How-to: add a spare Dodge Charger (2011-) proximity smart key with xtool x100 pad3 in less than 5 minutes including pull pin code.
Connect xtool pad3 with vehicle via OBD socket
Select Diagnose->Dodge->Proximity/Fobik (RFH)->Charger 11 up->Read security code
Read 4-digit security code super fast
Select Erase smart keys
Xtool X100 pad 3 requires to enter security code to continue
Erase success.
Select Add smart key
Open emergency light and turn ignition off
Put the smart key near to center console, then press unlock once in 30 seconds
Program completed.
Test the smart key.