I still had the noise even after replacing the struts and the mounts. I have to give up - I threw alot of money at the issue. I suspect its the rear control arms or lateral arms because whilst they appeared tight, it prretty much the only things I didnt replace. I gave up, and sold the ES300. I have a LS430 now
Hope you are able to track down the noise. I know how annoying it is!
Hey, buddy any luck with that rear suspenssion noise? I haven't done anything else to mine but I am truly thinking it has something to do with the wheel bearing or the E brakes. Let me know if you had done either on on yours. I really like this car the only thing keeping from loving it it's the noise.