Thanks for the reply,
Hey, Thanks for the reply,
The sound shuts off after I turn off the engine. Unless the engine is running and audio system has a power the sound continues. It doesn't have to do anything with heater, locations, cell phone or any devices near by.
I just got my car out of the dealership after getting my first complementary service and fix of this problem, but they said they compared 3 stock units and all Camrys makes the same sound. They brought me a XLE model to compare, and I was able to hear it too. I didn't had enough time to check other units. If any of you have time could you check your own speakers and let me know if you hear anything. It is a sound like you turn on the computer speaker with maximum volume but no music on.