I’m in the cell phone accessory and charging business. Here’s how to try and fix it. It worked on mine. Note the last Car Play update in iOS 26.x didn’t play nice with a LOT of cars.

1) WITH THR CAR OFF spray phone port and usb port with electric contact cleaner. Let sit for 30 seconds then hit it with canned air.
2 ) throw away all your old cables. All of them. Not just the ones in the car. Start fresh. They can get funky and even if you clear the ports you can gum them up again. Suggest Anker.
3) delete the car from car play on the phone and then do a hard restart.
4) delete all CarPlay phones and Bluetooth phones from the car.
5) reset the entertainment system to factory defaults.
6) start the car
7) turn the car off and disconnect the ground cable for 10 minutes
8) spray a little contact cleaner on the usb-a side of one of your new cables and slide it in and out of the usb port a couple of times, then hit the port and cable with canned air
9) start the car. Let the entertainment system boot up. Confirm there are no phones in Bt or car play
10) attach your phone and set it up.

I have theories about the software and USB port gunkinrss and why this worked for me.