In case anyone else is looking into this issue, Pandora and Android Auto will not function at the same time. It shows that Pandora should be available phone is connected and android auto in settings and the manual. Pandora is not available as an option. It will however work if you unplug your phone. I contacted Pioneer support and they were surprised to find out the same thing. Hopefully an update will fix it.
Please call and complain so they resolve this issue.