Park Assist System Temporarily Unavailab

[IMAY2023]

For both of your vehicles it parking assists is exactly the same. There is no separate HW (physical) PAM module, it is embedded in the CEM itself. 
Check out the below links for wiring and operations. 
MY2018 T5   MY2017 T6

Not sure which harness is replaced but it might have a short after or on the bumper to car harness connector.