Acura bulletin ONL6AX01302026
What it saysOwner Notification Letter - Under certain circumstances, after coming to a stop and the idle stop feature engaging, the vehicle may not automatically restart. NHTSA’s full summary ↓
Acura filed this with NHTSA as a manufacturer communication dated Jan 31, 2026, received Feb 6, 2026, about the fuel/propulsion system. It names 5 model years (2016–2020). 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 - Under certain circumstances, after coming to a stop and the idle stop feature engaging, the vehicle may not automatically restart. Acura is providing a product update with a new PGM-FI software update to fix this issue.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| ONL6AX01302026 | Other | Jan 31, 2026 | 11028523 | not found |
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 5 model years this bulletin names have filed 1,247 complaints with NHTSA since 2015. 156 of them name Fuel/Propulsion 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.
On the 2016 Acura MDX, the 14 owners who gave an odometer reading for Fuel/Propulsion System reported it at a median of 64,053 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
There is a recall on my 2020 Acura MDX and I have been going to the local Acura dealer to get the part for the last 6 months and every time I go they tell me they are still waiting for the part. Periodically, the vehicle lurches while I am driving causing a major back and forth tugging and jerking. This is very unsafe.
2020 Acura MDX · Fuel/Propulsion System · filed with NHTSA Dec 12, 2024 · ODI 11630480
Received recall notice Feb 2024 Tried 3 times to get fixed no fuel pump available yet This is a safety recall issue and should be fixed immediately Please help expediate this urgent issue
2019 Acura MDX · Fuel/Propulsion System · filed with NHTSA Sep 10, 2024 · ODI 11613885
In depth: 2018 Acura MDX fuel system problems →
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 fuel/propulsion system
Source: same model, same component group6 other manufacturer communications filed against the Acura MDX under the same component group (fuel/propulsion system), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| B16-008 | Service bulletin | Sep 4, 2024 | Service bulletin - The high pressure fuel pump area chirps after the engine is warm. The high pressure fuel pump is making a chirp noise. NO… |
| BTI&01182023901 | Service bulletin | Jan 18, 2023 | Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2020-2022 MDXs & RDXs with a client complaint of the Check En… |
| BTI&05102022901 | Service bulletin | May 10, 2022 | American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RLXs & TLXs with a client complaint of the Malfunction Indicat… |
| BTI&03282022903 | Service bulletin | Mar 28, 2022 | Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Ma… |
| BTI&03112022904 | Service bulletin | Mar 11, 2022 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Ma… |
| BTI&01212022902 | Service bulletin | Jan 21, 2022 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Ma… |
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 ONL6AX01302026 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 ONL6AX01302026 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 ONL6AX01302026 cover?
The manufacturer filed it against 5 model years: 2020 Acura MDX, 2019 Acura MDX, 2018 Acura MDX, 2017 Acura MDX, 2016 Acura MDX. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.