As much as I wish to say I trust you folks, I took my Lexus ES 300 in to have a noise examined and the mechanic misdiagnosed it as a radiator cap leak. As soon as I picked up the car, I heard the sound again. This is the second time I have brought this car in for work and the problem was not diagnosed. The first was a light on my dash that still lights up. But as I drove my car back to the shop on Wednesday, I did not hear the sound, but the dashboard lit up and that is now what is to be fixed next week (ordering a replacement part on a warantee). I want to have faith in you guys, but I still have the dash board light indicating a car light is not working and the damn sound. I keep hoping this will be resolved.