2003 s500 radio

your fiber optic system has been compromised. check the configuation and repair

Yes and it is a simple fix. Its seems be a overload when the navigation disc is running along with radio and or cd player. I took out nav disk and I have not had that problem since. It is a inconvience but I really don't use nav too often and when u need it just put in nav disk. I would try this first. Hope it works for ya let me know your outcome. There must be a power of memory loss when everything is running at same time....TooSmooth