TSB B110426 — BMW Service bulletin
B110426 is a service bulletin on file with NHTSA for 2 BMW models, 2019–2021 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. 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.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years B110426 names
Every document filed under B110426
| Document ID | Filed | Type |
|---|---|---|
| B110426 | July 17, 2026 | Service bulletin |
What B110426 covers
Engine, Electrical — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB B110426?
B110426 is a service bulletin filed with NHTSA by BMW, covering 2 BMW models across the 2019–2021 model years. NHTSA's summary reads: 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.
Which vehicles does B110426 cover?
NHTSA's file names BMW X3 (2020–2021); BMW X5 (2019–2021). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB B110426 a recall, and is the repair free?
No. B110426 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of B110426?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under B110426, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under B110426. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.