Acura bulletin ONL6YU04072025
What it saysOwner Notification Letter - Some 2024 ZDX vehicles’ Electric Park Brake (EPB) harness may not have enough clearance away from the half-shaft boot causing the harness to rub against the boot during normal driving… NHTSA’s full summary ↓
Acura filed this with NHTSA as a manufacturer communication dated Apr 7, 2025, received Apr 15, 2025, about the service brakes. It names 1 model year (2024). A manufacturer communication 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 communicationOwner Notification Letter - Some 2024 ZDX vehicles’ Electric Park Brake (EPB) harness may not have enough clearance away from the half-shaft boot causing the harness to rub against the boot during normal driving and accelerating wear to the boot.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| ONL6YU04072025 | Other | Apr 7, 2025 | 11017033 | PDF, 68 KB |
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 62 complaints with NHTSA since 2015. 21 of them name Service Brakes — 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.
On Wednesday, , I was driving near an intersection. There was a vehicle in front of me; however, they were accelerating as was I and at approximately the same speed. For no apparent reason, the automatic emergency braking activated and slammed on the brakes for absolutely no reason.
2024 Acura ZDX · Service Brakes · filed with NHTSA Jul 25, 2025 · ODI 11676284
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 service brakes
Source: same model, same component group4 other manufacturer communications filed against the Acura ZDX under the same component group (service brakes), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| ONL6YU04092026 | Other | Apr 9, 2026 | Owner Notification Letter - Some 2024 ZDX vehicles’ Electric Park Brake (EPB) harness may not have enough clearance away from the half-shaft… |
| ONL6YU032025 | Other | Mar 8, 2025 | Dealer Notification Letter - The Electric Park Brake (EPB) harness unit may have low clearance to the driveshaft boot resulting in increased… |
| BEBM03072025901 | Other | Mar 8, 2025 | Dealer Message - The Electric Park Brake (EPB) harness unit may have low clearance to the driveshaft boot resulting in increased wear. |
| B25-005 | Service bulletin | Mar 8, 2025 | Service Bulletin - The Electric Park Brake (EPB) harness may not have enough clearance away from the half-shaft boot causing the harness to… |
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 ONL6YU04072025 a recall?
No. A manufacturer communication 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 ONL6YU04072025 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 ONL6YU04072025 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.