BMW bulletin B110426
What it saysThe manual starting of electronic engine oil level measurement from inside the vehicle, usually afterperforming an engine oil service task, is inoperative or it may lock up at between a 15% to 30% completionrate. NHTSA’s full summary ↓
BMW filed this with NHTSA as a service bulletin dated Jul 17, 2026, received Aug 3, 2026, about the engine. It names 16 model years (2019–2021). 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.
The manual starting of electronic engine oil level measurement from inside the vehicle, usually afterperforming an engine oil service task, is inoperative or it may lock up at between a 15% to 30% completionrate.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| B110426 | Service bulletin | Jul 17, 2026 | 11035500 | PDF, 511 KB |
What the document itself lists
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 61 00 006 | Carrying out vehicle diagnosis, ABL (Work time) Up to | 2 FRU |
Read by machine from the document NHTSA serves (5 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.
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 16 model years this bulletin names have filed 845 complaints with NHTSA since 2015. 519 of them name Electrical System, Engine — 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.
On the 2019 BMW X5, the 19 owners who gave an odometer reading for Electrical System reported it at a median of 55,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
The contact owns a 2019 BMW X7. The contact stated that while attempting to start the vehicle, the message that the starter motor was overheating was displayed and the vehicle failed to start. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the starter motor. The vehicle was repaired.
2019 BMW X7 · Electrical System · filed with NHTSA May 12, 2025 · ODI 11660474
The contact owns a 2020 BMW 750I. The contact stated that while driving in a parking lot at slow speeds, the check engine warning light illuminated. The vehicle was taken to the local dealer where it was diagnosed that the expansion tank had cracked and leaked on the fuel rail and the injector had failed. The vehicle was repaired.
2020 BMW 7 Series · Engine · filed with NHTSA May 20, 2025 · ODI 11662182
The contact owned a 2020 BMW X3. The contact stated after parking her vehicle at her residence, the vehicle caught fire around the engine independently. The fire department extinguished the fire. A fire and police report were filed. The vehicle was not drivable. The contact stated no one was injured nor sought medical attention.
2020 BMW X3 · Engine · filed with NHTSA Feb 14, 2023 · ODI 11507157
In depth: 2019 BMW X5 electrical problems → · 2019 BMW X5 engine 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 engine
Source: same model, same component group74 other manufacturer communications filed against these BMW models under the same component group (engine), newest first. The eight newest are listed; the rest are on the BMW list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 0011320800 | Service campaign | Oct 21, 2026 | The cylinder head cover was not installed correctly at the assembly plant. |
| 0012870600 | Service campaign | Oct 10, 2026 | Due to an implementation error in various OBD diagnostics in the vehicle's control units, in very rare cases itmay happen that stored fault… |
| 1171901000 | Warranty extension | Sep 22, 2026 | The Exhaust Gas Recirculation (EGR) Cooler (with EGR Valve) and the Auxiliary Exhaust Gas Recirculation (EGR) Cooler limited warranty for de… |
| B121126 | Service bulletin | Sep 9, 2026 | Potential customer complaints with no fault codes stored / No MIL displayed. 1. “Rough idle after idling for a longer period of time” 2. “Ve… |
| 0011460700 | Emissions | Aug 26, 2026 | The return springs on the exhaust camshaft followers (switchable rocker arm) may break. |
| B064426 | Other | Aug 22, 2026 | Air Flap Return |
| B130126 | Service campaign | Aug 14, 2026 | Delivery Stop - Exhaust System Gasket |
| 0018030200 | Service campaign | Aug 14, 2026 | An exhaust gas sealing ring between thelower catalytic converter and upper catalyticconverter may be missing (1). |
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 B110426 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 B110426 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 B110426 cover?
The manufacturer filed it against 16 model years: 2021 BMW 7 Series, 2020 BMW 7 Series, 2021 BMW 8 Series, 2020 BMW 8 Series, 2021 BMW X3, 2020 BMW X3 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: G01 2020 to 2021 X3 M40i: built 16 Aug 2019 – 14 Jan 2021; G02 2020 to 2021 X4 M40i: built 3 Sep 2019 – 14 Jan 2021; G05 2020 to 2021 X5 sDrive40i: built 7 Jul 2019 – 28 Feb 2021 — the build date is on the certification label in the driver’s door jamb.