Installed an X950bt the other day. Used an Axxess CHTO-013 harness for install into a 2006 Grand Cherokee.
Every time I start the vehicle, it boots up from where it left off, but then suddenly lowers volume to minimum on its own and changes modes. For example, starts on FM1, then cuts volume and switches to FM2.
I've only saw it happen with basic radio so far. Still don't have my Sirius antenna or iPod cable installed yet to see if it does the same sort of thing on those source modes.