no sound of navigation app. when BT is activated

[frorgaba]

hello,

I have tried many navigation apps (Maps, Sygic, OsmAnd) and for each of it I have the same problem.
As soon I turn on my car and BT is activated I cannot get any message of the app. on my Note 10+ nore on the audio systeme of my car.
Sygic is configured with voice on Note 10+ speakers and work fine until I turnon my car.
There must be a bad setting in my Note 10 + but where?

If somebody have a solution;

thanks