Mazda bulletin SA-046-25
What it saysSome engine components like the timing chain cover and oil pan on the CX-50 Hybrid require the use of Threebond 1207B during installation. NHTSA’s full summary ↓
Mazda filed this with NHTSA as a service bulletin dated Oct 2, 2025, received Nov 5, 2025, about the engine. It names 2 model years (2025–2026). 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.
Get the next Mazda CX-50 bulletin by email Weekly, only when something new is filed. Nothing else; one-click unsubscribe.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationSome engine components like the timing chain cover and oil pan on the CX-50 Hybrid require the use of Threebond 1207B during installation. This sealant should be locally sourced when needed. NOTE: The following link is provided as a convenient sourcing option. https://www.amazon.com/Three-Bond-Performance-Adhesion-Gasket/dp/B008BYPRRI
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| SA-046-25 | Service bulletin | Oct 2, 2025 | 11025001 | PDF, 105 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 themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Email me new Mazda bulletins for the CX-50
A weekly email, sent only in a week when Mazda files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
What owners reported
Source: NHTSA complaint databaseOwners of the 2 model years this bulletin names have filed 62 complaints with NHTSA since 2015. 2 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.
I own a brand-new 2026 Mazda CX-50 Hybrid that is currently under the manufacturer's warranty. I am reporting an intermittent failure of the vehicle to respond normally to a selected driving direction. During the first incident on August 28, 2026, I had shifted the vehicle into Reverse.
2026 Mazda CX-50 · Engine · filed with NHTSA Sep 21, 2026 · ODI 11765952
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 group28 other manufacturer communications filed against the Mazda CX-50 under the same component group (engine), newest first. The eight newest are listed; the rest are on the Mazda list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| SA-038-26a | Service bulletin | Sep 4, 2026 | This Service Alert supersedes the previously issued service alert listed below. The changes are noted in Red text. SA-038/26 06/15/26 DESCR… |
| SA-048-26 | Service bulletin | Aug 6, 2026 | Some vehicle may exhibit the CHECK ENGINE light on with DTC P0524 (Engine oil pressure control system: Oil pressure decrease) and no abnorma… |
| SA-047-26 | Service bulletin | Aug 4, 2026 | Some customers may experience: The fuel fill door will not release until multiple button applications. The gas pump dispenser/nozzle is clic… |
| SA-041-26 | Service bulletin | Jun 19, 2026 | This SA supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-061/25 12/17/25 DESCRIPTION If you encounter a… |
| SA-026-26 | Service bulletin | Apr 16, 2026 | This Service Alert supersedes the previously issued M-Tip(s) listed below. The changes are noted in Red text. MT-002/19 09/30/19 and 12/19/1… |
| SSPE0 | Service campaign | Apr 11, 2026 | Subject: Notification of Special Service Program (SSPE0) - 2025 CX-50 Hybrid - Hybrid System Failure Displayed on Instrument Cluster… |
| 30-001-26a | Service bulletin | Mar 24, 2026 | DESCRIPTION Hybrid system failure displayed on meter with DTC P2530:12.… |
| SA-014-26 | Service bulletin | Mar 11, 2026 | This Service Alert supersedes the previously issued SA(s) and TSB(s) listed below: The changes are noted in Red. SA-035/24 05/31/24 DESCRIPT… |
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 SA-046-25 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 SA-046-25 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 SA-046-25 cover?
The manufacturer filed it against 2 model years: 2026 Mazda CX-50, 2025 Mazda CX-50. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.