BMW bulletin B510923
What it saysSudden failure of the power window(s). NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated Aug 19, 2024, received Jun 26, 2023, about the visibility/wiper — 2 documents under this number. It names 13 model years (2020–2023). 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 communicationSudden failure of the power window(s).
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B510923 | Service bulletin | Aug 19, 2024 | 11006730 | PDF, 123 KB |
| B510923 | Service bulletin | May 1, 2023 | 10238078 | not found |
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.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
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Model years it names
Source: as the manufacturer filed themAlso filed against model years this site has no page for: 2023 BMW M4 GT4.
A 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 12 model years this bulletin names have filed 150 complaints with NHTSA since 2015. 3 of them name Visibility/Wiper — 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.
I purchased a new 2020 Bmw 230I in may 2020. Its first and only servicing was on 12/9/20 for a 10,000 mile oil change and "multi-point inspection," in which one of the inspection items was "inspect sunroof operation and check for leaks." 12/11/20 I was driving to my office northbound on estrella blvd when at approximately 8:53 AM, I…
2020 BMW 2 Series · Visibility/Wiper · filed with NHTSA Dec 21, 2020 · ODI 11384470
The contact owns a 2021 BMW 228I. The contact stated while driving 70-75 MPH, the sunroof exploded. The contact stated that the shade guard was closed at the time the failure occurred. The contact veered to the side of the road. The contact stated that he inspected the vehicle but could not determine the cause of the failure.
2021 BMW 2 Series · Visibility/Wiper · filed with NHTSA Jul 20, 2023 · ODI 11533458
Company is selling reflector inserts that are not legal. The removal of safety device(s) is suspect at this time. The part removes the reflective safety feature and replaces with a dull black insert preventing reflection of said vehicle rendering a possible safety hazard. I do not use the product.
2022 BMW M · Visibility/Wiper · filed with NHTSA Sep 29, 2022 · ODI 11487053
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 visibility/wiper
Source: same model, same component group9 other manufacturer communications filed against these BMW models under the same component group (visibility/wiper), newest first. The eight newest are listed; the rest are on the BMW list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| B064026 | Other | Jul 17, 2026 | Mirror Glass Return |
| B610526 | Service bulletin | Mar 20, 2026 | Customers might report that washer fluid is leaking from the lower reservoir area, especially around thewasher fluid pumps. |
| B511924 | Service bulletin | Jan 22, 2026 | There is a matte “veil” or milky stain on theexterior mirror glass. Passenger side mirror shown; situation canoccur on either or both exteri… |
| B063225 | Other | May 21, 2025 | Inspection and Return - Linkage for Wiper System |
| B630222 | Service bulletin | Apr 25, 2025 | Excessive condensation in one or both headlights. |
| B640422 | Service bulletin | Feb 16, 2024 | An interference noise (groaning noise) can be heard from within the heating and air-conditioning unit in thecenter of the instrument panel.… |
| B540521 | Service bulletin | Aug 1, 2023 | The sunroof will not operate in either direction. There are NO faults stored related to the sunroof. If the vehicle has any faults stored re… |
| B640821 | Service bulletin | Jun 1, 2023 | The air conditioning cycles from cold to warm air while driving or while at a stand still. The vent outlet temperatures vary by 25 degrees F… |
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 B510923 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 B510923 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 B510923 cover?
The manufacturer filed it against 13 model years: 2023 BMW 2 Series, 2022 BMW 2 Series, 2021 BMW 2 Series, 2020 BMW 2 Series, 2023 BMW 4 Series, 2022 BMW 4 Series and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.