BMW 328I 2014 — technical service bulletin
Bulletin SIB340517 · NHTSA communication 10214954 · issued Jun 1, 2017
Technical service bulletin
communication type
Engine and Engine Cooling
component
2014
model years
1
vehicle entries
Official summary
The engine coolant thermostat component-specific limited warranty extension to 10 years/120,000
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.