I had similar problem when I bought my 07 ES 4 years ago. There are many possible causes. Speedevil's TSIB covers most of them. Besides these, center air vent may cause noise. You could try this, when you hear the rattle, use your finger and push the start button area (not the button, of course). If the rattle goes away when you push it and the noise comes back when you release your hand, then perhaps the air vent is the problem. Remove the vent unit and put some black color electric tape on edge of the housing, the rattle will probably go away. There is a 3rd possibility. Front windshield may result in a tick noise. Lexus bulletin TSIB005-06 is addressing this problem. This is a much harder task. You need to remove the wind shield and modify 4 glass stoppers.