BMW bulletin B640124
What it saysA drumming noise is heard when the air conditioning system is operating. NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated Jun 17, 2024, received Feb 1, 2024, about the equipment — 3 documents under this number. It names 3 model years (2023–2024). 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 communicationWhat it applies to, as the document itself states it — the build window in the manufacturer’s own words, read by machine from the PDF NHTSA serves. The build date is on the certification label in the driver’s door jamb; the dealer settles a borderline vehicle by its VIN.
A drumming noise is heard when the air conditioning system is operating. Service parts are not yet available for this repair. This bulletin will be updated once the service repair is ready.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B640124 | Service bulletin | Jun 17, 2024 | 11002669 | PDF, 420 KB |
| B640124 | Service bulletin | Feb 20, 2024 | 10250603 | PDF, 1,372 KB |
| B640124 | Service bulletin | Jan 9, 2024 | 10249030 | PDF, 576 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 83 23 2 360 412 | Lubricant G14 | — | eBay Motors → |
| 83 19 2 468 442 | BMW Antifreeze/Coolant (DN = 1 Gallon Concentrate) - HT | 12 | eBay Motors → |
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 00 76 640 | Additional work/replace the condensation drainage hose | 2 FRU |
Read by machine from the document NHTSA serves (7 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 defroster/defogger/hvac system for the 2024 i5 →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 3 model years this bulletin names have filed 44 complaints with NHTSA since 2015.
While driving under normal conditions at roadway speed, the panoramic sunroof glass suddenly failed with a loud explosive sound. There was no observed impact, no debris strike, and no prior damage to the glass. The failure resulted in a large central blowout with shattered glass and fragments displaced outward from the vehicle.
2024 BMW i5 · Visibility/Wiper · filed with NHTSA May 5, 2026 · ODI 11735810
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 equipment
Source: same model, same component group6 other manufacturer communications filed against these BMW models under the same component group (equipment), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| B610124 | Service bulletin | Jan 6, 2025 | When driving over rough surfaces, a low-frequency rattling noise can be heard inside the vehicle's cabin. The noise typically sounds as tho… |
| B613233 | Service bulletin | Apr 16, 2024 | A small flap of sound insulation material may come into contact with some of the 12 V B+ cables at the remote B+ charging point terminal… |
| B640424 | Service bulletin | Mar 8, 2024 | 1. The center air vent on the left (a) is closed. All other air vents on the left side then only blow cold air intothe passenger area. OR… |
| B660324 | Service bulletin | Feb 22, 2024 | A quality check showed that the Remote-Control Parking token was not activated in the current software for the vehicles affected. |
| B654123 | Service bulletin | Dec 21, 2023 | Quality improvements and robustness measures are to be implemented on the affected vehicles via thissoftware update. The software update im… |
| B120323 | Service bulletin | Jun 1, 2023 | BMW AG has issued a Delivery Stop effective June 6, 2023 on certain Model Year 2023 - 2024 BMW vehicles that were produced between October 2… |
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 B640124 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 B640124 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 B640124 cover?
The manufacturer filed it against 3 model years: 2024 BMW i5, 2024 BMW i7, 2023 BMW i7. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone. The document itself sets the build window: built on or before 31 Dec 2023 — the build date is on the certification label in the driver’s door jamb.