Friend of mine had a clifford with remote start installed in her clio. It worked perfectly for a couple of years until one day it eventually would not start. I went over and it took me ages to work it out. Basically the installer had removed the imobiliser chip from the key and taped it behind the steering wheel cowling to trick the car into thinking the key is there for the remote start to work. Over time the sellotape had dropped off and the chip was down behind the dash. I'm sure that wasn't the way it was supposed to have been done lol