Acura bulletin B23-024
What it saysHonda has received customer complaints of the air conditioning system not blowing cold air due to an Oil/Refrigerant leak from the A/C compressor shaft seal. NHTSA’s full summary ↓
Acura filed this with NHTSA as a service bulletin dated Jun 19, 2024, received Jul 6, 2023, about the visibility/wiper — 4 documents under this number. It names 2 model years (2019–2020). 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 MDX 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 - Honda has received customer complaints of the air conditioning system not blowing cold air due to an Oil/Refrigerant leak from the A/C compressor shaft seal.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B23-024 | Service bulletin | Jun 19, 2024 | 11002724 | PDF, 5,628 KB |
| B23-024 | Service bulletin | Jan 24, 2024 | 10249632 | PDF, 5,672 KB |
| B23-024 | Service bulletin | Jul 14, 2023 | 10239511 | PDF, 2,050 KB |
| B23-024 | Service bulletin | Jun 30, 2023 | 10238825 | PDF, 2,173 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 38918-64A-318 | — | 1 | |
| 80872-SN7-003 | Discharge Hose O-Ring (1/2”) | 1 | eBay Motors → |
| 80871-SN7-003 | Suction Hose O-Ring (5/8”) | 1 | eBay Motors → |
| 38899-64A-A02 | RB100EV Oil | 1 | eBay Motors → |
| 38810-5J6-A22 | Evacuate and recharge | — | eBay Motors → |
Labour operations and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 614130 | Replace the A/C compressor shaft seal (includes inspection) | 2.3 hrs |
| 620025 | Evacuate and recharge | 0.7 hrs |
Read by machine from the document NHTSA serves (25 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.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
Find the defroster/defogger/hvac system for the 2020 MDX →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.
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 MDX
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 2 model years this bulletin names have filed 431 complaints with NHTSA since 2015.
At night the camera on the rear hatch produces a blurry picture. During the day it is clear. It always happens. I’ve taken it to two dealerships and they could not reproduce the issue because it needs to be dark around the car. I’ve brought in photographs. And they still can’t find an issue.
2019 Acura MDX · Visibility/Wiper · filed with NHTSA Dec 19, 2022 · ODI 11498148
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 visibility/wiper
Source: same model, same component group21 other manufacturer communications filed against the Acura MDX under the same component group (visibility/wiper), newest first. The eight newest are listed; the rest are on the Acura list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| B25-003 | Service bulletin | Sep 4, 2025 | Service Bulletin - An uneven sealing surface allows moisture to enter the inner taillight(s), causing one or both of the inner taillights no… |
| B25-026 | Service bulletin | Jul 9, 2025 | Service Bulletin - An uneven sealing surface allows moisture to enter the inner taillight(s), causing one or both of the inner taillights no… |
| BTI&04092025901 | Other | Apr 9, 2025 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022- 2024 MDXs & 2021-2025 TLXs with a client complaint of a… |
| BTI&11052024901 | Other | Nov 5, 2024 | Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2023-2025 MDXs with a client complaint of the front wiper mot… |
| BTI&10252024902 | Other | Oct 25, 2024 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2025 MDXs with a client complaint of a high-pitched nois… |
| BTI&10212024905 | Other | Oct 21, 2024 | Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2023-2025 MDXs with a client complaint of the front wiper mot… |
| BTI&10042024902 | Other | Oct 4, 2024 | Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2023-2025 MDXs with a client complaint of the front wiper mot… |
| BTI&09162024902 | Other | Sep 17, 2024 | Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2023-2025 MDXs with a client complaint of the front wiper mot… |
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 B23-024 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 B23-024 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 B23-024 cover?
The manufacturer filed it against 2 model years: 2020 Acura MDX, 2019 Acura MDX. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.