Recently I heard a new noise coming out of my car. Sounds like a cd change noise mix with a grr, best way I can think of describing it. I search other noises so tomorrow I will see if its related to the heater since its starting to get cold. Also keep belts and other but what else could it be? I dont think it was tied into any range in rpms, at first it was coming out of a stop but then later it was just random. thanks