BMW 740I 2018–2020 — warranty extension
Bulletin B010121 · NHTSA communication 11010768 · issued Nov 14, 2024
Warranty extension
communication type
Engine
component
2018–2020
model years
14
vehicle entries
Official summary
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.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.