Hello and welcome to Apple Support Communities, NiteTech!
I understand your iPhone 8 isn't working correctly with your vehicle. I'd be happy to provide information to help you address this.
Use the steps in the following article to troubleshoot: If your iPhone, iPad, or iPod doesn't connect to or work in your car
"If you connect using Bluetooth
- Restart your device.
- Go to Settings > Bluetooth, and turn off Bluetooth. Wait for 5 seconds, then turn Bluetooth back on.
- Check your car stereo's user manual for how to pair with a Bluetooth device. Most cars require a phone setup on the car display.
- If you've connected multiple phones to your car stereo, try renaming your device: Go to Settings > General > About > Name, and type a new name. Then try connecting again.
- Update your device.
- Install any firmware updates for your car stereo.
- If you still can't connect, contact Apple Support."
Have a great day!