FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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General Information






Sound Systems

The following systems are offered

Radio (CAN) Sound System Basic Plus

One speaker in the left and right doors

One speaker on the left and right side of the instrument panel

Two speakers in the left and right rear side panel

MMI Sound System Basic

One speaker in the left and right doors

One speaker on the left and right side of the instrument panel

Two speakers in the left and right rear side panel

Radio CAN Sound System Standard

One speaker in the left and right doors

One speaker on the left side, center and right side of the instrument panel

Two speakers in the left and right rear side panel

Subwoofer in rear shelf (R157) in the left rear side trim panel

Digital sound system control module (J525)

MMI Sound System Standard

One speaker in the left and right doors

One speaker on the left side, center and right side of the instrument panel

Two speakers in the left and right rear side panel

Subwoofer in rear shelf in the left rear side trim panel

Radio CAN/MMI Sound System Premium Bang & Olufsen

One speaker in the left and right doors

Per one speaker in the left and right triangular mirror

One speaker on the left side, center and right side of the instrument panel

Two speakers in the left and right rear side panel

Subwoofer in rear shelf in the left rear side trim panel

Digital sound system control module

Notes on MOST Bus

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

The connection to the other data bus systems in the vehicle are provided by the data bus On Board Diagnostic (OBD) interface (J533).

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 contaminated.

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.