Roof rattle?
 

Hi all,

It has been just about a year since I bought my CPO 2007 GX470, and I still love it like the first day I drove her! I've noticed one little thing I can't put my finger on, though - an intermittent rumbling/rattling sound coming from the ceiling during high speed highway driving and/or high winds.

Now, I've checked the sunroof itself, and there doesn't appear to be any "give" to it. It's solid. Same for the surrounding parts of the mechanism. Yet for some reason, during 70+ MPH driving and/or high winds, I get this low-pitched "WHUUUM..WHUUUUM..." vibration from somewhere above my head.

Haven't taken it to the dealer yet since I'd like to identify the issue myself if I can, but it's hard to isolate when you're focused on driving. Anyone else run into this issue?

Check cross bars on rack? Tight?

I have this same noise on my LX570 at highway speeds but only when it is raining.
When I raise the sun roof slightly, it goes away. Since we are having a major drought in Texas, it isn't bothering me much, but the source is a mystery. Rather than a rattle, I would describe it as a loud "strumming" noise. If you find a solution, I would appreciate hearing about it.

I had a pronounced noise in the roof rack at high speeds
I repositioned the crossbars and that solved the problem