Go back to pages 13 14 15 that kind of area, read the description, 5Q0-713-128-A is the part you need to fix the problem for about £50 and it's pretty straight forward to fix with this part although you may need to get the error code cleared as well.
It's pretty disgusting that this issue isn't a recall on all the VAG models that are blighted with the fault, this will only get bigger and bigger as cars get older I suspect, this is where a brilliant forum such as this comes in handy, I am no expert in these things but I read through the whole thread to the point where the part number and the photos showing the fix are, ordered the part and hey presto problem solved and posted up my thanks to the original member that came up with the solution.
It would seem that the dealers are able to take advantage of a lot of people because they either don't have the time, or know how to search to a fix to this problem, best of luck to you all and thanks to everybody that takes the time to post these helpful fixes for our cars.
Part number 5Q0-713-128-A you can get it from the dealer or auto factors.