BMW bulletin B640626
BMW filed this with NHTSA as a service bulletin dated Jul 24, 2026, received Jul 31, 2026, about the structure. It names 2 model years (2024). 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 communicationA “whistling� noise is heard from the centerconsole/instrument panel when using theheating and air conditioning (HVAC) system. Heard with the blower motor set tospeed 2 or above Noise goes away on high blower speed Noise is loudest with the vents on theback of the center console in the closedposition Noise is heard the most near thecharging tray (where center consolemeets instrument panel)
Document filed under this number
| Document | Kind | Dated | NHTSA id |
|---|---|---|---|
| B640626 | Service bulletin | Jul 24, 2026 | 11035402 |
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 BMW B640626 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 B640626 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 B640626 cover?
The manufacturer filed it against 2 model years: 2024 BMW 4 Series, 2024 BMW i4. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.