IOS 14-iPhone 12 mini bluetooth audio with car stereo very low
I have noticed this recently. If I tune into a radio station on my car stereo and have the volume setting at 10 the sound is sort of loud. When I connect my iPhone 12 mini via bluetooth to hear Apple Music at the very same setting the volume is very low. I have to turn up the dial to at least 16 to equal the sound of the radio station.
I noticed that a few seconds after the song on Apple Music starts, it begins at the radio station sound but quickly "the sound level goes down" and then I have to turn up the dial to 16.
One thing I noticed today is if my iPhone 12 mini is unlocked I can click the top left button to raise the volume and it raises considerably. But when I lock the phone the sound level again is lowered.
Music>Sound check is off
Headphone safety>reduce sound sounds is off
Any help would be greatly appreciated
iPhone 12 mini, iOS 14