This post has been compiled from the misc posts on here (mostly by Mr. cheesewire) and the tons of good info is in this PDF (I presume from the Bentley manual?) - http://volkswagen.msk.ru/index.php?p=page18_cr but please note it's for the North American-spec AAA engines, not the rest-of-world ABV engines.   Hopefully it's definitive, but if it's not let me know and I'll amend it :)   So, first up: I believe that only early VRs have a 2-stage fan setup. Possibly all and certainly all l