BMW bulletin B310122
BMW filed this with NHTSA as a service bulletin dated Jan 3, 2026, received Jun 21, 2022, about the suspension — 4 documents under this number. It names 47 model years (2017–2024). 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.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationDuring inspection and/or diagnosis there is noticeable dirt/grease buildup on the axles near the inner and/or outer CV boots.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B310122 | Service bulletin | Jan 3, 2026 | 11027761 | not yet checked |
| B310122 | Service bulletin | Sep 24, 2024 | 11008106 | not yet checked |
| B310122 | Service bulletin | Mar 14, 2024 | 10252033 | not yet checked |
| B310122 | Service bulletin | Feb 1, 2022 | 10214258 | 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 themand 6 more model years on this site.
Also filed against model years this site has no page for: 2021 BMW XB7.
A 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 B310122 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 B310122 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 B310122 cover?
The manufacturer filed it against 47 model years: 2022 BMW 2 Series, 2024 BMW X1, 2023 BMW X1, 2022 BMW X1, 2024 BMW X2, 2023 BMW X2 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.