MMI Infotainment System, Through 10.2008

MMI Infotainment System, through 10.2008

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 are performed by the Data bus on board diagnostic interface.

The central control module is the Front Information Display Control Head Control Module (J523). The transfer of signals representing the instrument cluster display occurs via the MOST Bus to Data Bus On Board Diagnostic Interface and from there via CAN Bus (instrument cluster) to the instrument cluster.

Fault finding is performed via the Guided Fault Finding function with the Vehicle Diagnostic Tester.

Additional information, refer to Self Study Program No. 286, New Data Bus Systems - LIN, MOST Bluetooth(R).

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) in left rear of luggage compartment

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

• Digital Sound System Control Module (J525) in the luggage compartment (left rear)

• Sound systems: Standard/Bang & Olufsen

• CD changer (R41) in 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

• Mobile phone prep

• 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: Attach 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.

Additional information, refer to Self Study Program No. 286, New Data Bus Systems - LIN, MOST Bluetooth(R).