Today I struggled with the replacement of tcu from 2017 to 2020 in fusion energy 2017. It's a big deal, I have the tcu part number LV4T-14G229-DP, and it detects it in the system as LB5T-14G087-XH.
First thing is after replacing the GWM with the newer one from 2020, most of the modules have disappeared from the car, it does not detect them.
Second thing, Apim doesn't detect TCu, can't see serial tcu number.
If I swap back to the original GWM and TCU, everything is back to normal. I think the gwm is too new. I am now looking for a GWM kg9t-14f642-bc with fusion energi 2020.