Thanks so much for the reply, I will try the adaptive relearn tonight and will report back with the results, if that doesn’t work I will order the listed left switch and swap them outP160A codes can only be reset doing an adaptive relearn for the module they get set in. You need a one of the newer versions of forscan that has that functionality for the AWD and PCM modules. Any test versions with a date of march 1st or later have that functionality.
https://forscan.org/download/FORScanSetup2.3.47.test20220307.exe
With that said this tutorial is for a left and right hand switch combo of SW8579 and SW8576 not SW8585 and SW8576. SW8585 is for an adaptive cruise control system with lane centering. Your P160A error codes are due to the adaptive CC and lane centering buttons not being able to be functional i.e. missing modules needed for ACC. The correct switch is SW8579 for the left hand switch. With that said the adapative relearn might be all you need and all the other buttons except those 2 buttons for ACC and lane centering will still work but no longer throw any error codes.
If the adaptive relearn doesn't work you need to change the LH switch to SW8579 and use the correct SCCM code for the SW8579 and SW8576 switch combo.
edit: dealer is willing to accept a return for SW8585 so I will replace with SW8579
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