Originally Posted by lumpdog
I have a 2005 roadster that when not driven the battery goes completely dead. This can happen in just 7 day's. The dealer is lost and say's that the computers on board drain it. I have friend with a bmw m3 and he say's he leaves it for long amounts of time and it always starts. I can't imagine it has any less computers.
The last try by the dealer was the trunk latch. HELP. 
Try unplugging the little trunk light inside on the bottom right. I think that the draw, while not great, would run a battery down over 5-10 days. Thoughts?