Audio warnings have suddenly stopped working

[CAA_0210163903]

Hi, any thoughts on this? My setup is basically audio-only - Bluetoothed into the car and displaying the cameras as a list (which I rarely look at). I haven't used it much since last autumn except to keep the database updated, but this week I noticed a problem: when it nears a camera, it no longer gives an audible warning, but the display switches to map view. And that's all it does.
I haven't changed anything (not phone, not car, not settings) for years. The phone is a Motorola G7, running Android 11.
Am I missing something? Have I accidentally changed a setting?

[MaFt]

If you go to the settings and change the audio alert to something different, does it play a sound?

Also, check in Settings - Advanced settings to see if you've turned on the custom warning volume.

Finally, and possibly the first check to make, when you're connected to Bluetooth on your car stereo do you have the Bluetooth input selected?

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