I have a 2016 XLE Hybrid with the Entune Suite. My integrated Nav instructions is barely audible with the radio on, and it doesn't mute the radio when the audible instructions are read. I have the box checked that says to mute the radio, I have the Nav settings for the audio as high as they will go. Any suggestions?? I have to keep the radio very low to have a prayer of hearing the instructions for the next turn.