Based on your description, it seems like the problem might be related to the Bluetooth connection between your phone and the car’s audio system. Here are a few additional steps you could try to resolve the issue:
Check for Software Updates: Ensure that both your phone's operating system and the Waze app are up to date. Sometimes, software updates include fixes for compatibility issues.
Reset Network Settings: On your iPhone, you can try resetting the network settings, which can sometimes resolve Bluetooth connectivity issues. You can find this option in the Settings app under "General" > "Reset" > "Reset Network Settings."
Forget and Re-Pair Bluetooth Connection: Delete the Bluetooth pairing between your phone and the car radio, then re-pair them. This can sometimes refresh the connection and resolve any glitches.
Clear App Cache: If you're using an Android phone, try clearing the cache for the Waze app. This can sometimes help resolve performance issues.
Contact Support: If none of the above steps work, it might be worth reaching out to Waze support for further assistance. They may have additional troubleshooting steps or insights into the issue.