Honda bulletin ONL6MH04202024
Honda filed this with NHTSA as a manufacturer communication dated Apr 20, 2026, received Apr 22, 2026, about the electrical system. 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.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationOwner Notification Letter - The software update includes several system improvements designed to enhance the functionality of certain vehicle features. These enhancements may include updates related to braking, driver seat movement, virtual key card operation, adaptive cruise control, and active cabin ventilation.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| ONL6MH04202024 | Other | Apr 20, 2026 | 11031505 | not yet checked |
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.
Common questions
Source: NHTSA, 49 CFR 579.5Is Honda ONL6MH04202024 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 ONL6MH04202024 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 ONL6MH04202024 cover?
The manufacturer filed it against 1 model year: 2024 Honda Prologue. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.