Acura bulletin B25-033
What it saysAn update to A11 Radio Control Module software to address known issues. NHTSA’s full summary ↓
Acura filed this with NHTSA as a service bulletin dated Aug 1, 2025, received Aug 8, 2025, about the electrical system. It names 1 model year (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 - An update to A11 Radio Control Module software to address known issues.
Trouble codes it names: U0211 all 1 read from the document itself; NHTSA’s summary names none
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B25-033 | Service bulletin | Aug 1, 2025 | 11021757 | PDF, 444 KB |
What the document itself lists
Labour operations and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 0100B8 | Inspect software - no update | 0.2 hrs |
| 0105C5 | A11 Radio Control Module reprograming (includes inspection) | 0.7 hrs |
Read by machine from the document NHTSA serves (2 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 1 model year this bulletin names have filed 59 complaints with NHTSA since 2015. 12 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.
Upon pressing the on button the car would not go into drive or neutral from park. I noticed the red car light with an exclamation point staying on. After turning the car off/on it cleared and I was able to drive
2024 Acura ZDX · Electrical System · filed with NHTSA Jan 18, 2025 · ODI 11636709
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 group12 other manufacturer communications filed against the Acura ZDX 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 |
|---|---|---|---|
| ONL6WM092026Z | Other | Sep 25, 2026 | Owner Notification Letter - Certain 2024 ZDX vehicles may have improperly installed, or missing cavity plugs from the rear chassis harness e… |
| BEBM06262026901 | Other | Jun 26, 2026 | Dealer Message - Due to improper manufacturing, the rear chassis harness connector may not be properly sealed and only partially seated. An… |
| B26-044 | Service bulletin | Jun 26, 2026 | Service Bulletin - Certain 2024 ZDX vehicles may have improperly installed or missing cavity plugs from the rear chassis harness electrical… |
| ONL6MH04202024A | Other | Apr 20, 2026 | Owner Notification Letter - The software update includes several system improvements designed to enhance the functionality of certain vehicl… |
| BPOC04172026902 | Other | Apr 17, 2026 | Dealer Message -American Honda is requesting parts in support of a quality investigation related to Rear View Camera part number 86583111. A… |
| ONL6MZ04102026 | Other | Apr 10, 2026 | Owner Notification Letter - Some 2024 ZDX models may have misrouted camera wires causing the multi-view display images to be reversed. |
| B25-034 | Service bulletin | Aug 1, 2025 | Service Bulletin - Customers are experiencing issues with OnStar and HondaLink due to the software within the telematics control unit needin… |
| B25-025 | Service bulletin | May 23, 2025 | Service Bulletin - A Malfunction Indicator Lamp (MIL) may illuminate, or a “Service High Voltage” message may appear. Additionally, the 12-v… |
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 B25-033 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 B25-033 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 B25-033 cover?
The manufacturer filed it against 1 model year: 2024 Acura ZDX. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.