My 550 Sport has been at the dealer for going on 2 weeks! My transmission failure was due to the "trans module". This part had to be shipped from Germany. It turns out parts were being held up in customs (at least that is the reason I was given for the delay). I have had a 135 as a loaner which is a hoot to drive. However, I am starting to miss the ride and amenities of the 550. Hopefully it should be finished by Monday

On a related note - I understand I am getting the "latest" transmission software. Does anyone know if there are any benefits to that? Improved shifting, etc???