Droid use with Prius C 2012

I have a droid Bionic that links great via blue tooth. Phone works and it will stream music. My problem is when I use the Prius controls to change track I seems to go into a pause mode. The play arrow shows up but pushing it does nothing. I have to disconnect and reconnect for it to work again. Any thoughts. I just bought this car a few days ago so please be patient with all my questions. And I do use the search function.