I have had my mini convertable for two years and recently I have had some issues with it starting after running for a while. Everything is fine, all lights go on, no problem indicator light however the car won't turn over. If I wait about 30 minutes it will start. I have had it to be serviced two times and both times they could not identify a problem. It is automatic and under warrenty for another 10,000 miles. Anyone else have this problem?