I have a 2006 IS350 with Navigation and have using my droid-x with a audio cable to listen to music via AUX Input. Recently, when I press the CD/AUX button, it doesn't switch to AUX (it stays at CD). It plays the CD fine but it doesn't toggle between CD & Aux. Has anyone experienced a similar problem or have ideas how I can troubleshoot this? Thanks in Advance.