Hi Mark, turns out one of the car I did over the week-end is having the same issue as you.
When we plug in the ipod it does not show up on the idrive, even the music.
While this ipod is normally installed in another e60 with Dension/AVR where it works fine, so the ipod itself is fine.

I changed the ipod plug, avr, same issue.

If the AVR was actually faulty, as in, not powered up, the iDrive would not actually work at all. Screen even would stay black.

I have sent an email to Dension yesterday, I hope to get an answer by tomorrow.

Here is a MAN file from a car with the original TV tuner (6 series) with CCC as yourself.

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