The newer, the better.
Units below have bluetooth and Assist

TELEMATICS CONTROL UNIT CDMA Sep-04 to Feb-05 84116946993 1st release of integrated BT/Assist TCU (personally confirmed BT). No voice
input but can be added by separate SES voice module.

TELEMATICS CONTROL UNIT CDMA Mar-05 to May-05 84106964114 Added support for voice input (phone only, not nav). Added support for
Siemens S66 phone

TELEMATICS CONTROL UNIT CDMA Jun-05 to Aug-05 84106965056 Improved performance of Address book transfer on some phones reported.

TELEMATICS CONTROL UNIT CDMA Sep-05 to Feb-06 84106963798 Fixed problem of NAV defaulting to Telephone menu on startup. Has voice
support; works better than 993


TELEMATICS CONTROL UNIT CDMA Sep-05 to May-06 84109120843

RMFD TELEMATICS CONTROL UNIT CDMA Sep-05 to Jul-06 84109122529 RMFD = remanufactured.

RMFD TELEMATICS CONTROL UNIT CDMA Sep-05 to Sep-06 84109132711


RMFD TELEMATICS CONTROL UNIT CDMA Mar-05 to Sep-06 84109171721

TELEMATICS CONTROL UNIT CDMA Sep-06 84109115729 Continental TCU

TELEMATICS CONTROL UNIT CDMA Dec-06 84109129851 part no not in realoem database

TELEMATICS CONTROL UNIT CDMA Sep-06 to Sep-07 84109166534 ENDED

TELEMATICS CONTROL UNIT CDMA 84109195455 Newest iBus TCU currently being sold by Tischer 09/2008