Well, there's no news as yet.. but i suspect a bit fat failure, as i was warned on here.
When i spoke to the dealer about what i wanted to do, they assured me it was possible and that they had done it before on other vehicles, this boosted my confidence, so i went ahead. I took it in a couple of weeks ago, had a call during the day saying all was going well, it'll be ready to be picked up at 5. I turn up at 5, to be told they hit a 'snag' with the navigation, but everything else is working. The master tech needs to continue working on it, but he's off next week, we'll call you to book it back in.
Turns out 'everything else is working' means - no reversing camera - no appconnect - no CarNet - no balance/fade. They call me back 10 days later and ask if they can have it for two days, of which coincidentally, today is the second day. I hear nothing, at 5pm on the 2nd day i call and ask what's happening. And no word of a lie i hear this.. "well, we're not actually supposed to do this, we can't tell VW what we're doing or they wont help us. We did this last year and it didn't work, and we got a right bollocking from VW for it"
Well, that's a slightly different story than when i originally asked about having it fitted. They've asked for it back for another two days, as the Master Tech has said that if he swaps it out on another van with the same model unit, then codes it on that, and then puts it back into our van, it'll work. Which, oddly enough, is exactly what i was told they needed it for 2 days this time. I can't leave it any longer, the wife needs it tomorrow, so i'm picking it up in the morning. Oh, and even if it had worked, CarNet would never have been able to be used on it, as the Van needs to ship from the factory with a CarNet enabled unit to be able to register it.. took 3 phone calls with VW to get that answer.
Lesson learnt, i should have listened to you guys. I'm going to tell them to put the original unit back in for now, and thankfully i'm covered by eBay to refund the unusable unit. If VW try and charge me anything for the privilege or leaving me without vehicle for several days, to have me back where i started, i shall be politely telling them where to go.. I'll look into the Pioneer or Kenwood units that have been recommended on other threads, i just need to find those threads! If anyone knows the models off hand, please let me know.
Cheers All.