Acura bulletin B24-004
What it saysThere is a popping or crackling from the speakers, a blank display, or no sound from the audio system due to a a loose connection in the MOST bus network. NHTSA’s full summary ↓
Acura filed this with NHTSA as a service bulletin dated Jan 31, 2024, received Feb 3, 2024, about the equipment. It names 3 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 communicationService Bulletin - There is a popping or crackling from the speakers, a blank display, or no sound from the audio system due to a a loose connection in the MOST bus network. You may also see a Network Loss message.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B24-004 | Service bulletin | Jan 31, 2024 | 10249631 | PDF, 3,843 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 39817-THR-305 | Splice boxes (4 Halves) | — | eBay Motors → |
| 39165-THR-AC0 | FAKRA splice repair service cable (Blue) | 2 | eBay Motors → |
| 39540-TJB-A01 | — | — |
Read by machine from the document NHTSA serves (13 pages), read Oct 4, 2026. A part number is shown only where it matches Acura’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.
Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
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.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
Find the infotainment for the 2024 RDX →Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
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 67 complaints with NHTSA since 2015. 7 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.
While driving through an active intersection, the vehicle experienced a sudden and complete loss of electrical power. The engine shut off without warning and all electrical systems immediately went dead. The instrument cluster went dark, the ignition was unresponsive, and the hazard lights did not function.
2022 Acura RDX · Electrical System · filed with NHTSA Apr 3, 2026 · ODI 11729130
This is a follow-up to my earlier complaint about the same vehicle, a 2023 Acura RDX A-Spec Advance. In August 2026 the vehicle was stolen from a public street after offenders broke through the exterior driver’s door handle, reached the wiring behind it, and lowered the window to get inside.
2023 Acura RDX · Electrical System · filed with NHTSA Oct 15, 2026 · ODI 11771373
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 equipment
Source: same model, same component group7 other manufacturer communications filed against the Acura RDX under the same component group (equipment), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| BTI&11272023902 | Service bulletin | Nov 27, 2023 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2023 RDXs with a client complaint of the center infotain… |
| BTI&11032023905 | Service bulletin | Nov 3, 2023 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2023 RDXs with a client complaint of the center infotain… |
| BTI&10042023902 | Service bulletin | Oct 4, 2023 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2023 RDXs with a client complaint of the center infotain… |
| BTI&08222023902 | Service bulletin | Aug 22, 2023 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2023 RDXs with a client complaint of the center infotain… |
| BTI&07102023905 | Service bulletin | Jul 10, 2023 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2023 RDXs with a client complaint of the center infotain… |
| BTI&06122023904 | Service bulletin | Jun 12, 2023 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2023 RDXs with a client complaint of the center infotain… |
| BPO05022022901 | Service bulletin | May 2, 2022 | Dealer message - American Honda is investigating a potential quality concern with RDX Accessory Cross Bar kit. Due to this investigation, Am… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Acura, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Acura B24-004 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 B24-004 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 Honda warranty extension on file lists the ones Honda has filed.
Which vehicles does B24-004 cover?
The manufacturer filed it against 3 model years: 2024 Acura RDX, 2023 Acura RDX, 2022 Acura RDX. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.