BMW bulletin B340625
What it saysBrake “groaning” noises heard at the rear axle at slow speeds, i.e. close to standstill, stop and go driving;when parking or maneuvering. NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated May 2, 2025, received May 21, 2025, about the service brakes. It names 5 model years (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 communicationBrake “groaning” noises heard at the rear axle at slow speeds, i.e. close to standstill, stop and go driving;when parking or maneuvering.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B340625 | Service bulletin | May 2, 2025 | 11018518 | PDF, 130 KB |
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 5 model years this bulletin names have filed 201 complaints with NHTSA since 2015. 101 of them name Service Brakes — 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.
The Integrated Brake system is not working properly. Received a recall notice in April 2024 and it is now 3 months later and it is still not fixed. Visited the BMW dealership and discussed the matter with them and they offered no information as to when it would be fixed. We just have to wait until they notify us.
2024 BMW X5 · Service Brakes · filed with NHTSA Jul 15, 2024 · ODI 11602353
Component or System: Integrated Brake System Description of the Issue: The issue with the Integrated Brake System on my vehicle (VIN: ) was fully resolved by BMW of Fort Lauderdale on January 13, 2025. All repairs were completed, including replacement of necessary components, as indicated in the attached invoice.
2024 BMW X6 · Service Brakes · filed with NHTSA Jan 14, 2025 · ODI 11635777
As I was pulling into a parking stall at work, I pressed on the brake and the vehicle did not stop. It went up over the sidewalk which is stepped up from the parking lot 4-6". i continued to press the break in as far as I could and the vehicle continued to travel at least 20 and stopped when it hit the building.
2024 BMW X3 · Service Brakes · filed with NHTSA Jan 27, 2025 · ODI 11638763
In depth: 2024 BMW X5 brake problems →
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 service brakes
Source: same model, same component group11 other manufacturer communications filed against these BMW models under the same component group (service brakes), newest first. The eight newest are listed; the rest are on the BMW list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 0034460300 | Service campaign | Oct 13, 2026 | The Integrated Brake (IB) power supply cable is covered with mesh protection and contact with the brakeline causes wear on the protective co… |
| B340925 | Service bulletin | Dec 17, 2025 | There may be an internal leakage in the brake fluid expansion tank (aka brake fluid reservoir). In the rarecase of a leak, the filling level… |
| B064725 | Other | Sep 9, 2025 | Protection Plate Return |
| 0034200300 | Service campaign | Jul 30, 2025 | There may be an internal leakage in the brake fluid expansion tank (aka brake fluid reservoir). In the rare case of a leak, the filling leve… |
| B341025 | Service bulletin | Jul 14, 2025 | After programming from the I-Levels between …24-03-505 and lower than …24-03-540 to I-Level …24-11-530 or higher, the following CCM may be d… |
| B661719 | Service bulletin | Apr 30, 2025 | ACTIVE PARK DISTANCE CONTROL (PDC): UNDESIRED BRAKING. This Service Information Bulletin (Revision 1) replaces SI B66 17 19 dated August 201… |
| B340425DS | Service campaign | Apr 9, 2025 | Delivery Stop: Front Brake Disc |
| B340921 | Service bulletin | Jan 14, 2025 | A turbine-like noise can be heard from the rear axle while deceleration during the first 300 miles of operation when braking from low speed. |
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 B340625 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 B340625 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 B340625 cover?
The manufacturer filed it against 5 model years: 2024 BMW M, 2024 BMW X3, 2024 BMW X4, 2024 BMW X5, 2024 BMW X6. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.