BMW bulletin B652724
What it saysA check control message (CCM) for the restraint system (Air bag) appears. NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated May 19, 2026, received Oct 19, 2024, about the air bags — 3 documents under this number. It names 18 model years (2020–2025). 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 check control message (CCM) for the restraint system (Air bag) appears. In the instrument cluster, the red air bag warning light lights up permanently. One of the following fault codes is stored in the ACSM (air bag control unit): 930949 - Knee airbag, driver: Short circuit to negative terminal 93094F - Knee airbag, front passenger: Short circuit to negative terminal 93094C - Knee airbag driver's side: Resistance too great 930952 - Knee airbag, front passenger: Resistance too great
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B652724 | Service bulletin | May 19, 2026 | 11033033 | PDF, 1,681 KB |
| B652724 | Service bulletin | Nov 25, 2025 | 11025835 | PDF, 1,755 KB |
| B652724 | Service bulletin | Oct 17, 2024 | 11009002 | PDF, 1,930 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 61 13 6 925 452 | tape | — | eBay Motors → |
| 54 34 7 248 700 | number | — | eBay Motors → |
Labour operations and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 00 58 500 | Diagnosis Worktime Flat Rate (See below) | 2 FRU |
| 00 72 587 | Install repair cable of left or right knee airbag (Associated work, after vehicle… | 4 FRU |
Read by machine from the document NHTSA serves (5 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.
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 18 model years this bulletin names have filed 833 complaints with NHTSA since 2015. 13 of them name Air Bags — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
The contact owns a 2021 BMW X5. The contact stated while his wife was reversing the vehicle into the main road when shifting gears into drive, the vehicle began to reverse independently while still depressing on the brake pedal. The contact stated the vehicle ran into two different trees and slashed the front driver's side tire.
2021 BMW X5 · Air Bags · filed with NHTSA Jan 21, 2022 · ODI 11448346
Rear restraint system malfunction. BMW states it’s a faulty airbag that is not under warranty. Car has never been in an accident and only 4 years old so there should not have been any issues. It is a safety issue for passengers
2020 BMW X5 · Air Bags · filed with NHTSA Oct 23, 2023 · ODI 11551427
Wiring from knee air bag to module failed. Had to repair wiring from front driver and passenger knee air bags. Wiring had a short to ground. Resulted in a $1600 bill
2021 BMW X6 · Air Bags · filed with NHTSA Nov 25, 2025 · ODI 11701406
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 air bags
Source: same model, same component group3 other manufacturer communications filed against these BMW models under the same component group (air bags), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 6112900300 | Warranty extension | Jan 6, 2025 | The limited warranty for the Knee Air Bag wire harness repair cable procedure for defects in materials and / or workmanship has been extende… |
| B650222 | Service bulletin | Aug 1, 2023 | A check control message for the restraint system appears. In the instrument cluster, the red air bag warning light lights up permanently. On… |
| B650414 | Service bulletin | Oct 1, 2022 | "AIRBAG WARNING LIGHT: ACSM FC 930A60 OR 930A1C SEAT OCCUPANCY DETECTION. According to the customer, the airbag warning light was on, but it… |
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 B652724 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 B652724 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 B652724 cover?
The manufacturer filed it against 18 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. The document itself sets the build window: Vehicle (SAV): built 23 Mar 2020 – Apr 2023; Coupe (SAC): built 28 Mar 2020 – Apr 2023; xDrive40i SAV: built 28 Mar 2020 – Apr 2023 — the build date is on the certification label in the driver’s door jamb.