Something strange happened this morning, CX9 with Bose system had no left side sound when playing Pandora or USB. I confirmed this when I went to audio settings and slid the balance setting all the way to the left , no sound. Strange thing was when I switched to FM/AM the sound worked. I tried resetting to default settings and still didn't work. Anyway, I stopped the car, waited for two minutes then restarted the car, system worked normal as usual again, just seems strange, if it happens again, I'll take it to the dealer to look at it.