RX350KC

I have the same problem and the dealer can't figure out how to make it stop. Anyone know?

I too am experiencing chatter from my sunroof. I am curious to know how you resolved your issue. Thanks I have the same sunroof issue. Have had the RX350 for 6 months and taken it in 3 times already. Heading back tomorrow. It actually seems to get worse each time I take it in. If anyone has had this issue solved please let me know how! THanks

I have an '08 RX 350 and the sunroof is so loud (closed, open, or tilted) that I wish I had not purchased it. Have had it for 6 months and have been back to the dealer 3 times. Will be going back again tomorrow. The car is wonderful but the sunroof is such an issue that I can't appreciate the good qualities of the car. It makes spring noises, rattles and creaks. It doesn't matter if the cover is closed or open. It isn't the drip pan either. I live in a hot climate. Does anyone know how to make this stop?