may be worth a call to an independant specialist or transmission specialist.
It seems a little strange that the vehicle was able to ID a fault but their PC wont ! Its possible its a broken or shorted wire in the box , that can cause comms issue's. Trouble with dealers is they dont have the experts to repairs those type of compnents ! they are run by accountants who want to see a big fat bottom line so if they can sell you a box at £3000+ then they will.
I'm sure you would fair better spending time phoning round to find a specilist and make sure you do some research as well into both the garage and the problem.
Its long but worth a read !
http://www.audi-gearbox-problems.co.uk/
Edited by injection doc on 09/08/2011 at 18:07
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