Safety And Gateway Module
WARNING: This page is about a different car, the 2005 BMW 645Ci and 2004 BMW 645Ci. However, it is still accessible from the selected car via links, so may be relevant.
The appropriate indicator and warning light is activated to indicate a fault in the passive safety system (airbag).
The SGM is the gateway between the byteflight , PT-CAN and K-CAN data buses . The diagnosis lead is also connected at the SGM.