After a lot of trial and error Ive got the Uconnect to activate with just one command repeatedly sent every 100ms.

I created a txt file (Ucconect.txt) containing the following

(1607033557.000000) can0 208#00A2090000002D
(1607033557.100000) can0 208#00A2090000002D
(1607033557.200000) can0 208#00A2090000002D
(1607033557.300000) can0 208#00A2090000002D
(1607033557.400000) can0 208#00A2090000002D
(1607033557.500000) can0 208#00A2090000002D

using canplayer to repeatedly play the file

canplayer -I Ucconect.txt -l i -v

It takes aproximately 30 seconds for a connection to the phone to be established.

#NOTE: the Ucconect module is configured via voice commands - I had previously paired the phone while the uconnect module was installed in the car.

The next step will be to identify the codes sent when the ucoonect setup button is pressed on the head unit. That in conjunction with the addition of a microphone and earphone should allow me to configure the Uconnect while on the bench.

I am hoping to use the uconnect button to initiate the pairing function on my new and improved Bluetooth interface with out the rather inept voice control.