Acura bulletin B24-045
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 5 model years (2020–2024). 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.
Get the next Acura RDX 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 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.
One of the 432 warranty extensions and special-coverage programs on file — every make, with the term each runs to.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B24-045 | Service bulletin | Dec 18, 2024 | 11012815 | PDF, 1,817 KB |
| B24-045 | Service bulletin | Jul 30, 2024 | 11005523 | PDF, 2,493 KB |
What the document itself lists
The manufacturer titles it “Warranty Extension: 2022–24 RDX Popping/Crackling from the”.
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 39817-THR-305 | — | — | |
| 39165-THR-AC0 | FAKRA splice repair service cable (Blue) | 2 | eBay Motors → |
| 39540-TJC-AE1 | — | — |
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.
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 Acura bulletins for the RDX
A weekly email, sent only in a week when Acura 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 5 model years this bulletin names have filed 536 complaints with NHTSA since 2015. 34 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
The contact owns a 2020 Acura Rdx. The contact stated while driving 35 MPH, while depressing the accelerator pedal the vehicle failed to accelerate. The contact stated several unknown warning lights were illuminated.
2020 Acura RDX · Electrical System · filed with NHTSA Aug 10, 2020 · ODI 11348392
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 group15 other manufacturer communications filed against the Acura RDX 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… |
| F.1.4.1 | Over-the-air update | Jan 21, 2026 | Over the Air System Update - System updates contain upgrades that fix operational errors and/or provide a variety of enhancements, which add… |
| B23-025 | Service bulletin | Dec 18, 2024 | Service Bulletin - A coaxial cable terminal was not manufactured to proper specifications. An improperly manufactured terminal may lead to p… |
| B24-058 | Service bulletin | Dec 17, 2024 | Service Bulletin - Under certain circumstances when reversing near a chain-link fence or highly reflective surfaces, a parking and back-up s… |
| 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&10182023901 | Service bulletin | Oct 18, 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&09192023901 | Service bulletin | Sep 19, 2023 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2023 RDXs with a client complaint of the center infotain… |
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 B24-045 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 B24-045 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 B24-045 cover?
The manufacturer filed it against 5 model years: 2024 Acura RDX, 2023 Acura RDX, 2022 Acura RDX, 2021 Acura RDX, 2020 Acura RDX. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.