Just to report, with these instructions, I successfully installed the latest OEM bluetooth into the wife's GTi. A huge thank you as I would not have attempted it without. One suggestion I'd make is, when trying to pass the mic cable from the fuse panel area to the back of the audio unit I used a coat hanger. I threaded the hanger through from the audio hole and taped the phone cable to it, then pulled it through. Took seconds and no scratched arms
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A couple of questions, if anyone knows the answers. Firstly, I can't get the MFSW controls working. Do I need an extra cable or is it a VCDS coding issue? Second point is that I did not need to use VCDS to get bluetooth working, albeit the MFSW is not working the phone. I followed the coding instructuons provded here, but when I got to the part where I should have ticked the box, I had a completely different set of information on screen and nothing at all about bluetooth, phone, audio etc. Is this because it's the OEM bluetooth instead of Fiscon? Or is it because I've got the RCD 510 and not the RNS?
Any help, much appreciated.
Edit: Now got the MFSW working okay, but have some errors still reported by VCDS, relating to audio, radio and telephone respectively. Does not seem to affect anything though??