Ford bulletin SSM 52357
What it saysSome 2021-2024 Bronco Sport vehicles equipped with a 1.5L EcoBoost engine may exhibit water coolant pump leaks. NHTSA’s full summary ↓
Ford filed this with NHTSA as a service bulletin dated Mar 14, 2024, received Apr 4, 2024, about the engine. It names 18 model years (2021–2024). 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 communicationWhat it applies to, as NHTSA’s summary states it — build dates and equipment as the manufacturer filed them. The dealer checks the VIN and the build date on the door jamb; a vehicle outside the window is not covered by this bulletin.
Some 2021-2024 Bronco Sport vehicles equipped with a 1.5L EcoBoost engine may exhibit water coolant pump leaks. This may be due to contamination in the coolant system. To correct this condition and prevent recurrent water pump failures, perform a coolant system flush. Refer to the Workshop Manual (WSM), Section 303-03A Engine Cooling - 1.5L EcoBoost > General Procedures > Engine Cooling System Flushing > Steps 1-8. Then replace the coolant pump. Refer to the WSM, Section Engine Cooling - 1.5L EcoBoost > Removal and Installation. Fill and bleed the coolant system properly. Refer to the WSM, Section 303-03A Engine Cooling - 1.5L EcoBoost > General Procedures > Engine Cooling System Draining, Vacuum Filling and Bleeding. Note: Repeat steps 10-12 a total of 10 times to remove any remaining air trapped in the system.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| SSM 52357 | Service bulletin | Mar 14, 2024 | 10252626 | PDF, 69 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; 2024 Ford F-550 SD; 2023 Ford F-600 SD; 2024 Ford F-600 SD; 2024 Ford F-650 Incomplete Chassis; 2023 Ford F-650 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 10 model years this bulletin names have filed 1,545 complaints with NHTSA since 2015. 360 of them name Engine — 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 2021 Ford Bronco Sport, the 53 owners who gave an odometer reading for Engine reported it at a median of 52,000 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 owned a 2024 Ford F-450 SD. The contact stated that while his fiancée was driving with cruise control set to 57 MPH, there was an abnormally strong smoky odor inside the cabin of the vehicle. No warning light was illuminated. The driver pulled over to the side of the road and there were flames coming from the engine bay.
2024 Ford F-450 Super Duty · Engine · filed with NHTSA Aug 18, 2026 · ODI 11757734
The contact owns a 2024 Ford F-350 SD. The contact stated while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to the dealer, who determined that there was a misfire in cylinders #6 and #8. The dealer later determined that the misfire was in cylinders #6 and #7.
2024 Ford F-350 Super Duty · Engine · filed with NHTSA Mar 12, 2025 · ODI 11647915
Vehicle was being driven by a driver service to be delivered to the home garage after production was completed at the manufacturer. During transit, the operator reported that the low fuel pressure warning light came on immediately followed by flames in the engine compartment
2023 Ford F-450 Super Duty · Engine · filed with NHTSA May 19, 2025 · ODI 11661929
In depth: 2022 Ford Bronco Sport engine problems → · 2021 Ford Bronco Sport engine 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 engine
Source: same model, same component group59 other manufacturer communications filed against these Ford models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Ford list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| SSM 55283 | Service bulletin | Oct 27, 2026 | Some 2023-2024 Bronco Sport vehicles equipped with a 1.5L EcoBoost engine may exhibit an "Engine Coolant Over-Temperature" message and an il… |
| SSM 55211 | Over-the-air update | Oct 2, 2026 | 2023-2026 Escape and 2025-2026 Bronco Sport vehicles equipped with a 1.5L EcoBoost engine may require removal of the turbocharger wastegate… |
| 26N03 | Other | Aug 26, 2026 | Customer Satisfaction Program 26N03 Certain 2017-2019 Model Year Super Duty Vehicles w/ 6.7L Diesel Engines Diesel Particulate Filter Replac… |
| 26E02 | Other | Aug 26, 2026 | NEW VEHICLE DELIVERY HOLD Emissions Recall 26E02 Certain 2016-2019 F-650 - 750 and 2017-2019 F-350 - 550 Vehicles Equipped With 6.7L Diesel… |
| 25M01 | Other | Jul 28, 2026 | Customer Satisfaction Program 25M01 Certain 2021 Model Year F-150 3.0L Diesel Engine and 2020-2022 Model Year Super Duty with 6.7L Diesel En… |
| 25N14 | Other | Jun 24, 2026 | Certain 2022 Model Year F-250 - F-600 with 6.7L Diesel Engines One-Time Replacement for Diesel Particulate Filter Assembly Failures, If Re… |
| 25E09 | Emissions | Jun 24, 2026 | NEW VEHICLE DEMONSTRATION / DELIVERY HOLD Emissions Recall 25E09 Certain 2022 Model Year F-250 - F-600 Vehicles with 6.7L Engines Powertrain… |
| TSB 26-2256 | Service bulletin | Jun 19, 2026 | This article supersedes TSB 25-2572 to update the Parts List to correct the part number LC3Z-6006-L to LC3Z-6781-A, remove the flex plate bo… |
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 52357 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 52357 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 52357 cover?
The manufacturer filed it against 18 model years: 2024 Ford Bronco Sport, 2023 Ford Bronco Sport, 2022 Ford Bronco Sport, 2021 Ford Bronco Sport, 2024 Ford F-250 Super Duty, 2023 Ford F-250 Super Duty and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.