iPhone 15 Pro not connecting to Apple CarPlay via Bluetooth

I tried deleting the phone and reinstalling it. I tried deleting the car and reinstalling it. I keep

getting a message that my car is unable to connect to the phone

[Re-Titled by Moderator]

Original Title: I have an iphone 15 pro. Three days ago Apple CarPlay just stopped connecting to my iPhone via Bluetooth. Now the only way it works is if I use a USB cable. I am using ios 18.5. Any help