Some later ECU's have the CC disabled so that it cannot be added later but to be sure you will need someone with Diagbox expertise. The only person that comes to mind is Lighty but he's not in Preston.
You could try sending him a PM to see if he can help.
https://www.berlingoforum.com/user-3969.html
You could try sending him a PM to see if he can help.
https://www.berlingoforum.com/user-3969.html
![[-]](http://berlingoforum.b-cdn.net/images/collapse.png)
