Sounds familiar. I bought a 2008 LS460L in Mar 2013 w/ 66,000 miles. Just turned 89,000 miles and was told last week by Lexus dealer that it needed $11,000 in repairs including all 6 of the upper & lower control arms, plus 2 fuel ratio sensors that just happened to go out at the same time, a water pump and an oil accumulator and a brake accuator among other items. Lexus only felt liabel for $2000 despite a raft of complaints about these items and redesign in the case of the control arms. My previous car was a Lexus LS430 on which I put 134000 miles. I believe in don't get mad, get even. I can't sell the car because it won't pass inspection. So if you see a Lexus LS460L with lemons on each door of the car, wave.
drummr.