Hello all; I just purchased a 2008 SLK55 AMG and am having a problem with my sirrius radio. I am not getting all my sirrius stations. If I press scan the stations increase or decrease (based on the direction i go). However, after a while the number sill stop and wont move any further. If i key the number in the station will start playing. Why can i not scan all through my stations. Is it something I am doing or is it Sirrius. This may also be a stupid question but should I be able to press any of the information on the screen itself or is it all buttons on the side of the communication center. Thank you all in advance. Richard.