My name is ***** ***** certified professional with over 10 years experience. I will be glad to assist you with this.
I am sorry to hear that you are having this issue.
Please follow these steps on your iPhone>
Scroll down to the bottom of the page and tap Reset.
Tap Reset Network Settings.
You will get a prompt warning you that this option will delete all network settings and return them to factory default settings. Tap Reset to continue.
Wait while your iPhone resets its network settings.
Once the reset process is done, your network settings will return to its factory default settings. Your iPhone will also automatically restart. Then try reconnect to the car audio and check.
Please let me know if this does not work or if you need any other assistance.
Please take a moment to rate my service positively by clicking one of the stars at the top of the screen then click on submit.
Thank you very much!