I have an '06 430. Every time the temperature goes to freezing or below I get a rattle from behind the Nav system. The dealer was advised and they say they put foam around the winshield/dashboard interface, but this did nothing. This has happened for three winters now and it's getting worse. At the last servicing I advised the service technician who told me " that Lexus makes a good car, but its not perfect". My old Mercedes S430, BMW 540 and X5 never had rattles like these.
It's just a rattle, but it freaks me out when I drive a rental Buick that's peaceful and quiet!
