Problem: a Land Rover Discovery Sport from 2017, 2.0 TD4 AWD engine code AJ200D. Gearbox was faulty so we sourced a used one. Problem is now it gives a fault code 0631 on TCM which seems to be faulty VIN number. I can read VIN in the gear selector and that is correct to the car. But the TCM VIN is from the other car we sourced the used gearbox