I have awesome news for everyone who is stuck at the process of having the sales code added to their VIN.....it is not needed!
I now have successfully functioning passive entry on my 2020 Bighorn, which did not require any restore/replace procedure at the dealer.
After looking back over the list posted by
@Jimmy07, and having it still not work, I was not satisfied that it just wasn't possible given everything else you can do without a dealer using AlfaOBD. So, determined not to have to stare at non-functioning passive entry handles in defeat, I went through the entire list one by one and found 2 more entries in addition the the ones listed that were related to Passive Entry. (see the items surrounded by asterisks in the list below)
I had already enabled everything else previously, but I verified everything was still set, made the two additional changes, then disconnected the negative battery terminal. I waited about 30 min, reconnected the battery, and when I pushed the button on the driver's side door handle the doors locked and lights flashed. I couldn't believe it. I must've tried it 20 times over and over just to make sure it wasn't some weird one-off fluke.
If you configure the settings as below using AlfaOBD, disconnect the battery and wait a bit, when you are done you should have a functioning system. Keep in mind this was on a 2020 with the level 2 equipment group and remote start, and I used a full Mopar door harness on each door, however it has been proven to work by just running the additional wires to the handles if you prefer that.
A huge thank you goes out to everyone who has put in so much work on this whole upgrade, that frankly should've come standard on every model. They paved the way for this to be possible.
VehConfig 3 fobik safe enable- YES
VehConfig 3 passive entry present- YES
**ECUConfig 3-Passive Entry Present- YES**
LIN and Misc fobik safe alert no reply- YES
LIN and Misc fobik safe alert on system fault- YES
LIN and Misc fobik safe alert on search timeout- YES
LIN and Misc fobik safe alert per ignition cycle counter- 2
Wireless AP1 Left front- SMART SWITCH
Wireless AP2 Right front- SMART SWITCH
CustSetMenu 1 passive entry CSM present- YES
**Cust.Prog.Features- Passive Entry Unlock All Doors or Approach Door- ENABLED**