As tpc said, try openning up carplay, and while in carplay switch audio input to something else. In my case it usually will stay in that audio input (even when going out of carplay or restarting the truck).
As for your second issue, I believe its more on the phone side (behaves like if it has...
So ACC is still doable, correct?, My truck is a Mexican Market Lariat, which means its a mix between 501A and 502A as I understand... Rear camera and rear parking sensors; front camera on windshield. bi-led headlamps. Want to add ACC (and sensors if possible), and also the Auto-wipers.
Pic for...