lkirchner

My SL55 has been sitting for 6 weeks due to a vacation for me in the hospital. The car has been started and run several times over that time period but not driven. I drove the car for the first time this morning to my office and the radio did not play. I also tried to use the CD magazine and the display came back "Device not found". Could the problem be that the car has not been driven and what should I be doing to get it back to normal?

Thanks