Does it go out for a long time? I have a 2011 MKZ with Sirius and the signal does, on rare occasions, go under for a few seconds in clear areas (no overpasses, tunnels or the like) Like a cell phone, the signal is susceptible to weather and atmospheric issues, etc., not to mention other interference or "gaps". For example, there is a street I go down every day and the signal drops in exactly the same place. Obviously, some nearby building or something else is interfering. Even though the owner's manual says that terrestrial antennas take over to "bounce" the signal along when you're inside covered areas, it really doesn't work that way. Overall, it doesn't happen very often though. 99% of the time, it works just fine.