The blade on our Polo key has just snapped. From what I can make out, the case of the key breaks when you take it apart of remove the blade, so I can't just fit a new blade. Various places on line sell blank keys with electronics that will need to be programmed for around £20. In the pictures, they appear to be unassembled. My plan is to transfer the electronics from my old key into the new shell, then just get the new blade cut at a key shop.