BMW bulletin B640320
BMW filed this with NHTSA as a service bulletin dated May 4, 2026, received Oct 19, 2020, about the structure — 2 documents under this number. It names 21 model years (2019–2026). 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 communicationCENTER CONSOLE / CUP HOLDER GETS HOT WHEN THE HEAT IS ON: The center console and front cup holder get noticeably too warm to the touch on long journeys with the interior "Heating on". The air ducts may not be properly connected, this allows heated air to leak out in this area. The foam material that seals between the ducts may be out of position, not held by the mounting adhesive and squashed allowing for an air leak.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B640320 | Service bulletin | May 4, 2026 | 11032741 | not yet checked |
| B640320 | Service bulletin | Sep 1, 2020 | 10181233 | 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 BMW B640320 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 B640320 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 B640320 cover?
The manufacturer filed it against 21 model years: 2025 BMW X5, 2024 BMW X5, 2023 BMW X5, 2022 BMW X5, 2021 BMW X5, 2020 BMW X5 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.