Bus Systems: Gateways: Introduction

A gateway (GW) is an interface. It connects different bus systems within the vehicle's electrical system. It provides a means of ensuring the exchange of information in spite of differences in the rates of data transmission on the individual bus systems. Diagnostic access to the individual control units from a central point is made possible by the gateway.

The gateway modules used in the E65 are the Car Access System (CAS), Control Display (MCGW-MOST/CAN gateway) and the Central Gateway Module (ZGM).