I have a 2005 lx470, (31,000 miles) which I just purchased from a dealer. Had it certified. The vehicle "thumps" just after releasing the brakes from a stop. Does not do it every time, but often. Very annoying. Sometimes it will thump when pulling away from a stop. I do not see much on the LX message board, but it is all over the GX 470 message board (17 pages!! :o ). What they write on that board describes this problem exactly!! Lexus has a service bulletin on this for the GX, and has been replacing the driveshaft and rear control arms.
Has anyone with an LX470 had a similar problem?