On the heels of iPod integration into your BMW, the car company also added Bluetooth support for your cell phone…
BMW Universal-Hands-Free System with Bluetooth Wireless Technology.
Revolutionary wireless technology allow you to create a hands-free communication system in your BMW with a Bluetooth-enabled cell phone. Just bring your cell hone into the cabin of your 3 Series and you will be able to send and receive calls through the vehicle’s electronic hands-free system. As long as your BMW and your cell phone are both turned on, you don’t even have to place the cell phone in a cradle — it can stay in your briefcase or handbag. The system also features an advanced voice recognition system for true hands-free dialing.
Original BMW Accessories Catalog – PD10402-100M (Page 41)
ULF Bluetooth module for Sedans and Sports Wagons form 3/03-on:
Part #:84 21 0 934 552 Price:$435.00
ULF installation kit:
Part #:84 11 0 302 639 Price:$164.00
**Not available for 2004 vehicles equipped with BMW Assist.