| The following systems are available: |
| Radio (CAN) sound system basic |
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| One loudspeaker in each front door (left and right) |
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| One loudspeaker on each side of dash panel |
| Radio (CAN) sound system basic plus |
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| One loudspeaker in each front door (left and right) |
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| One loudspeaker on each side of dash panel |
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| Two loudspeakers in each rear door (left and right) |
| MMI sound system basic plus (up to week 44/08) |
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| One loudspeaker in each front door (left and right) |
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| One loudspeaker on each side of dash panel |
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| Two loudspeakers in each rear door (left and right) |
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| Digital sound package control unit -J525- |
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| Connection for external audio sources -R199- |
| MMI sound system basic (from week 45/08 onwards) |
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| One loudspeaker in each front door (left and right) |
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| One loudspeaker on each side of dash panel |
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| Two loudspeakers in each rear door (left and right) |
| Radio (CAN)/MMI (up to week 44/08) sound system Standard |
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| One loudspeaker in each front door (left and right) |
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| Three loudspeakers in dash panel (left, centre and right) |
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| Two loudspeakers in each rear door (left and right) |
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| Subwoofer in rear shelf -R157- (saloon) |
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| Subwoofer in rear shelf -R157- in spare wheel well (Avant) |
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| Digital sound package control unit -J525- |
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| Connection for external audio sources -R199- (MMI) |
| MMI sound system Standard (from week 45/08 onwards) |
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| One loudspeaker in each front door (left and right) |
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| Three loudspeakers in dash panel (left, centre and right) |
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| Two loudspeakers in each rear door (left and right) |
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| Subwoofer in rear shelf -R157- (saloon) |
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| Subwoofer in rear shelf -R157- in spare wheel well (Avant) |
| Radio (CAN)/MMI sound system premium (Bang & Olufsen) |
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| One loudspeaker in each front door (left and right) |
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| One loudspeaker in each mirror triangle (left and right) |
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| Three loudspeakers in dash panel (left, centre and right) |
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| Two loudspeakers in each rear door (left and right) |
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| Two loudspeakers on each side of rear shelf (left and right) - saloon |
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| Two loudspeakers in each D-pillar (left and right) - Avant |
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| Subwoofer in rear shelf -R157- (saloon) |
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| Subwoofer in rear shelf -R157- in spare wheel well (Avant) |
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| Digital sound package control unit -J525- |
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| Connection for external audio sources -R199- (up to week 44/08) |
| In addition to the CAN bus, the fibre optic data bus „MOST bus“ is used. |
| The connection to other data bus systems in the vehicle is handled by the data bus diagnostic interface -J533-. |
| A „fibre optic cable“ is used as the connecting cable. The fibre optic cables are fitted in corrugated tubes for protection. |
| Renew the complete fibre optic cable whenever possible. |
| It is important to ensure that the end faces of the connectors do not become dirty. |
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