Stereo display shows "Service"
I just bought a nice 2002 CLK 430. Today while I was driving I tried to change the radio channels (ON FM radio) while I hit the roward button (to ove through the channels) the display suddenly changed to "Service" and the radio nor any other audio function would turn on or work anymore. It just shows "service" on the display.
How can I get the audio system to work again?
BTW this is the factory audio system with Premium soun d package.
Any input would be greatly appreciated


