BMW bulletin B640626
What it saysA “whistling” noise is heard from the centerconsole/instrument panel when using theheating and air conditioning (HVAC) system. NHTSA’s full summary ↓
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.
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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 | At NHTSA |
|---|---|---|---|---|
| B640626 | Service bulletin | Jul 24, 2026 | 11035402 | PDF, 552 KB |
What the document itself lists
Part the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 64 11 9 382 896 | Seal Set | 1 | eBay Motors → |
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 64 99 000 | Work time to replace the “HVAC box to the center console seal” (Associated work) | 2 FRU |
Read by machine from the document NHTSA serves (3 pages), read Sep 30, 2026. A part number is shown only where it matches BMW’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.
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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 body for the 2024 4 Series →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.
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What owners reported
Source: NHTSA complaint databaseOwners of the 2 model years this bulletin names have filed 29 complaints with NHTSA since 2015.
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 structure
Source: same model, same component group14 other manufacturer communications filed against these BMW models under the same component group (structure), newest first. The eight newest are listed; the rest are on the BMW list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 5135900100 | Warranty extension | Sep 3, 2026 | The coverage period for qualifying lower rear side panel water drain repair that addresses the issues described in the Service Information B… |
| B510626 | Service bulletin | Apr 23, 2026 | While driving on rough surfaces, a “tapping” noise can be heard from the tailgate area |
| B410725 | Service bulletin | Jan 8, 2026 | While driving on a smooth and/or uneven road, a “cracking” sound is heard from the rear wheel arch area (highlighted in orange) on either th… |
| B510324 | Service bulletin | Aug 20, 2025 | While opening any of the doors, a groaning sound is heard from the door brake. Doors open and close stiffly. |
| B410424 | Service bulletin | Aug 20, 2025 | A groaning sound from the front of the vehicle while driving can be heard, particularly while cornering. The groaning sound can be heard in… |
| 85800210NA | Warranty extension | Jul 2, 2025 | After carrying out the vehicle test, one or more of the stored faults indicate that the operation of the front bottom active air flap is obs… |
| B510725 | Service bulletin | Apr 17, 2025 | The trunk lid trim panel may partially comeloose/dangle (red arrows show the mostprevalent areas). |
| B511223 | Service bulletin | Apr 15, 2025 | A vehicle listed above may arrive with a Check Control Message (CCM), and/or malfunction indicator lamp(MIL) illuminated. After carrying out… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for BMW, by the number printed on the letter.
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. Every BMW warranty extension on file lists the ones BMW has filed.
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.