2013 RX 350 60K miles. Purchased 4 months ago. This is a non-Nav RX. Have been using all audio interfaces the system provides (CD, BT, SAT, FM, Ipod) with no problems. Started noticing when I would shut the vehicle off at night the next morning it would be on a different interface. I am not one to turn off the audio when I turn off the vehicle, I just shut it off. I was listening to a lot of XM at the time since the trial came with the purchase. When I would start the vehicle the next morning it would be on FM! Weird. Issue has now morphed into AUDIO OFF the next morning when I start the car. More weirdness. All the interfaces still work I just dont know what is causing this behavior. I have searched this forum and read the manual with no luck to be found. Has anyone experienced this issue and know of a solution? Thanks