Occasionally, I listen to XM in my car with the engine off. A couple times, that has led to my saved channels being lost.
Today I learned that cycling the power on my car's XM radio recovers my channel settings. I had never tried that before, I just reset them manually. This time, some of the channels were unavailable, prompting me to try turning it off and on before calling customer service. Obviously, it gets turned on and off by turning the ignition every day, but I hadn't turned it off from the Off button as a possible fix before.
It's brief because it's BlackBerry