SGM: Safety And Gateway Module
WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2006 BMW 530i, 2006 BMW 525i, 2006 BMW 330xi, 2006 BMW 330i, and 2006 BMW 330Ci. However, it is still accessible from the selected car via links, so may be relevant.
> E60, E61, E63, E64
The safety and gateway module (SGM) drives the ECO valve in the power steering pump and the Servotronic valve.
Moreover, the SGM forms the interface between the PT-CAN and the K-CAN (signals for instrument cluster).