Sorry to revive an old thread but if antone's interested, I fitted a mobridge unit to my D3 when I bought an iphone - provides a cable for charging (still need to route that into the armrest) which also allows you to use it through the MMI as another CD changer. Phone is through bluetooth - just need to run a new MIC cable up to the mirror area - 10 minute job. The mobridge unit replaces the built in 'phone module under the seat - no codng required.
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2005 A8L W12 Almond Beige
2008 Jaguar XK Convertible
1971 Jensen Interceptor II (soon to be Mendip Blue)