iOS 15 - USB Car Connection

I have the iPhone 13 Pro with iOS 15 installed and since the recent update I haven’t been able to play music via USB cable to my Hyundai Sonata. It was working with my iPhone 11 Pro which also had iOS 15 installed and only has become an issue since having the iPhone 13 Pro. The cable will charge the iPhone and does recognize the phone is connected and displays the music file being played but there is no audio whatsoever. I checked for any update for my car system and it is up to date and I also tried connecting to my other car - Dodge Journey and it did the exact same thing. The phone will play music via Bluetooth so it isn’t a huge problem, more of an annoyance but I still welcome any thoughts or suggestions on a fix for this. 80 % of the music on my phone has been downloaded as I read somewhere that not having any music downloaded could cause an issue where the car doesn’t recognize the iPhone as an “iPod”. I also tried it with other music apps other than Apple Music and still the same issue. It feels like there is some issue with either the phone or iOS.