Apple Carplay volume issues on Sync 3.
After the recent (past few days) I started having issues with the volume adjustment on my Ford Sync 3 system while using Apple Car play. On bluetooth I can adjust the volume of my music or call with no issues. As soon as I plug in the cable and it kicks over to Apple Car play I lose the ability to adjust the volume up or down. Instead, the "prompt" volume is being adjusted. Has anyone found a fix? Is this is a known bug with Apple IOS?
iPhone 11 Pro Max
iOS 13.4.1
I dont know the software version of my Sync 3 but the last update was Jan 2020. Any help is appreciated.
iPhone 11 Pro Max