1. AdvancedAutovations has the 2004 Assist-to-Bluetooth kit listed for $460 -
http://advancedautovations.com/e530402.html
2. Should take under an hour, give or take
3. Not that difficult if you are somewhat mechanically inclined and can follow basic installation and wiring instructions
4. Bluetooth and voice recognition
5. You can make and receive calls, look at recent calls made, review the address book (phone dependent), etc. All the basic functions a cell phone can perform.
6. This phone appears to be compatible based on feedback received from other owners -
http://www.xoutpost.com/html.php?file=bmw_bt_phones.htm
7. There is a mic in the overhead console and the sound is through the front speakers. It automatically mutes the radio when a call is made or received.
8. Good, basically speaker phone quality.
9. Should just be a swap of the TCU (the Assist module for the BT module). See
http://www.xoutpost.com/articles.php?...ticle&artid=23
10. No, not if you are replacing the Assist module (note: you will lose Assist with this particular conversion.
Not to confuse things but certain 2004's can have their Assist module replaced with the Motorola combo Assist/BT module (part number 84 11 6 946 993) so that they can have both Assist and BT. If you decide to install the snap-in adaptor (there isn't one for the K700i) then you'll need to install a 2nd antenna for this. The 993 module is about $600, give or take.