Hi I have a key which has suddenly stopped unlocking / locking the car by remote - putting the key in the lock works fine, and car starts without issue. Second key still functions remotely I have tried all sorts of things (push unlock while other key is in ignition etc etc) all with no luck. I have VCDS but dont have the nerve to do the adaption on Cent Conv - as im afarid the keys will stop working all together. Can anyone help? thanks (Car is 2007 Octy Elegance Estate 1.9)