I just bought a CLK500 after many happy years with my C230 Kompressor. THe one issue I have noticed is every time I start the car after its been off for a little while (more than 5 mins) the radio defaults back to speech mode. I have to go into the sound settings and change it back. I searched the forum and did not find anything that seemed like this issue. Anyone have any clues on what might be causing this?

 

Ok, I noticed its not every time but it still is going back to speech. I can't figure out why the radio is sometimes changing from where I want it at (surround) to speech. Its also only when I start up the car never during operation.

Any ideas?