So just bought an 09 Lancer GTS. Has the RF with Nav. About 30 to 60s after starting the system it cuts all audio. No music from any source. No NAV voice. Hell beep feedback from the touch screen won't even come through. I thought it was an overheating amp at first but when it cuts the audio it's just as cool as when the cars sat over night. I haven't tried anything yet as audio is not my forte. Any ideas please help me out.