This from what ive read not personal experience.
The can bus is throwing a fit because it is looking for something that is no longer there.
first get a working set up of
Multiecuscan. Adaptor and cable then free version to prove you can connect, then get the registered version (or buy kit from distributor like Gendan and it will work). Use the simulate mode to get used to the software. (to play with it without accidently causing grief).
if you can, return to the standard configuration with the radio.
then backup the proxi alignment as instructions below.
Then remove radio and assemble/ fit new system.
Check there are no error codes on any part of the system or the proxi may not work.
When it all works do a proxi scan.
This tells the canbus system what is there, so all error measages are a distant memory
I ve done the backup myself, slightly daunting. Practice in simulate mode.
With
Multiecuscan to backup the proxi settings:
Connect to the body computer using the CAN setup/Proxi Alignment menu.
Go to the "Adjustments" tab.
Press Ctrl+Alt+C on your keyboard.
A window will open entitled "Custom Proxi" containing a string of hexadecimal characters. Be careful not to alter anything in the window, but select the entire contents by dragging your mouse cursor over them to highlight them. (They may already be highlighted when the box opens).
Copy the string of characters into a Hex editor. You can use a simple text editor such as Notepad in Windows, but if not using a Hex editor you need to be certain that the editor you use will not write additional line feeds or other "invisible" characters to the file either on saving it or copying it back.
Save the copied file in your editor of choice to your computer with a suitable name that will help you identify it later.
You can then close the
MES "Custom Proxi" window and close
MES, or carry on with a Proxi Alignment or whatever else you want to do.
If you've written a new Proxi file to the vehicle and want to revert to the original, repeat the procedure to the point where you have opened the Custom Proxi window in
MES. This time, delete the contents. Open you saved file in the editor, copy the contents in a similar way and paste them into the Custom Proxi window in
MES.
Close the window and complete a Proxi Alignment to write the file back to the body computer and the slave nodes on the vehicle.
Edit: Forgot to add, if you open
MES in simulation mode without connecting to a vehicle, you can open a specimen "Custom Proxi" window as above and copy and save or paste back the contents as much as you like without changing anything.