If I understand correctly you updated your phone and now it seems to get stuck calling itself when it connects to your vehicle. We would recommend using these steps from the following article about troubleshooting a bluetooth connection with a vehicle:
From: Get help connecting your iPhone, iPad, or iPod touch with your car stereo
- Go to Settings > Bluetooth, and turn off Bluetooth. Wait for 5 seconds, then turn Bluetooth back on.
- Restart your iOS device.
- On your iOS device, unpair your car stereo. On your car's display, unpair your iOS device and any other devices. Restart your car and your iOS device, then pair and connect again.
- Update your iOS device.
- Install any firmware updates for your car stereo.
- If you still can't connect, contact Apple Support.
That should reset the connection and get the devices playing nicely again. Have a good one!