MMI Infotainment System Through 10.31.2008

MMI Infotainment System through 10.31.2008

The data for the infotainment, telephone, navigation, voice control system, audio players, sound system and Data Bus On Board Diagnostic Interface (J533) is transmitted via the fiber optic MOST Bus.

The connection to the other data bus systems in the vehicle is provided by the data bus on board diagnostic interface.

The central control module is the Front Information Display Control Head Control Module (J523). The signals required to display information on the instrument cluster display are transmitted via the MOST Bus to the Front Information Display Control Head Control Module (J533) and from there via the CAN Bus (instrument cluster) to the instrument cluster.

Fault finding is performed via "Guided Fault Finding" using the Vehicle Diagnostic Tester.

MMI

• Front information display control head control module (J523) , behind the instrument panel

• Multimedia control head (E380) in the center console

• Front information display control head (J685) in center of the instrument panel

• Radio (R) (with Speech Input Control Module (J507) ) located in luggage compartment (left rear)

• Satellite radio (R146) in left rear of luggage compartment

• Digital sound system control module (J525) in the luggage compartment (on the left side, in the rear)

• Sound systems: Standard/Bang & Olufsen

• CD changer (R41) inside the Instrument Panel

• External audio source connection (R199) in the glove compartment/center console storage compartment

• Navigation system with CD drive control module (J401) in luggage compartment, left rear

• Cell phone preparation

• Multifunction Steering Wheel

Notes on MOST bus

The optical Data bus "MOST bus" is used in addition to the CAN bus.

A fiber-optic cable is used as a "connecting cable". Fiber optic cables are routed inside corrugated tubes for protection.

Replace complete fiber optic cable if possible.

Make sure that the face surfaces of the connectors do not become soiled.

If the connectors are disconnected: install the protective cap for cable connector (VAS 6223/9).

When installing fiber optic cables, make sure not to go below the minimum bending radius of 25 mm. Do not crush or kink fiber optic cables.