BMW bulletin B320325
What it saysCustomer states that the steering wheel heating is inoperative. NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated Mar 10, 2025, received Mar 11, 2025, about the electrical system. It names 2 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 communicationCustomer states that the steering wheel heating is inoperative. Fault code “30490 Missing LIN slave” is stored in Body Domain Controller.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B320325 | Service bulletin | Mar 10, 2025 | 11015552 | PDF, 1,099 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 2 model years this bulletin names have filed 45 complaints with NHTSA since 2015. 13 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.
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 group51 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… |
| 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… |
| 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… |
| B651926 | Service bulletin | Jul 15, 2026 | Activation of the BMW Intelligent Personal Assistant voice is not possible via the Multifunction Steering Wheel (MFL) button and/or via the… |
| B840226 | Service campaign | Jul 10, 2026 | Once the Telematics Module (TCB2) enters sleep mode, a BMW Data Services trigger for Remote Services… |
| B651826 | Service bulletin | Jun 23, 2026 | If BMW Intelligent Personal Assistant is active in the vehicle, once the customer exits the vehicle and a newkey cycle starts, the Intellige… |
| B651726 | Service bulletin | Jun 17, 2026 | After a factory reset of the head unit, the navigation voice input cannot be activated or deactivated. |
| B651226 | Service bulletin | Jun 13, 2026 | After updating the vehicle to I-level …25-07-5XX, the spoken language of the navigation instructions changes from the set language for the v… |
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 B320325 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 B320325 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 B320325 cover?
The manufacturer filed it against 2 model years: 2024 BMW X3, 2024 BMW X4. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.