BMW bulletin B840424
What it saysCustomers may report issue with Personal eSIM operation, to include: Personal eSIM does not finish the set-up process in the vehicle Telephone function via eSIM is not possible WiFi Hotspot function cannot be used… NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated Dec 6, 2024, received Jan 1, 2025, about the electrical system. It names 9 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 communicationCustomers may report issue with Personal eSIM operation, to include: Personal eSIM does not finish the set-up process in the vehicle Telephone function via eSIM is not possible WiFi Hotspot function cannot be used Streaming video service via the BMW Theatre Screen is not possible
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B840424 | Service bulletin | Dec 6, 2024 | 11012103 | not found |
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 9 model years this bulletin names have filed 269 complaints with NHTSA since 2015. 41 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.
Booked the appointment with BMW of Portland for November, 10,2025 For 9 o'clock AM. Arrived at dealership, checked in and left vehicle. I was called about 45 minutes later and informed that they would not be able to preform the recall repair on my car due to parts that were needed and associated with the recall , asked me to pay for it…
2024 BMW 5 Series · Electrical System · filed with NHTSA Nov 10, 2025 · ODI 11698655
The air condition is inadequate for temperatures above 80°. Due to the inadequacy of the coldness and the speed at which the fan blows, all passengers in a fully loaded vehicle complain of excessive heat temperatures Safety is an issue if left in the vehicle for a long period of time without proper temperatures being reached for all in…
2024 BMW X7 · Electrical System · filed with NHTSA Aug 22, 2024 · ODI 11610316
6 weeks after purchasing the car, the 'check engine' light came on. The dealer evaluated the car (although it took nearly 2 weeks to simply diagnose the issue) and found that the 'high voltage battery control module' was bad and needed replacement. Then, I waited 2 more weeks for the part to be shipped from Germany.
2024 BMW X5 · Electrical System · filed with NHTSA Mar 19, 2024 · ODI 11578230
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 group144 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 |
|---|---|---|---|
| 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… |
| 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… |
| B652026 | Service bulletin | Jul 23, 2026 | The Central Information Display (CID) side of the Multifunction Display (MFD) may flicker intermittently. Theflickering manifests itself in… |
| 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… |
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 B840424 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 B840424 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 B840424 cover?
The manufacturer filed it against 9 model years: 2024 BMW 2 Series, 2024 BMW 3 Series, 2024 BMW 4 Series, 2024 BMW 5 Series, 2024 BMW 7 Series, 2024 BMW X5 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.