When I disconnected my car battery I locked the car stereo. Unfortunately when I tried to put the code in I've jammed it by guessing it wrongly too many times. I have now found the code but it won't let me enter any number now. Anyone got any ideas? I've seen various offers of how to to do it on the net but you have to fork out in advance without knowing whether it will really work or not. Its a Ford 2015 if that helps. Cheers