TSB B010121 — BMW Warranty extension
B010121 is a warranty extension on file with NHTSA for the BMW X5, 2018–2020 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. For this vehicle, the engine coolant thermostat limited warranty for defects in materials or workmanship has been extended to 15 years/150,000 miles, as determined from the original in-service date.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Worth checking your VIN against. B010121 is filed as a warranty extension, which unlike an ordinary bulletin can mean free or reimbursed work when a vehicle qualifies. Ask a dealer using the document ID below, and check open recalls separately at nhtsa.gov/recalls.
Vehicles and model years B010121 names
Every document filed under B010121
| Document ID | Filed | Type |
|---|---|---|
| B010121 | November 14, 2024 | Warranty extension |
What B010121 covers
Engine — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB B010121?
B010121 is a warranty extension filed with NHTSA by BMW, covering the BMW X5 across the 2018–2020 model years. NHTSA's summary reads: For this vehicle, the engine coolant thermostat limited warranty for defects in materials or workmanship has been extended to 15 years/150,000 miles, as determined from the original in-service date.
Which vehicles does B010121 cover?
NHTSA's file names BMW X5 (2018–2020). 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 B010121 a recall, and is the repair free?
B010121 is filed as a warranty extension, not a recall — but this is the kind of communication that can mean free or reimbursed work if your VIN qualifies. Take the number to a dealer and ask. Recalls are separate and always free; check yours by VIN at nhtsa.gov/recalls.
How do I get the full text of B010121?
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 B010121, 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 B010121. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.