Acura bulletin B23-029
Acura filed this with NHTSA as a service bulletin dated Apr 18, 2025, received Sep 6, 2023, about the engine and engine cooling — 4 documents under this number. It names 2 model years (2017–2018). 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.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationService Bulletin - The lock-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock up piston. The reduced lock-up clutch capacity results in the transmission indicator flashing “Dâ€� and set DTC P0741 Torque Converter Clutch Circuit Performance or Stuck OFF.
Documents filed under this number
| Document | Kind | Dated | NHTSA id |
|---|---|---|---|
| B23-029 | Service bulletin | Apr 18, 2025 | 11017329 |
| B23-029 | Service bulletin | Feb 26, 2024 | 10251152 |
| B23-029 | Service bulletin | Nov 17, 2023 | 10245558 |
| B23-029 | Service bulletin | Aug 31, 2023 | 10241888 |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5; the full text comes from the manufacturer or a dealer. 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. Quote it 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.
Common questions
Source: NHTSA, 49 CFR 579.5Is Acura B23-029 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 B23-029 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.
Which vehicles does B23-029 cover?
The manufacturer filed it against 2 model years: 2018 Acura RDX, 2017 Acura RDX. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.