rotor turned really hot on driver front side.

YES THANK YOU FOR THE REPLY.AAA CAR CARE CENTER TOLD ME WHEN I TOOK IT IN THAT WHAT HAD HAPPENED IS THE ABS UNIT THE SUPPLIED THE FLUID TO THE BRAKES AREA HAD GONE BAD SAID IT LOOK LIKE A OCTOPUS AND I CALLED AUDI GOT THE PART NUMBER 4D0614111B AND ITS CALL AN ABS UNIT.tHIS PIECE IS ALSO DISCONTINUED AND WENT OFF MARKET THEY SAID LAST YEAR JAN 2013 IS NO LONGER AVAILABLE.AAA CENTER FOUND ONE AT A FORIEGN SALVAGE YARD BUT SAID THEY WANTED 500 DOLLARS FOR IT AND THEY WOULD CHARGE ME 205 TO PUT IT ON AND THEY SAID THEY ALSO WOULD PUT ALL BRAKES AND ROTORS BECAUSE THE CAR NEEDED IT AND THE TOTAL WOULD BE 1400 DOLLARS. I PRICED BRAKES AND ROTORS ALLWAYS AROUND WHICH ONLY COST 189 DOLLARS AT PART STORE WHICH MY UNCLE WILL PUT ON FOR FREE,BUT THIS PEICE IS THE PROBLEM....WHERE CAN I POSSIBLY FIND IT PLEASE CAN YOU OFFER SOME ADVICE THIS IS SCARY I HOPE IM NOT STUCK...HELP PLEASE THANKS