Mazda bulletin 09-052-24
What it saysSome customers may experience the audio sound pausing when the engine restarts after i-stop operation under the following situations. NHTSA’s full summary ↓
Mazda filed this with NHTSA as a service bulletin dated Nov 22, 2024, received Dec 4, 2024, about the electrical system. It names 6 model years (2022–2024). 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 customers may experience the audio sound pausing when the engine restarts after i-stop operation under the following situations. The symptoms are caused by an improper part installation in the audio amplifier. A voltage drop error detection of the power source may be too sensitive.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 09-052-24 | Service bulletin | Nov 22, 2024 | 11011135 | PDF, 260 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| BDJA-66-A20F | — | — | |
| BHY0-66-A20 | AMP, POWER-AUDIO 1 Mazda | — | eBay Motors → |
| BHSB-66-A20B | AMP, POWER-AUDIO 1 Mazda | — | eBay Motors → |
| DFR7-66-A20D | AMP, POWER-AUDIO 1 CX-30 | — | eBay Motors → |
| KMV7-66-A20B | AMP, POWER-AUDIO 1 CX-90 | — | eBay Motors → |
| VA45-66-A20B | AMP, POWER-AUDIO 1 CX-50 | — | eBay Motors → |
Read by machine from the document NHTSA serves (4 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 6 model years this bulletin names have filed 623 complaints with NHTSA since 2015. 100 of them name Electrical System — 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 14th, 2026, while traveling at approximately 60 mph on the northbound 55 Freeway near the Katella exit, my vehicle suddenly began to shake violently without any prior warning. In response, I attempted to slow down by applying the brakes; however, the speedometer rapidly increased even as I maintained firm pressure on the brake pedal.
2023 Mazda Mazda3 · Electrical System · filed with NHTSA Jan 22, 2026 · ODI 11712753
The vehicle's Connectivity Master Unit (CMU) / infotainment system has experienced a complete, permanent internal electronic failure, logged by Diagnostic Trouble Code DTC U3000:49 (Control Module Internal Electronic Failure). The main display screen is completely dark at all times and never powers on or responds.
2022 Mazda Mazda3 · Electrical System · filed with NHTSA Aug 11, 2026 · ODI 11756362
The infotainment software is bricked. It happened when the battery died after purchasing it. The dealership told me to get a battery should be ok Now the infotainment system doesn't work and lane assist about put me into a guard rail the other day. I have no access to my cars functions and it is crazy scary
2022 Mazda CX-30 · Electrical System · filed with NHTSA Mar 14, 2026 · ODI 11724338
In depth: 2024 Mazda CX-90 electrical 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 electrical system
Source: same model, same component group167 other manufacturer communications filed against these Mazda models under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Mazda list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 09-027-26 | Service bulletin | Sep 29, 2026 | DESCRIPTION Some CX-70 and CX-90 PHEV vehicles may fail to start (enter READY mode) in cold weather, but the vehicle can often be started su… |
| SA-012-26d | Service bulletin | Sep 18, 2026 | DESCRIPTION Some customers may experience a message "TCU Malfunction. Have the Vehicle Inspected" in the instrument cluster. Additional sym… |
| SA-042-26a | Service bulletin | Sep 17, 2026 | Mazda Connected Services - Frequently Asked Questions (FAQ) This Service Alert supersedes the previously issued SAs listed below. The chang… |
| SA-041-26a | Service bulletin | Sep 11, 2026 | DESCRIPTION If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer b… |
| SA-038-26b | Service bulletin | Sep 10, 2026 | This Service Alert supersedes the previously issued service alert listed below. The changes are noted in Red text. SA-038/26 08/18/26 and 06… |
| SSPE1 | Emissions | Aug 20, 2026 | Special Service Program (SSPE1) - 2026 CX-50 Hybrid – Battery Label Concern Mazda Motor Corporation has decided to conduct a Special Service… |
| SA-054-26 | Service bulletin | Aug 20, 2026 | This Service Alert supersedes the previously issued Service Alerts listed below: The changes are noted in Red. Infotainment Reboot With Nav… |
| SA-053-26 | Service bulletin | Aug 19, 2026 | This Service Alert supersedes the previously issued bulletin(s) listed below. The changes are noted in Red text. SA-006/23 01/23/23 DESCRI… |
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 09-052-24 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 09-052-24 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 09-052-24 cover?
The manufacturer filed it against 6 model years: 2023 Mazda CX-30, 2022 Mazda CX-30, 2023 Mazda CX-50, 2024 Mazda CX-90, 2023 Mazda Mazda3, 2022 Mazda Mazda3. 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: 2022-2023 CX-30 (Mexico built): built before 1 Sep 2023; 2023 CX-50: built before 12 Jun 2023; 2024 CX-90: built before 4 Jul 2023 — the build date is on the certification label in the driver’s door jamb.