One problem related to engine belts and pulleys has been reported for the 2007 Lexus RX350. The most recently reported issues are listed below.
My wife parked the cat in garage around 8 pm 5/31/13. She came inside the house and told there id smell of tar. I went and smell but did not see anything. I thought she must have driven over asphalt. On 6/1/13 I came back from workout and decided to put the car in driveway found pool of fluid on floor below the front passenger side. Moved the car and check what it is, smell like engine oil. I towed the car to pep boys. After examining the car they found oil is leaking underneath of engine and mentioned to me some kind of tube is leaking. Underneath of engine block. They suggested to take to a dealer. I towed the car again to redlands Toyota, redlands, CA 92373. After hearing the problem he said it is similar to a camery problem which was recalled. He mentioned the v6 engine of Lexus RX 350 and camery are similar. He checked Lexus recall history, it was not recalled on 6/3/13 he called me and informed that vvti oil line have a pinhole causing oil leak. He also reported as a result of oil leak drive belt is all oily I had to go thru hassel, loss of transportation and mental agony not knowing what happening I did research and found rubber vvti is prone to be leak (2007-2011) and. Lexus re[laced that piece with metal. I contacted Lexus customers service, they will not accept Toyota's finding. I had to take it to Lexus dealer. What a waste of time, gas, and unnecessary hassel. . . . .