my car radio detects the bluetooth device and plays it, but no audio comes out, on the other hand, audio does come out for the radio and the aux, I don't understand what can happen?
I'll need to know a little more about your vehicle and your setup before I can help. What is the model number of your Pioneer in-dash receiver? Are you using aftermarket speakers and amplifiers? Do you have a subwoofer? You can find more videos on Pioneer's RU-vid Channel here; ru-vid.com
You may need to adjust the Local Seek filter. Check out this video for the AVH-X380BT AM/FM Tuner: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-L3BZjVEtJGU.html