BMW bulletin B511823
What it saysA groaning noise is heard from the trunk when driving on rough roads. NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated Aug 27, 2024, received Oct 1, 2023, about the structure — 2 documents under this number. It names 11 model years (2020–2024). 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.
A groaning noise is heard from the trunk when driving on rough roads.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B511823 | Service bulletin | Aug 27, 2024 | 11006732 | PDF, 1,305 KB |
| B511823 | Service bulletin | Sep 25, 2023 | 10242880 | PDF, 1,249 KB |
What the document itself lists
Part the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 83 19 2 358 109 | Anti squeak paint Berucoat AK 978 (100 ml) Sublet | — | eBay Motors → |
Labour operations and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 00 58 500 | Diagnosis Worktime Flat Rate | 2 FRU |
| 51 99 000 | Work time to clean and lubricate the trunk lid wedging element using Berucoat AK 978… | 3 FRU |
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.
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.
Find the body for the 2024 4 Series →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.
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 11 model years this bulletin names have filed 138 complaints with NHTSA since 2015. 2 of them name Structure — 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.
Dear National Highway Traffic Safety Administration, I am writing to report a significant safety concern involving my 2022 BMW X4 M40i. The issue pertains to an anti-corroding substance inside the tailgate panel that has been leaking, causing damage to my vehicle's bumper and obstructing the view on my rear camera.
2022 BMW X4 · Structure · filed with NHTSA Aug 12, 2024 · ODI 11608127
BMW SIB 51 33 16 (NHTSA ID 10200233) Manufacturer defect resulting in water slowly backing up into trunk and other parts of car until it completely fills side panels, floor of car, ect. There is no indication this is occurring.
2020 BMW 4 Series · Structure · filed with NHTSA Jun 9, 2026 · ODI 11742959
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 group28 other manufacturer communications filed against these BMW models 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 |
|---|---|---|---|
| 5135900100 | Warranty extension | Sep 3, 2026 | The coverage period for qualifying lower rear side panel water drain repair that addresses the issues described in the Service Information B… |
| B010226DCS | Other | Aug 28, 2026 | BMW Notice of the Court’s Final Approval for Shark-Fin Antenna Settlement (X3, X4, X5, X6, X7) |
| B010226 | Service bulletin | Aug 25, 2026 | Rear Roof Antenna Shark Fin Cover Sealing Issue |
| B640626 | Service bulletin | Jul 24, 2026 | A “whistling” noise is heard from the centerconsole/instrument panel when using theheating and air conditioning (HVAC) system. Heard with th… |
| 6520900300 | Warranty extension | May 21, 2026 | SHARK FIN ROOF ANTENNA SEALING SETTLEMENT Extended Warranty |
| B641224 | Service bulletin | May 4, 2026 | 1. Use of aftermarket accessory hang-on cellular phone holders and/or air fresheners can break the instrument panel air vent slats. Damage a… |
| B510626 | Service bulletin | Apr 23, 2026 | While driving on rough surfaces, a “tapping” noise can be heard from the tailgate area |
| B512224 | Service bulletin | Mar 18, 2026 | On the main door seal, detachment behaviorcan be detected at the sealing joint . Over time, the seal gradually and increasinglydetaches whic… |
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 B511823 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 B511823 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 B511823 cover?
The manufacturer filed it against 11 model years: 2024 BMW 4 Series, 2023 BMW 4 Series, 2022 BMW 4 Series, 2021 BMW 4 Series, 2020 BMW 4 Series, 2023 BMW X4 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 on or before 20 Jan 2023; built after 21 Jan 2023 — the build date is on the certification label in the driver’s door jamb.