This is a write up of my experiences on installing the bluetooth retrofit. I think this will help anyone considering the bluetooth retrofit on a M3 because many of the post are a little old at this point.
I followed this thread for my basic guidance:
http://www.e90post.com/forums/showthread.php?t=122545
Since many of the parts are superseded and I wanted my local dealer to be responsible for the service and parts ordering. I worked with Andy and Bo at BMW Austin. They were very helpful but they had not done this retrofit before. I did get a 10% BMW CCA off the parts and service but it was still expensive.
Here is what I ordered for my e90 M3 with Technology Pkg with a 05/08 build date:
65-15-9-135-687 Bracket for Telemat
07-11-9-904-019 Hex Nut x4
84-50-6-928-461 Bluetooth Antenna
84-31-6-938-762 Hands Free Telephon
65-13-6-938-657 Loud Speaker
65-20-6-935-024 Back-up Antenna - This part was not needed.
61-31-9-197-759 Switch Unit Roof
84-10-9-206-422 RMFD Telematics Con
TOTAL: $848.89 + Tax = $918.92 - $33 for the unused part
Install was "3 hrs labor". My car went in last Tuesday morning and I didn't see it again until Thursday at mid-day. Seems like the directions BMW provides (see above thread) are not complete and that a Japanese service bulletin has the correct steps to get the retrofit to working. The labor total was $299.
All in, it was $1185 and 2.5 days in the shop. Was it worth it? I would say Yes. This was the only option I didn't have that I considered "must have", so for me it is worth it. Next I will add the iPhone 3G snap in but I'm not sure if I need/want to do the 6FL retrofit to get the audio working.
So far the bluetooth retrofit works flawlessly and I've been very impressed when I'm entering and exiting the car and the conversation seamlessly transfer between the iPhone and the in-car bluetooth. It is also very clear in all conditions and most people don't hear any car noises and assume I'm at the office. That alone is worth it!
Hope this helps anyone considering the retrofit and I really appreciate the effort of the others who documented their experiences here and on the e90post.
Cheers
