Ford bulletin SSM 52015
What it saysSome 2023 F-Super Duty vehicles equipped with vacuum assist brakes and built on or before 01-Aug-2023 may exhibit an illuminated brake warning indicator with diagnostic trouble codes (DTC) C0047 and/or P0557 present. NHTSA’s full summary ↓
Ford filed this with NHTSA as a service bulletin dated Oct 24, 2023, received Nov 4, 2023, about the service brakes. It names 4 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 communicationSome 2023 F-Super Duty vehicles equipped with vacuum assist brakes and built on or before 01-Aug-2023 may exhibit an illuminated brake warning indicator with diagnostic trouble codes (DTC) C0047 and/or P0557 present. This may be due to the brake vacuum sensor. To correct the condition, remove and replace the brake vacuum sensor, part NK4Z-2C444-A. To prevent repeat concerns, install the sensor with the electrical connector pointed towards the identification label on the vacuum brake booster.
Trouble codes it names: C0047 P0557
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| SSM 52015 | Service bulletin | Oct 24, 2023 | 10244874 | PDF, 40 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: 2023 Ford F-550 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 3 model years this bulletin names have filed 89 complaints with NHTSA since 2015. 10 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
Vehicle does not remember its previous settings: The following features may or may not be on, even if you have actively went through and turned them off or on. Local dealership has had this truck over 4 times and for days at a time. Nothing has been resolved of these safety functions.
2023 Ford F-450 Super Duty · Service Brakes · filed with NHTSA Jan 31, 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… |
| SSM 52308 | Service bulletin | Feb 29, 2024 | Some 2022 F-Super Duty vehicles equipped with a 12.3 inch center display screen and 2023-2024 F-Super Duty vehicles may exhibit DTCs B1D08:1… |
| 24G01 | Service bulletin | Feb 22, 2024 | Certain 2023-2024 Model Year F-250/350 Vehicles - Brake Vacuum Sensor Replacement |
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 52015 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 52015 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 52015 cover?
The manufacturer filed it against 4 model years: 2023 Ford F-250 Super Duty, 2023 Ford F-350 Super Duty, 2023 Ford F-450 Super Duty, 2023 Ford F-550 SD. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.