Maybe y'all can help. I have an LS600hL 2008 and this morning on my wifes way in the radio turned itself off. It then proceded to make very high pitch squeels evenly spaced out at about a second. It is very innoying and connot be driven without getting a headache. There is nothing that will stop the noise from happening the radio will not play and no buttons will make the noise go away. The noise is coming form the speakers, but the wierd thing is that you can still make bluetooth phone calls through the speakers because that is how she called me on here way to work to tell me about the problem. Help!!! Lexus store said it sould me the Mark Levinson Amplifier.