Why does my iPhone 6 not play on my car radio when plugged in the USB auxiliary port?

[iMore Question]

why does my iphone 6 not play on my car radio when plugged in the USB auxiliary port?

My iPhone 4 used to play over my car radio while plugged into the USB port but my new iphone 6 does not

 

[Fit24]

Re: why does my iphone 6 not play on my car radio when plugged in the USB auxiliary port?

What brand radio do you have installed and how old is it? Are you using an official Apple Lightning to USB cable? Some functions that work with older iPhone (40-pin cable) may not work exactly the same as the newer iPhone (lightning cable); they may need an adapter or special cable.

 

[rakham007]

I had the same issue trying to play music from Deezer on my iphone 5S connected through USB to my car.
imusic and podcasts were empty. I added a podcast and it worked. I previously had a similar issue in the past when i had the famous and quickly annoying free U2 album on imusic. When i deleted it and emptied imusic (I don't subscribe to it), I couldn't play anymore any music from Deezer.
Putting at least one thing in imusic or podcasts does seem to solve the problem. Let me know how it goes for you.