BMW 328D 2016–2017 — technical service bulletin
Bulletin B511617 · NHTSA communication 10146640 · issued Apr 1, 2017
Technical service bulletin
communication type
Equipment
component
2016–2017
model years
5
vehicle entries
Official summary
?SERVICE ACTION: SECURE SCR METERING MODULE COVER. The screws retaining the Selective Catalytic Reduction (SCR) metering module cover do not correspond to the applicable standard.
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.