So lately I’ve been having issues with the volume in my car. For example, today had my iPhone plugged and talking on the phone. I was trying to lower the volume of the call, but the volume didn’t change at all. I noticed the screen said the I was adjusting the “guidance volume”. What the heck? Then later I was listening to the actual FM radio, but with my phone still plugged in. Again, I tried to adjust the volume to the FM radio, but no changes in volume and it said it as adjusting the “guidance volume” again. I unplugged my phone and then adjusting the volume worked perfectly normal. So tell, why was it adjusting the “guidance volume” when I wasn’t even using navigation?!