The Sirius in dash nav radio either will not come on, comes on and has no sound, dials wrong numbers on the Blue Tooth... This has been to dealer - once replaced radio, next time claimed they can't get problem to occur - today, Dec 15, 2009 back in for radio, still claim they can't get it to malfunction... yet it happens to me. I left dealership a little upset - however, they said to come in the moment something changes and they will handle it immediately. We'll see. The other day the entire radio system shut down for six hours.

Update from Dec 18, 2009: Dec 18, 2009 - Again radio is out. Drove directly to dealer with radio malfunctioning. The very kind mechanic ran an updated CD - radio sound came on. Left dealer, on way home - radio sound went out and nav system came on. Strange. Called dealer asap (Blue Tooth also affected), appt in five days to drop off car - and they will see if replacement radio is warranted. They could not take car any sooner...blaming computer in radio.