 29, 2024 | 10250854 | PDF, 73 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 themAlso filed against model years this site has no page for: 2022 Ford F-550 SD; 2023 Ford F-550 SD; 2022 Ford F-600 SD; 2023 Ford F-600 SD; 2024 Ford F-650 Incomplete Chassis; 2022 Ford F-650 SD; 2023 Ford F-650 SD; 2022 Ford F-750 SD; 2023 Ford F-750 SD; 2024 Ford F-750 SD.
A 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 437 complaints with NHTSA since 2015. 27 of them name Service Brakes — 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.
there hasn't been an incident per say and these might not be a safety concern. however i would like to list my grievances here just so there's documentation. my radio has some type of glitch where the phone calls get static like its digital, also the mirrors don't fold in all the time when locked with the key fob, the brakes have…
2023 Ford F-250 Super Duty · Service Brakes · filed with NHTSA Mar 15, 2024
The vehicle has a Gross Combined Weight Rating (GCWR) of 30,000 LBS. While towing, the vehicle would show on the dash at intermittent times "Trailer not connected." When this occurs, the trailer brakes are no longer operating placing all braking on the tow vehicle with the potential for brake fade or complete brake failure and…
2022 Ford F-350 Super Duty · Service Brakes · filed with NHTSA May 23, 2023
04/2022 F-450 with 13,000 miles (garaged over winter) no boat towing. Reporting the first incident/time connected to trailer with electric over hydraulic brakes is 18 months after purchasing the truck. The F-450 has intermittent power to the #5 pin (+Batt) of the 7-way trailer connection.
2022 Ford F-450 Super Duty · Service Brakes · filed with NHTSA Nov 18, 2024
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 service brakes
Source: same model, same component group10 other manufacturer communications filed against these Ford models under the same component group (service brakes), newest first. The eight newest are listed; the rest are on the Ford list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| SSM 54448 | Service bulletin | Dec 16, 2025 | Some 2017-2026 F-Super Duty vehicles may exhibit a pull/drift condition during braking. This may be due to the brake pads needing to be brok… |
| SSM 54420 | Service bulletin | Dec 3, 2025 | Some 2023-2026 F-Super Duty vehicles built on or before 01-Oct-2025 may exhibit a "Hill Start Assist Unavailable" and/or "Parking Brake Limi… |
| SSM 54160 | Service bulletin | Aug 22, 2025 | Some 2023-2025 F-Super Duty vehicles may exhibit a "Hill Start Assist Unavailable" and/or "Parking Brake Limited Function" message at vehicl… |
| SSM 53892 | Service bulletin | Jun 11, 2025 | Some 2023-2025 F-Super Duty vehicles may exhibit a "Hill Start Assist Unavailable" and/or "Parking Brake Limited Function" message at vehicl… |
| SSM 53239 | Service bulletin | Dec 17, 2024 | Some 2023-2025 F-Super Duty vehicles may require a replacement of the anti-lock brake system (ABS) module (2C219) during normal workshop man… |
| SSM 52590 | Service bulletin | Jun 5, 2024 | Some 2023-2024 F-Super Duty vehicles may require a replacement of the anti-lock brake system (ABS) module for various reasons. Replacing the… |
| 24G01 | Service bulletin | Feb 22, 2024 | Certain 2023-2024 Model Year F-250/350 Vehicles - Brake Vacuum Sensor Replacement |
| SSM 52015 | Service bulletin | Oct 24, 2023 | Some 2023 F-Super Duty vehicles equipped with vacuum assist brakes and built on or before 01-Aug-2023 may exhibit an illuminated brake warni… |
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 52308 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 52308 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 52308 cover?
The manufacturer filed it against 19 model years: 2024 Ford F-250 Super Duty, 2023 Ford F-250 Super Duty, 2022 Ford F-250 Super Duty, 2024 Ford F-350 Super Duty, 2023 Ford F-350 Super Duty, 2022 Ford F-350 Super Duty and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.