Mazda bulletin 09-041-24
What it saysSome customers may notice water entry into the front combination lights (as shown below). NHTSA’s full summary ↓
Mazda filed this with NHTSA as a service bulletin dated Aug 31, 2024, received Sep 4, 2024, about the exterior lighting. It names 6 model years (2016–2021). 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 notice water entry into the front combination lights (as shown below). This is due to poor sealing where rain or other water can enter inside the light. To eliminate this concern, the shape of the front combination light has been changed to improve sealing ability.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 09-041-24 | Service bulletin | Aug 31, 2024 | 11006899 | PDF, 356 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| DB4N-51-0K0A | — | — | |
| DB4N-51-0K0B | UNIT(R), HEAD LIGHT 1 Halogen | — | eBay Motors → |
| DB4N-51-0L0A | — | — | |
| DB4N-51-0L0B | UNIT(L), HEAD LIGHT 1 Halogen | — | eBay Motors → |
| DH5C-51-030C | UNIT(R), HEAD LIGHT 1 LED, 2018-2019MY | — | eBay Motors → |
| DH5C-51-040C | UNIT(L), HEAD LIGHT 1 LED, 2018-2019MY | — | eBay Motors → |
| DB4J-51-030G | UNIT(R), HEAD LIGHT 1 LED, 2016-2017MY | — | eBay Motors → |
| DB4J-51-040G | UNIT(L), HEAD LIGHT 1 LED, 2016-2017MY | — | eBay Motors → |
Read by machine from the document NHTSA serves (2 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 111 complaints with NHTSA since 2015. 7 of them name Exterior Lighting — 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.
Heavy condensation is occurring inside the driver side headlamp. A quick google search shows this is a common problem among Mazda owners and Mazda will not cover the repair. I am unable to get a Massachusetts state inspection sticker due to this
2018 Mazda CX-3 · Exterior Lighting · filed with NHTSA Mar 16, 2024 · ODI 11577723
The seals around headlights are failing and causing moisture infiltration. Limiting distance of visibility during night driving. I have found through forums that this is a common occurrence
2016 Mazda CX-3 · Exterior Lighting · filed with NHTSA Nov 28, 2021 · ODI 11441882
Both headlamp lights have water on it (Condensation ocurring on both headlamps) Please verify if this situation could be considered a safety hazard
2017 Mazda CX-3 · Exterior Lighting · filed with NHTSA May 29, 2023 · ODI 11524290
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.

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 09-041-24 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 09-041-24 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 09-041-24 cover?
The manufacturer filed it against 6 model years: 2021 Mazda CX-3, 2020 Mazda CX-3, 2019 Mazda CX-3, 2018 Mazda CX-3, 2017 Mazda CX-3, 2016 Mazda CX-3. 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: 2016-2022 CX-3 (Japan built): built before 11 Jul 2022; 2016-2022 CX-3 (Japan built): built before Aug 2024 — the build date is on the certification label in the driver’s door jamb.