do you mean it wont come out of the tube on the car? if so common issue, they can sieze in. try spinning the cable to free it from the metal guide tube. if that doesnt help a firm yank will see the cable come out still stuck into the tube, then its a case of freeing the tube from the cable then refitting it. its not easy to get it back in on a mk3 unfortunatly, you have to remove the console around the handbrake lever and lift the carpet up at the back, so try your best to get the cable free of the tube without pulling the tube out