hey all, popped into a local key cutting place yesterday because my central locking fob was getting low now the fob doesnt work? when i changed the batterys it was a right struggle sliding the cover off so i think i may have damaged something, i must have done it wrong....t sliding just the one flap off??? since then ive tryed various methods of recoding the frequency and nothing is working. ive followed all the steps on ross-tech to the word on recoding the key still no joy! so ive tryed all the put it in the door lock unlock push buttons while my non central locking spare was in the ignition. ive wiped the keys on rosstech by saving 00 in adaptation, then entered the 21 , changed the amount of keys to 1, then save and hold the unlock on the key dont get any horn beep or light flash and the key still doesnt work... enter 21 in adaptation again and it says no keys registered if you know what i mean... getting the feeling ive broke something, or is there anything else to try?? i only have one fob that works in the ignition only, one metal spare that works, and the plastic master... thought maybe the new batterys could be flat, i left the old ones at timpsons like a div!!! any help her much appreciated people... how much is a new key from audi?