Tyre Pressure Monitors

[MY300]

I have fitted my 22' rims with TPM bought from the US..same part no ..
They are fitted to the inside of the rim where there is another hole for them to be fitted ...They do not work..and the evic is reporting a tpm fault ..would any body know if this could be a software issue that is accessable by me or Chrysler service. I spoke to Brighton Chrysler and they did not Know what the problem could be ...need to take it in...I also noticed on the US set that they have a frequency marked on them maybe the Evic can be changed to search for them??? just guessing
I replaced them so as to keep my stock rims intact... Thanks..Frank