BMW 328D 2014–2017 — technical service bulletin
Bulletin B011918 · NHTSA communication 10153683 · issued Dec 1, 2018
Technical service bulletin
communication type
Engine
component
2014–2017
model years
8
vehicle entries
Official summary
N47t/n57t nitrogen oxide sensor (nox) before and after the scr: limited warranty extension to 10 years/120.
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.