All good Don, appreciate the responses.
At this point everything is working as far as I know, so I'll have to leave well alone.
But I'll hopefully get another look at the system to check out a few more things (like radio station image tags etc) so will check those bytes and get a some details over to Ross-tech to help get some more of a library built up on these beasts.
Was my first encounter with an MQB platform in any guise...

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