There was a software glitch - fixed by a reprogram (patch) of the ECM. Only affected early 2008's, then they fixed it in production. The bug showed when you lost battery power - then you'd lose the ability to program TPMS and/or the key remote would stop working.
http://www.skyroadster.com/forums/f5...r-reset-28378/
Can the dealer check and see if the car's system has been updated?
