Acura bulletin B24-025
What it saysCustomers are experiencing screeching, squeaking, rubbing, or scraping from the rear wheel area due to rocks are getting caught between the rear brake disk and splash guard. NHTSA’s full summary ↓
Acura filed this with NHTSA as a service bulletin dated Jul 2, 2025, received Jul 1, 2024, about the wheels — 3 documents under this number. It names 4 model years (2022–2025). 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 - Customers are experiencing screeching, squeaking, rubbing, or scraping from the rear wheel area due to rocks are getting caught between the rear brake disk and splash guard.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B24-025 | Service bulletin | Jul 2, 2025 | 11020585 | PDF, 535 KB |
| B24-025 | Service bulletin | Jul 31, 2024 | 11005522 | PDF, 968 KB |
| B24-025 | Service bulletin | Jun 21, 2024 | 11002722 | PDF, 1,418 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 90160-TZ5-A01 | Washer Bolt (12X49) | 8 | eBay Motors → |
| 90305-S3V-A11 | Spindle Nut (AWD Models Only) | 2 | eBay Motors → |
| 43254-TYA-A01 | Left-Rear Splash Guard | 1 | eBay Motors → |
| 43253-TYA-A01 | Right-Rear Splash Guard | 1 | eBay Motors → |
| 90103-SHJ-000 | Caliper Mounting Bolt (12x30) | 4 | eBay Motors → |
| 43254-TYA-A00 | brake splash guards | — | eBay Motors → |
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 8131A5 | Replace both rear brake splash guards | 1.1 hrs |
Read by machine from the document NHTSA serves (4 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 4 model years this bulletin names have filed 393 complaints with NHTSA since 2015. 44 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.
To: Consumer Financial Protection Bureau (CFPB) Subject: Urgent Complaint – Illegal Repossession, Lemon Law Obstruction, and Compensation Claim Against Honda Financial Services Dear Sir or Madam, I am filing a formal complaint regarding the illegal repossession of my leased 2024 Acura MDX, VIN , account number [INSERT ACCOUNT NUMBER], by…
2024 Acura MDX · Service Brakes · filed with NHTSA Nov 1, 2025 · ODI 11696964
Twice earlier in the year as I was pulling into a parking spot the brakes seemed to have failed, car auto accelerated, but was stopped by a parking block. Air suspension warning light was on, car was evaluated three times 6/2023-8/2023, air suspension sensor replaced, Acura reported car was otherwise fine.
2022 Acura MDX · Service Brakes · filed with NHTSA Nov 20, 2023 · ODI 11556090
1) I was struck by a vehicle that ran the stop sign at 50mph. After the impact my vehicle continued rolling forward and wouldn’t stop. I ended up a block away from the accident and my emergency brake, brake pedal and center console brake would not engage.
2023 Acura MDX · Service Brakes · filed with NHTSA Feb 19, 2026 · ODI 11718987
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.
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 B24-025 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 B24-025 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 B24-025 cover?
The manufacturer filed it against 4 model years: 2025 Acura MDX, 2024 Acura MDX, 2023 Acura MDX, 2022 Acura MDX. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.