BMW i3 2014–2018 — technical service bulletin
Bulletin B180116 · NHTSA communication 10151084 · issued Feb 1, 2016
Technical service bulletin
communication type
Engine and Engine Cooling
component
2014–2018
model years
5
vehicle entries
Official summary
SUBJECT Correct Installation of W20 Catalytic Converter. Metallic noise from rear of vehicle equipped with a range extender. Improperly installed decoupling element allows contact with the heat shield. This may have been the result of a missing or obscured blue mark on the rear silencer support which is meant to indicate how far to push the decoupling element onto the support. This issue is not present from the factory, and is only introduced after previous repairs.
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.