Ok so I bought my tC used in April 2010, it's an 06. I didn't notice it until after I paid for it. The rear hatch waked and obnoxious squeaking sound as if the window is lose or the hatch is idk something.. Now the noise only happens when any one or more windows are open. (sunroof driver/pass window) when they are all closed it will only happen if I hit a big bump. It squeaks/rattles with any road vibration. Any ideas? I put double sided foam tape between the plastic on the hatch and the hatch it's self. Seemed like is helped for a week... Now it's back full blast.. I'm soo sick of not opening the windows. I can't even crack the windows or vent the roof..

 

Your gonna learn that its real common for the tC to have rattaling issues. Not sure if this will help you out or not but here is something you can try to hopefully cure the problem

https://www.scionlife.com/forums/tc-tech-diy-1818/hatch-rattle-fix-33086/

 

and if that doesnt help try some of these ideas.

https://www.scionlife.com/forums/sho...tch+rattle+fix

 

Wow thanks ! I'll be tearing out the rear sat for my coilovers, I'll attack that noise at that time!

 

No problem. Although a little searching would have gotten you the answers you were looking for.