I have the same TCU (84.11 6952218-01) problem. Car was an 8-04 build date and the TCU is a 7-27-04 date.
The module has a BT board in it and it has the Farka connected to the TCU and the BT antenna under my armrest. It also has BT logo on it and all documentation was in the Manuals.
Talking to the dealer is like pulling teeth. I just wanted to know if it just needed recoding it to turn it on or not. What stumps me is the BT board in the TCU. Although reports on that model TCU say it dosent support BT, It makes me wonder why there is a BT board inside and it's connected to the antenna. I dont think Motorola would have made that big of a mistake with it when they manufactured it.
Funny thing is when I purchased the car new in 10-04, the window sticker showed BT/Assist and the guy even tried to pair his phone to show how it works, but he couldn't. I chalked it up to him being 65yrs old selling BMW's and at the time I didn't need BT. Unfortunately now I do.
Has anyone heard anything pertaining to this model. Would Navcoder be able to turn it on?

Smitty