Mazda bulletin 03-001-24
What it saysSome vehicles may experience differential oil leaking from the oil seal (RH side) at the front differential. NHTSA’s full summary ↓
Mazda filed this with NHTSA as a service bulletin dated Feb 6, 2024, received Mar 5, 2024, about the suspension. It names 1 model year (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 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.
Some vehicles may experience differential oil leaking from the oil seal (RH side) at the front differential. This is caused by an inappropriate assembly process of the front differential to the oil pan (vehicle side). To eliminate this concern the front differential assembly process has been changed.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 03-001-24 | Service bulletin | Feb 6, 2024 | 10251297 | PDF, 393 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| TAA1-27-397A | Seal, Oil 1 [R] | — | eBay Motors → |
| TAA1-27-238A | Seal, Oil 1 [R] | — | eBay Motors → |
| G003-25-421 | Clip 1 [R] | — | eBay Motors → |
| D651-33-042A | Nut 2 [R] | — | eBay Motors → |
| 0810-17-121 | Plug, Magnet 2 [R] | — | eBay Motors → |
| 9956-41-800 | Washer 1 [R] | — | eBay Motors → |
| D601-17-495A | Plug 1 [R] | — | eBay Motors → |
| T060-26-169A | Pin, Snap 2 [R] | — | eBay Motors → |
Read by machine from the document NHTSA serves (5 pages), read Sep 30, 2026. A part number is shown only where it matches Mazda’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 465 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 group21 other manufacturer communications filed against the Mazda CX-90 under the same component group (suspension), newest first. The eight newest are listed; the rest are on the Mazda list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 02-001-26a | Service bulletin | Oct 27, 2026 | This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red. 02-001/26 04/29/26 Some customers may… |
| 02-002-26 | Service bulletin | May 27, 2026 | Some vehicles may exhibit a creaking or squeaking noise from the lower control arm at the front suspension when traveling over a bump while… |
| 02-001-26 | Service bulletin | Apr 30, 2026 | Some customers may complain that an abnormal noise is heard from the front suspension when driving on rough road surfaces or when passing ov… |
| SA-051-25 | Service bulletin | Nov 8, 2025 | Noise, Vibration, and Harshness (NVH) Diagnostic Guidelines Diagnostic Guidelines When diagnosing NVH concerns, it is essential to first cla… |
| 02-002-25a | Service bulletin | Sep 25, 2025 | Some vehicles may experience a knocking noise from the front suspension when driving on a rough road or traveling over bumps. This noise is… |
| 02-002-25 | Service bulletin | Jul 4, 2025 | Some vehicles may experience a knocking noise from the front suspension when driving on a rough road or traveling over bumps. This noise is… |
| 02-001-25a | Service bulletin | May 29, 2025 | Some vehicles may exhibit a creaking or squeaking noise from the lower control arm at the front suspension when traveling over a bump while… |
| MSP62 | Service campaign | Mar 12, 2025 | MSP62 - MAZDA SERVICE PROGRAM - 2024 CX-90 - ABNORMAL NOISE FROM FRONT OF VEHICLE. Mazda Motor Corporation has decided to conduct a Mazda Se… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Mazda, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Mazda 03-001-24 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 03-001-24 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. Every Mazda warranty extension on file lists the ones Mazda has filed.
Which vehicles does 03-001-24 cover?
The manufacturer filed it against 1 model year: 2024 Mazda CX-90. 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: built before 30 Sep 2023 — the build date is on the certification label in the driver’s door jamb.