I have a 2001 GS 300 with Mark Levinson Sounds and Navigation.
For the first time since I got it the Radio's/Cd's sound went completely out.No volume and you could not adjust the volume or the rear/front speakers or balance from left to right.The nav voice was still audible.I went through the entire screen and found nothing like a mute button or anything but it was almost as if the sound was muted.
I pulled over and turned the car off and the sound returned.
I am wondering if there is a problem with my radio or is it a hidden button or feature that I am missing?