Congratulations on your new iPhone 8 Plus! It's my understanding that you're not receiving text notifications in your car. I'm happy to help.
If you're using CarPlay, please follow the steps below:
Set up CarPlay with your iPhone
- Make sure that Siri is turned on.
- Restart your iPhone and your car. Depending on your car, you might see the CarPlay Home screen when you turn it on. If you don't, look for the CarPlay logo on your car’s display.
- If possible, connect your iPhone to a different USB port in your car.
- Try a different Lightning to USB cable. Make sure that the cable is certified.
- Update to the latest version of iOS.
- Check your car’s manual for help. You might need to install firmware updates for your stereo.
Learn more about CarPlay and driving and navigating safely.
Thank you for using Apple Support Communities.
Have a wonderful day!