My car only came with one key, so I got a blank of eBay, had it cut, and have been repeatedly attempting the UK programming procedure here http://www.350z-uk.com/index.php?showtopic=16896 posted by GIXXERUK
The new key will now lock and unlock, but won't start the car.
Have tried various combinations of this process, unlocking with main key, then main key in barrel and running through the process coding both the keys, then also tried unlocking with main key, then putting new one in barrel and repeating process... but same outcome. Any suggestions? this is driving me mad lol so close to success!