whitford 
2007 BMW 6 Series Convertible 650i 2dr Convertible (4.8L 8cyl 6M)
Convertable Top 
 I bought my 650i in 9/16/2009 with 3864 miles at a reasonable price.I now have 24,500 miles on it.I love the cars looks, styling and driveablilty.My problem is the convertable top censor.I have had it to the dealership and they have been great, but they cannot find out what is causing the problem.I have had it to the dealer on at least five separate occasions, it works for a while and then the sensor shows the top is not closed properly.Itstarted again today.Any ideas.I want to keep the car but I think I have a lemon.