Ford bulletin 24N01 S1
What it saysIn some of the affected vehicles, the rear axle bolt may fracture. NHTSA’s full summary ↓
Ford filed this with NHTSA as a service bulletin dated Oct 15, 2024, received Nov 5, 2024, about the suspension. It names 3 model years (2020–2022). 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 communicationIn some of the affected vehicles, the rear axle bolt may fracture. A fractured rear axle bolt will allow the rear axle housing to move out of position, resulting in severe noise and vibration. If the rear axle bolt breaks, the driveshaft or half shafts may become disconnected, resulting in loss of transmission torque to the rear wheels. Transmission torque is necessary to hold the vehicle in park and is also needed for the vehicle to move forward or backward. Reason for supplement: updated tech instructions and parts list update
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 24N01 S1 | Service bulletin | Oct 15, 2024 | 11009831 | PDF, 4,608 KB |
What the document itself lists
The manufacturer titles it “Customer Satisfaction Program 24N01 - Supplement #1”.
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| L1MZ-4B425-D | Revised Rear Subframe Bushing | 1 | eBay Motors → |
| W719362-S439 | Toe Link to Knuckle Bolt (1 required – 4 in a pack) | 1 | eBay Motors → |
| W520516-S441 | Toe Link to Knuckle Nut | 1 | eBay Motors → |
| W714297-S440 | Lower Arm to Knuckle Nut (1 required – 2 in a pack) | 1 | eBay Motors → |
| W720988-S439 | Differential Axle Rear Cover Housing Bolt to Rear | — | eBay Motors → |
| W717867-S900 | Differential Axle Front Bushing Housing Support Bolts | — | eBay Motors → |
| W719459-S439 | Upper Arm to Knuckle Bolt (1 required – 4 in a pack) | 1 | eBay Motors → |
| W520214-S440 | Upper Arm to Knuckle Nut (1 required – 2 in a pack) | 1 | eBay Motors → |
| W720034-S440 | Shock Absorber Lower Nut (1 required – 4 in a pack) | 1 | eBay Motors → |
| LB5Z-3B477-A | Wheel Hub Nut | 1 | eBay Motors → |
| W717822-S439 | Driveshaft Center Bearing Bolts | — | eBay Motors → |
| W719511-S439 | Flexplate Coupling to Transmission Bolts | — | eBay Motors → |
| L1MZ-3C084-A | Halfshaft Seal | 2 | eBay Motors → |
| W719430-S439 | Brake Caliper Bolts (2 required – 4 in a pack) | 2 | eBay Motors → |
| XY-75W85-QL | Differential Oil | 2 | eBay Motors → |
| WSK-M2G351-A6 | equivalent – Specification | — | eBay Motors → |
Read by machine from the document NHTSA serves (25 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.
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 1,975 complaints with NHTSA since 2015.
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 suspension
Source: same model, same component group5 other manufacturer communications filed against the Ford Explorer under the same component group (suspension), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| TSB 25-2568 V2 | Service bulletin | Sep 16, 2026 | This article supersedes TSB 25-2373 to update a print error on publication. Some vehicles listed in the model statement above may exhibit an… |
| TSB 26-2242 | Service bulletin | May 19, 2026 | This bulletin supersedes 25-2213. Reason for update: update the Service Procedure to add notes to clarify the customer symptoms, applicabili… |
| SSM 54809 | Service bulletin | May 7, 2026 | Some 20242025 Explorer vehicles built on 01-Feb-2024 and through 31-Jul-2024 may exhibit a rattle/clunk/knock noise from the front suspensi… |
| TSB 25-2568 | Service bulletin | Jan 7, 2026 | This article supersedes TSB 25-2373 to update a print error on publication. Some vehicles listed in the model statement above may exhibit an… |
| SSM 52405 | Service bulletin | Apr 2, 2024 | Some 2023 Explorer vehicles built on 01-Dec-2022 and through 31-Aug-2023 may exhibit a rattle/clunk/knock/pop/thump noise from the front sus… |
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 24N01 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 24N01 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 24N01 S1 cover?
The manufacturer filed it against 3 model years: 2022 Ford Explorer, 2021 Ford Explorer, 2020 Ford Explorer. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.