WenmarOpen by Wenmar Pro

Service bulletin B180116

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10151084
Published by NHTSA2018-12-10
Manufacturer's numberB180116
Manufacturer's date2016-02-01
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR; EQUIPMENT ADAPTIVE/MOBILITY

NHTSA's 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.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Equipment and accessories, Exhaust and emissions, Catalytic converter

Vehicles listed
BMW I32014, 2015, 2016, 2017, 2018

Listing a model year does not mean every vehicle of it is concerned: the document says which.