So, the new controller arrived yesterday. I fitted it the same day and:
- no steering assist (even if I've done the coding and read a lot of threads)
- the steering wheel controller was impropertly coded
- I could not access the settings menu.
Thus, I will send the controller back to the seller and I will forget about Polar FIS+ or Fiscon E-MFA
Neil, during my searches I found why your highline instrument cluster is not working properly: you need to upgrade your Comfort Control Module (CCCM) / Central Electronics Control Module (CECM)
Here is the link where I got the information from.