BMW bulletin B650121
What it saysSPORADIC FAILURE OR CRACKING NOISE IN BASS SPEAKERS: No Bass or a cracking noise can be heard from the bass speakers. NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated Jun 12, 2024, received Mar 15, 2021, about the equipment — 2 documents under this number. It names 67 model years (2016–2024). 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.
Get the next BMW bulletin for your model by email Weekly, only when something new is filed. Nothing else; one-click unsubscribe.
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.
SPORADIC FAILURE OR CRACKING NOISE IN BASS SPEAKERS: No Bass or a cracking noise can be heard from the bass speakers.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B650121 | Service bulletin | Jun 12, 2024 | 11002864 | PDF, 221 KB |
| B650121 | Service bulletin | Feb 1, 2021 | 10188953 | not found |
What the document itself lists
Labour operations and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 65 99 000 | Work time to replace the amplifier/booster (after vehicle diagnosis) (Only if no… | 6 FRU |
| 00 58 000 | Diagnosis Worktime Flat Rate (See below) | 2 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.
Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
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 16 more on this site: 2019 BMW X4, 2024 BMW X5, 2021 BMW X5, 2020 BMW X5, 2019 BMW X5, 2024 BMW X6, 2021 BMW X6, 2020 BMW X6, 2023 BMW X7, 2021 BMW X7, 2020 BMW X7, 2019 BMW X7, 2023 BMW Z4, 2021 BMW Z4, 2020 BMW Z4, 2019 BMW Z4.
Also filed against model years this site has no page for: 2019 BMW 540D; 2020 BMW 540D; 2020 BMW 640I; 2018 BMW B7 Alpina; 2019 BMW B7 Alpina; 2020 BMW B7 Alpina; 2021 BMW B7 Alpina; 2018 BMW C 400 X; 2021 BMW F 850 GS Adventure; 2017 BMW F800 R; 2019 BMW M850XI.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Email me new BMW bulletins for one of these models
A weekly email, sent only in a week when BMW files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
What owners reported
Source: NHTSA complaint databaseOwners of the 56 model years this bulletin names have filed 1,998 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 equipment
Source: same model, same component group29 other manufacturer communications filed against these BMW models under the same component group (equipment), newest first. The eight newest are listed; the rest are on the BMW list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| B010122 | Service bulletin | Jan 21, 2026 | With the court's FINAL approval, BMW of North America, LLC (BMW NA) has entered into a nationwide settlement with the plaintiffs in the foll… |
| B011323 | Service bulletin | Mar 12, 2025 | BMW of North America, LLC (BMW NA) has a nationwide settlement with the plaintiffs in the following class action: Brightk Consulting, Inc.… |
| B610124 | Service bulletin | Jan 6, 2025 | When driving over rough surfaces, a low-frequency rattling noise can be heard inside the vehicle's cabin. The noise typically sounds as tho… |
| B610615 | Service bulletin | Dec 18, 2024 | Washer Fluid Reservoir Rattles While Driving on Rough Roads. Rattling noises heard from vicinity of glove box. The windshield washer reservo… |
| B650421 | Service bulletin | Jun 4, 2024 | RETROFIT SATELLITE RADIO (OPTION CODE SA655): The affected vehicles were produced with Preparation BMW Satellite Radio (option code SA 693)… |
| B511520 | Service bulletin | Mar 21, 2024 | WIND NOISE FROM ENGINE BULKHEAD: A wind noise can be heard when driving at highway speeds from the area around the lower windshield. Imprope… |
| B640424 | Service bulletin | Mar 8, 2024 | 1. The center air vent on the left (a) is closed. All other air vents on the left side then only blow cold air intothe passenger area. OR… |
| B610321 | Service bulletin | Feb 28, 2024 | SITUATION BMW AG is conducting a Voluntary Emissions Recall (effective April 23, 2021) on a certain Model Year 2020 - 2021 BMW vehicles th… |
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 B650121 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 B650121 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 B650121 cover?
The manufacturer filed it against 67 model years: 2023 BMW 2 Series, 2021 BMW 2 Series, 2020 BMW 2 Series, 2023 BMW 3 Series, 2021 BMW 3 Series, 2020 BMW 3 Series 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: built 1 Mar 2020 – 23 Nov 2020 — the build date is on the certification label in the driver’s door jamb.