| Hey,
Just thought I'd say that I took my Z4 to a non BMW dealer, who fixed the problem in 3 seconds... it was actually just one of handles in the luggage compartment that had been accidently flipped into the 'up' position.
I must have done this when I was putting a large suitcase in there. It gives you a very small amount of more space, but means that you can't put the roof down properly.
Anyway, just thought I'd tell you to check these first, as I've spoken to BMW dealers before, and they'd love to take £2,000 off you even if it's not needed (just my personal opinion, maybe my experience is biased.. whatever).
Hope it's as simple for you as it was for me! Good luck. | 
