BMW service campaign B640724
BMW filed this with NHTSA as a service campaign dated May 24, 2024, received May 29, 2024, about the engine. It names 2 model years (2023–2024). A service campaign is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationQuality checks have determined that the coolant changeover valve may develop a coolant leak under ver ylow outside temperatures (significantly lower than 32º F (0 C)).
Document filed under this number
| Document | Kind | Dated | NHTSA id |
|---|---|---|---|
| B640724 | Service campaign | May 24, 2024 | 11000514 |
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 B640724 a recall?
No. A service campaign 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 B640724 repair free?
A service campaign is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does B640724 cover?
The manufacturer filed it against 2 model years: 2024 BMW iX, 2023 BMW iX. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.