Thanks, but the situation has gone from bad to worse over the weekend. I was out of town the last 2 days so this morning I went to start the car, and nothing...not even a little click of the engine trying to start, no lights on the dash, nothing on the nav screen. I don't know if the sound issue was the start of something else or the cause, but now I don't know if it is safe to have it jumped or just have it towed to the Lexus dealer. Just glad my wife is not working today, so I had her car to get to work almost on time....will be calling Lexus shortly.