Hi guys i picked up my new 172 cup yesterday on a 03 reg quite clean too. After getting home i realised the central locking was not working and when i texted the guy he said i lock it by the lock on the door which doesn't lock the boot or pass side door unless i press the lock button on the dash Great!. I was going to try a new battery but i don't think its that it looks like there is a piece missing from the inside of the key' . Can anybody post me a pic up of the inside of the chip board in the key to see if mine looks the same or if somethings fallen out of it? . Thanks again .