BMW bulletin B330126
What it saysNoise complaint: Humming or clicking type noise in the speed range of 15 – 65 mph can be heard from the rear axle. NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated Mar 2, 2026, received Feb 23, 2026, about the suspension — 2 documents under this number. It names 4 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.
1. Noise complaint: Humming or clicking type noise in the speed range of 15 – 65 mph can be heard from the rear axle. Seeattached video “V33 01 26 Humming” and “V33 02 26 Clicking” The noise may be amplified depending on road speed. Or 2. Fault memory entry: Customer has Dynamic Stability Control malfunction indicator lamp and/or related Check Control Message. The following fault codes are found in the Integrated Brake module fault memory: 4809B7: Wheel speed sensor - rear left - tooth missing 4809C2: Wheel speed sensor - rear right - tooth missing 480AB4: Wheel speed sensor - rear right – noise monitoring 480AAD: Wheel speed sensor - rear left – noise monitoring
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B330126 | Service bulletin | Mar 2, 2026 | 11030056 | PDF, 139 KB |
| B330126 | Service bulletin | Feb 18, 2026 | 11028922 | PDF, 135 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 31 20 8 882 498 | Wheel hub with bearing | 2 | eBay Motors → |
| 31 10 6 894 168 | Multi-purpose bolt (M12x1.25x33ZNS3) | 8 | eBay Motors → |
| 34 20 6 867 544 | Torx screw with washer (M12x1.5x43 ZNS3) | 4 | eBay Motors → |
| 34 20 6 850 560 | Hex bolt (M8x22) | 4 | eBay Motors → |
| 31 20 6 795 249 | Collar screw with spring | 2 | eBay Motors → |
| 83 12 2 296 187 | Brake pad paste | 1 | eBay Motors → |
Read by machine from the document NHTSA serves (4 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 4 model years this bulletin names have filed 104 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 suspension
Source: same model, same component group3 other manufacturer communications filed against these BMW models under the same component group (suspension), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| B510326 | Service bulletin | Feb 17, 2026 | While driving on rough surfaces, a “creaking” noise can be heard from the B-pillar trim panels. |
| B310126 | Service bulletin | Feb 4, 2026 | When driving over an uneven road surface, a “thumping” noise can be heard from the front axle. Seeattached video V 31 01 26. Under certain w… |
| B310122 | Service bulletin | Jan 3, 2026 | During inspection and/or diagnosis there is noticeable dirt/grease buildup on the axles near the inner and/or outer CV boots. |
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 B330126 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 B330126 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 B330126 cover?
The manufacturer filed it against 4 model years: 2024 BMW X1, 2023 BMW X1, 2024 BMW X2, 2023 BMW X2. 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: U10 X2 Sports Activity Coupe: built Sep 2022 – 3 Apr 2025; U11 X1 Sports Activity Vehicle: built Nov 2023 – 3 Apr 2025 — the build date is on the certification label in the driver’s door jamb.