WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.
0491152 127011 Adapter MW
NOTE:
(EML adapter) For checking the electronic engine power control safety circuit with a 20-pin engine connector [Discontinued]