Mine is 2007 Camry XLE and has a wierd problem where it oftenly makes a rattling sound like 'drrrrrrrrrrrrr' from volumecontrols+CDPlayer rare side .
I am not reproduce the sounds when I took it to mechanic for the whole day .
When I took it to Toyoto showroom they recommends to replace servo motor and if still not resolves problem then the noise replacement of blower box assembly be necessary and charges are nearly 2130 USD .
Do I need to immmediately repair this as I am not reproduce the sound whenver required or else wait for it to be a continuous problem .
Please help me on this .