61 35... Control units, switches, relay
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 BMW 540i, 2002 BMW 540i, 2001 BMW 540i, 2000 BMW 540i, and 1999 BMW 540i. However, it is still accessible from the selected car via links, so may be relevant.
With effect from E38, all schematics, installation locations of electrical components such as control units, switches, relays, connectors, pin allocation of control units and function descriptions for individual systems are described in the Diagnosis Information System (DIS). The procedure describing how to call up each of the components is described in the DIS Handbook under Point 14.5 Documents.