Jed,
Hope it all goes well on saturday and you will be able to post back a way to solve this problem! I have 2 questions though?
1. Have you managed to blank your ebay key or is it still programmed to another car?
2. Do you have both of your original fobs that were programmed to the car?
The reason for my questions are during my visits to Lexus they were unable to re-programme the key to the car as it had been programmed to another car. If it was blank it can be easily programmed to the car and then on my last visit I had read you could try an ECU master reset but when they took it in to try and do it, as I never had both original keys they unfortunately had no success.
Regards
Chris
07. IS220d