The key that came with my 06 lux was the old style one with the soft rubber, which is starting to wear pretty badly, so I bought a replacement off ebay, which is just the shell, metal key and button replacement. I have got the key cut and the remote bit fits in, but the transponder in the original key seems to be glued in, and there is just a hole where it should be on the new one. Has anyone tried to remove the transponder, and if so, how did you go about it and did you succeed?
IMG_20111231_112707 by tomed101, on Flickr