When I turn on the fan there is a buzz that only comes out of the left speaker up on the dash. I am young with good hearing and I find it very annoying. Some older passengers can't hear it. Does anyone else have this problem?

 

That may not be the speaker, but could be the plasmacluster air cleaning system.

 

The buzz is definitely coming from the left dash speaker. I only hear it when the fan is on. The navigation and bluetooth only use this speaker so it appears that the fan noise is somehow entering this part of the audio circuit.

 

Try this test to see if your camry has the buzz. Start the car and turn the fan off. When the engine stops press the fan on button and you should hear a buzz from the left dash speaker. On my Camry I can hear the buzz before the air starts blowing. When I press the off button the buzz stops. When I take my Camry in for its first service I'm going to have them fix the buzz.