Hi, ive been trying the same thing on my toledo. I didnt have a remote key at all but have now managed to get a old style key matched to the car which has the same code as yours (5fa 007 680)
I have a 3 button 434 mhz filp key: 1K0 959753 G which, no matter how I try, does not work with my car. I think we are going to have to try different flip keys mate, as I dont think this 433 = 434 theory works on all cars!