Thanks! I have the car in shortly for service to try to fix this - will let them know about the suggestion.
I had front passanger door glass rattle on my RX350 08 after 15k (when glass little bit down).
The main cause is: after while robber insulation in door getting more stiff and does not absorb
vibration. Therefore the dealer replace regulator and insulations of mounting points.
Now no rattles so far. (It's covered by warranty).
Regards, Oleg