BMW bulletin B511723
What it saysWhile driving at highway speeds, wind noise can be heard from the exterior mirror assembly. NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated Feb 16, 2024, received Dec 6, 2023, about the structure — 2 documents under this number. It names 3 model years (2022–2024). 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.
While driving at highway speeds, wind noise can be heard from the exterior mirror assembly. In some cases, this can be also felt in the B-pillar area.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B511723 | Service bulletin | Feb 16, 2024 | 10250371 | PDF, 795 KB |
| B511723 | Service bulletin | Nov 28, 2023 | 10246224 | PDF, 883 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 51 33 9 447 503 | Channel cover, exterior door, front left (Chrome) | 1 | eBay Motors → |
| 51 33 9 447 504 | Channel cover, exterior door, front right (Chrome) | 1 | eBay Motors → |
| 51 33 9 447 505 | Channel cover, exterior door, front left (Black) | 1 | eBay Motors → |
| 51 33 9 447 506 | Channel cover, exterior door, front right (Black) | 1 | eBay Motors → |
| 51 33 9 447 535 | Seal mirror triangle outer left | 1 | eBay Motors → |
| 51 33 9 447 536 | Seal mirror triangle outer right | 1 | eBay Motors → |
Read by machine from the document NHTSA serves (8 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 3 model years this bulletin names have filed 36 complaints with NHTSA since 2015.
The panoramic glass roof panel on this 2023 BMW 7 Series (G70 chassis) has suffered a severe structural perimeter material failure. A flush hairline stress fracture spontaneously appeared along the outer edge completely underneath the rubber weather-stripping track with zero road or debris impacts.
2023 BMW 7 Series · Structure · filed with NHTSA Sep 29, 2026 · ODI 11767834
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 structure
Source: same model, same component group11 other manufacturer communications filed against the BMW 7 Series under the same component group (structure), newest first. The eight newest are listed; the rest are on the BMW list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| B511125 | Service bulletin | Sep 21, 2026 | When pulling on the hood (highlighted inorange in the top photo) release lever… |
| B064226 | Other | Aug 19, 2026 | Bonnet Release Holder |
| B510324 | Service bulletin | Aug 20, 2025 | While opening any of the doors, a groaning sound is heard from the door brake. Doors open and close stiffly. |
| B410424 | Service bulletin | Aug 20, 2025 | A groaning sound from the front of the vehicle while driving can be heard, particularly while cornering. The groaning sound can be heard in… |
| B660325 | Service bulletin | Jul 14, 2025 | A check control message is displayed, indicating that the parking assistance systems have limitedfunctionality due to errors detected within… |
| B510425A | Other | Feb 22, 2025 | BMW Service Action - Tailgate Lock B51 04 25 |
| 0051170600 | Service campaign | Feb 7, 2025 | Due to changes in the opening mechanism ofthe trunk/tailgate latch, it is possible that thetrunk/tailgate may not completely lock afterclosi… |
| B514616 | Service bulletin | Feb 3, 2025 | CREAKING NOISE FROM TAILGATE LOCK.. During opening and closing of the tailgate, a creaking noise can be heard from the tailgate lock. Excess… |
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 B511723 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 B511723 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 B511723 cover?
The manufacturer filed it against 3 model years: 2024 BMW 7 Series, 2023 BMW 7 Series, 2022 BMW 7 Series. 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: G70 7 Series Sedan: built 1 Jun 2022 – 30 Sep 2023 — the build date is on the certification label in the driver’s door jamb.