SGM: Safety And Gateway Module (Up To 09/2005)
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 safety and gateway module (SGM) is the data interface between the bus systems that are important for the head-up display:
- Body CAN (K-CAN = body controller-area network)
- Byteflight
- Powertrain CAN (PT-CAN = Powertrain controller-area network)
- Diagnostic wire
The diagnosis wire is connected to the SGM.