I have a 2001 RX300. I'm glad to hear that someone else has this "ticking" problem because I have the same problem and no one is able to fix it!! I also have a ticking noise that occurs about every 10 to 15 minutes normally when the weather is warm. I don't know where it's coming from but it sounds like it's coming from the back part of my car. I had someone from the dealership drive around with me but of course, it didn't tick once b/c the weather was kind of cold out. I'm not sure of the cause and I would REALLY like to get rid of it. Have you had any luck? Thanks!!
