Nope, no warning lights- Haven't checked for fault codes since I do not possess a Vagcom however I assume that the airbag light would come on if there was anything wrong?
Horn works and wheel hasn't fallen off yet (touch wood) so job's a good'un.
I did manage to shear the Torx bit off in the main bolt but it was as tight as I could get it in any case
Not 100% sure it's centred, although it does vary from side to side so I suspect I'm being paranoid...