On or after 2018 Chrysler vehicles, it has install the security gateway module. In order to clear codes, active test, bi-directional control special functions, the better solution is to bypass the module by using 8+12 cable. But you might need to pull a radio or just using another kind to find ecu and chassis ecm to plug 8+12 cable to go around Chrysler auto off program. This is a legitimate way around it.

Chrysler 8+12 Cable (FCAR Part No: FCAR-031-CBY)

1) Locate the security gateway modele which is installed below the dashboard

2) Remove the connector of the security gateway module

3) Connect Chrysler 8+12 connector

***The security gateway module is often located in the side kick panel, passenger side near the glove box, or behind the radio

4) Using FCAR scanner to diagnose 

5) Coverage:

2018 and newer Chrysler, Dodge, Ram, Jeep, and Fiat now have a secure gateway module or SGM. This SGM will not allow your scan tool to do bidirectional controls on the vehicle. FCAR Chrysler 12+8 Adapter can bypass the SGM.
2013+ RAM Promaster
2015+ Fiat 500x
2015+ RAM Promaster City
2016+ Jeep Renegade
2017+ Alfa Romeo Giulia
2017+ Jeep Compass
2017+ Jeep Cherokee
2018+ Jeep Wrangler
2018+ Ram Trucks
2018+ Dodge Durango
2018+ Jeep Wrangler (JL Body only, not JK)
2018+ Dodge Journey
2018+ Jeep Grand Cherokee
2018+ Chrysler Pacifica
2018+ Chrysler 300
2018+ Dodge Charger
2018+ Dodge Challenger
2019+ Most Fiat/ Chrysler/ Jeep/ Ram vehicles
2020+ ALL FCA vehicles