BMW bulletin B840225
What it saysWhen making phone calls via BMW Bluetooth (not Apple CarPlay) in the vehicle, the person in the calloutside the vehicle hears a distorted voice reproduction. NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated May 13, 2025, received May 27, 2025, about the electrical system. It names 13 model years (2024–2025). 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 communicationWhen making phone calls via BMW Bluetooth (not Apple CarPlay) in the vehicle, the person in the calloutside the vehicle hears a distorted voice reproduction.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B840225 | Service bulletin | May 13, 2025 | 11018554 | PDF, 1,513 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 13 model years this bulletin names have filed 239 complaints with NHTSA since 2015. 48 of them name Electrical System — 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 vehicle is a 2025 BMW X7 M60i purchased in New Mexico on . The car's emergency call system and navigation became disabled on after taking the vehicle to a car wash. Subsequently the car was brought to the BMW dealer for repairs; however, the problem recurred after several days, dashboard now showing a traction control warning light.
2025 BMW X7 · Electrical System · filed with NHTSA Apr 3, 2025 · ODI 11652615
I was driving on Single Pedal Drive on a freeway with the 2024 BMW IX, there was a slow down ahead of me. I removed my foot from the pedal and waited for car to slow down, but car didn't slow down enough. Then I slammed the brakes hard, but the brake didn't engage. In fact, brakes were pushed back against my foot.
2024 BMW iX · Electrical System · filed with NHTSA Apr 3, 2025 · ODI 11652449
This submission is a supplemental update to my existing NHTSA complaint regarding my BMW X3. On , at approximately , while the vehicle was traveling approximately 40 MPH with the doors locked, the rear passenger door opened while the vehicle was in motion. A child was secured in a rear car seat at the time.
2024 BMW X3 · Electrical System · filed with NHTSA Jan 7, 2026 · ODI 11709332
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 electrical system
Source: same model, same component group194 other manufacturer communications filed against these BMW models under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the BMW list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 0061610900 | Service campaign | Sep 25, 2026 | The BCP controls several vehicle functions, including the windscreen wipers and air conditioning actuators. Low current flow may cause exces… |
| B611826 | Service bulletin | Sep 17, 2026 | Due to unfavorable software, the Storage Management Electronics (SME) will not show fault codes that trigger the Malfunction Indicator Lamp… |
| B630526 | Service bulletin | Sep 8, 2026 | After programming the vehicle via ISTA/RSUto I-level …26-03-5xx, customer may reportsome of the interior ambient lighting strips(arrows) may… |
| B610625 | Service bulletin | Aug 31, 2026 | Check Control message: "You can continue driving. Drivetrain” (00029) is displayed. The following fault code is stored in the CCU fault memo… |
| 0061890900 | Service campaign | Aug 27, 2026 | In vehicles equipped with the Roof Function Center “FZD‑21” variant, a quiescent‑current violation mayoccur if the system fails to enter sle… |
| 0061880900 | Service campaign | Aug 27, 2026 | In vehicles equipped with the Roof Function Center “FZD‑21” variant, a quiescent‑current violation mayoccur if the system fails to enter sle… |
| 0034040300 | Service campaign | Aug 20, 2026 | After replacement of the Integrated Braking system (IB)/Power Brake the total distance covered might be lower than when handed over to the w… |
| 0064460200 | Service campaign | Aug 12, 2026 | A faulty electric auxiliary heater may have been installed in the certain vehicles. This could result in the failure of the electric auxilia… |
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 B840225 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 B840225 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 B840225 cover?
The manufacturer filed it against 13 model years: 2025 BMW 2 Series, 2024 BMW 3 Series, 2024 BMW 4 Series, 2024 BMW 7 Series, 2024 BMW X1, 2024 BMW X2 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.