My 2005 Lx470 has exactly the same problem as yours. But I didn't check it whether it is the problem coming from the windshield. That problem just came up today. If you have the answer from the dealer,please let me know. Your help is appreciated.
Thank you for the response. I did check the windshield and it is a "Lexus" windshield, so I guess that isn't it. I guess I will just have to take it in to the dealer.