Have a key that I fixed with a new battery and soldered two new switches on. Can't seem to get it to work (the red light on the key comes on when I press the buttons so I know it's not down to my soldering!) but it won't unlock the car. I've tried the thing where you turn ignition to position I or II and press the buttons to get it to recognise, but it still doesn't seem to pick up the remote. The central locking works fine when I use the key in the door. Any ideas?