MMI Infotainment System, Through 6 November 2008

MMI Infotainment System, Through 6 November 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 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 "Guided Fault Finding" using Vehicle Diagnosis, Testing and Information System (VAS5051B).

Additional information, refer to Self Study Program no. 286; New Data Bus Systems - LIN, MOST Bluetooth.

The MMI Infotainment system is available in the following equipment levels:

MMI

• Front Information Display Control Head Control Module (J523) behind glove compartment

• Multimedia System Control Head (E380) in 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 (rear right)

• Satellite Radio (R146)Satellite Digital Audio Radio Service (SDARS) in the back of the luggage compartment on the right side.

• The Ter connection on the Radio, Telephone And Navigation System Antenna (R52) was deleted beginning November 2006.

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

• Sound systems: basic/Standard/BOSE/Bang and Olufsen

• Media player in position 1 (R118) with CD changer (R41)/CD player (R89) in the front of the center console

• Media player in position 2 (R119) (External Audio Source Connection (R199)) under the center armrest

• Navigation System with CD Drive Control Module (J401) located in luggage compartment beneath the flap (right)

• Mobile phone prep

• Multifunction steering wheel

Notes on MOST Bus

In addition to the CAN bus systems, the optical data bus system MOST bus is used.

A fiber optic cable is utilized as the 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).

Observe the minimum bending radius of 25 mm when routing fiber optic cables. Fiber optic cables must not be pinched or bent.