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. Autel has provided a cable to bypass the SGM. Image: source: http://www.obdii365.com/wholesale/fca-128-universal-adapter-cable-adapter-for-autel.html Function:1.OBD instrument mileage calibration, OBD anti-theft matching, etc.2.Used with other diagnostic devices…