CarPlay on my Uconnect doesn’t not seem to remember lowering the Mapping volume below 15. I tried both Apple maps and google maps. I have another brand car where this works. I know you have to change the volume only while it is speaking. Oddly it will remember if I raise the volume. But it will always reset to 15 if I lower it to less than 15 it always. This happens on the very next guidance prompt. This is a problem because the truck is so quiet that 15 is too loud and jarring. So I mute it. Then I miss turns. What a weird feature/bug.