Just bought my 2020 Overland 5.7L 4x4 and see that it is rated at 7,200 lbs tow capacity on pg, 261 of owner's manual if it has heavy duty cooling. Pg 34 of product brochure (Overland) says as to Trailer Tow group IV, "Heavy duty cooling.'......"Standard on 4x4 models."
There seems to be some controversy as to what that cooling package consists of but there is no question that I have the 7,200 lb tow rating.
Still don't know how to set audio to come on with ignition.
Tow pack comes with the HD cooling. The Overland comes with the tow pack. Of course with that much weight you best have a brake controller and weight distributing hitch.