Acura bulletin B24-046
What it saysA coaxial cable terminal was not manufactured to proper specifications. NHTSA’s full summary ↓
Acura filed this with NHTSA as a service bulletin dated Dec 18, 2024, received Aug 2, 2024, about the electrical system — 2 documents under this number. It names 3 model years (2021–2023). 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 - A coaxial cable terminal was not manufactured to proper specifications. An improperly manufactured terminal may lead to poor communication in the media-oriented system transport (MOST) bus network which can potentially affect the audio sound quality.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B24-046 | Service bulletin | Dec 18, 2024 | 11012816 | PDF, 1,279 KB |
| B24-046 | Service bulletin | Jul 30, 2024 | 11005524 | PDF, 1,506 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 39817-THR-305 | — | — | |
| 39165-THR-AB0 | FAKRA splice repair service cable (Green) | 4 | eBay Motors → |
| 39165-THR-AA0 | FAKRA splice repair service cable (Red) | 4 | eBay Motors → |
| 39165-TGV-305 | Page 2 of | 1 | eBay Motors → |
| 39540-TGV-A03 | FAKRA CONNECTOR HOUSING DISASSEMBLY/FAKRA SPLICE REPAIR SERVICE CABLE ASSEMBLY | — | eBay Motors → |
Read by machine from the document NHTSA serves (18 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.
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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 3 model years this bulletin names have filed 159 complaints with NHTSA since 2015. 18 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.
My TLX Tech 2023 lost complete power while I pulled up to a busy intersection on a dark and rainy day. As a puled to stop and my idle stop enabled the car was fine. Once I tried to accelerate the car immediately went into Park from Drive. All of the controls started to blink and the car powered down like a computer system who was on 0%.
2023 Acura TLX · Electrical System · filed with NHTSA Nov 10, 2023 · ODI 11554520
Car’s advertised anti-theft features are faulty. They have two tracking features with also both failed. When I contacted Acura they said this was a known issue and highly prevalent in NY, DC, FL, MD. Cars computer is cloneable and it takes less than 3 minutes to enter and steal without keys or breaking windows or enabling alarms
2023 Acura TLX · Electrical System · filed with NHTSA Nov 14, 2025 · ODI 11699323
We have a 2022 Acura TLX Type S and it has started to show an errors - Adaptive Damper System Problem. From what I can gather from reviewing articles on the Internet is that this problem is caused because of poor wiring design by Honda / Acura, which is causing speed sensors electronics to erode.
2022 Acura TLX · Electrical System · filed with NHTSA Jul 8, 2026 · ODI 11749059
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 group9 other manufacturer communications filed against the Acura TLX under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Acura list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| D.1.6.4 | Over-the-air update | May 18, 2026 | Over The Air Update - Vehicles equipped with the System Updates application are capable of downloading and installing Over the Air System Up… |
| ONL6M309172024 | Other | Sep 18, 2024 | Owner Notification Letter - A coaxial cable terminal was not manufactured to proper specifications. An improperly manufactured terminal may… |
| BBOM07302024902 | Other | Jul 30, 2024 | Dealer Message - A coaxial cable terminal was not manufactured to proper specifications. An improperly manufactured terminal may lead to poo… |
| BTI&07272023902 | Service bulletin | Jul 27, 2023 | Dealer Message -American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2023 TLXs with a client complaint of the ⓘ System Message… |
| BTI&07122023902 | Service bulletin | Jul 12, 2023 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2023 TLXs with a client complaint of the ⓘ System Messag… |
| BTI&06272023901 | Service bulletin | Jun 27, 2023 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2023 TLXs with a client complaint of the ⓘ System Messag… |
| BTI&06122023903 | Service bulletin | Jun 12, 2023 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2023 TLXs with a client complaint of the ⓘ System Messag… |
| BTI&05252023901 | Service bulletin | May 25, 2023 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2023 TLXs with a client complaint of the ⓘ System Messag… |
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 B24-046 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 B24-046 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 B24-046 cover?
The manufacturer filed it against 3 model years: 2023 Acura TLX, 2022 Acura TLX, 2021 Acura TLX. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.