krypttic

go99 said it's coming from "under the car," which is NOT the luggage cover.

I've tried everything to secure the two luggage covers (the one clips to the rear door, and the one that retracts and runs across the whole back). When I go over a bump, it still rattles and drives me insane. I don't like the look of the rear without these pieces, so I have to choose between aesthetics or no rattling. Disappointing....

The suspension in this thing is also more "truck-like" than I expected, so that doesn't help with the noises.

I'm curious to see what "well documented noise under the car" go99 is referring to?????

You have just discovered what has irritated thousands of Lexus owners since 2007. The Nav system that only works right when the car stops. There is only one place that I know if that has figured out how to get around the lock out. Lexus will not help you with this.

http://www.prestigioussociety.com/testimonial.html

As for you rattle on the roof, its actually coming from under the car. The car design makes it seem like the noise is from the roof rack, but it is not. This cause is also well documented, just ask your service advisor about it. 15 minutes at the dealership and the noise will stop.

Good luck!

Could you elaborate on the rattling noise? I have a rattle when I go over bumps, but it sounds like it's coming from the passenger side somewhere (almost like the rear passenger side). I removed the tonneau cover completely to no avail. It's driving me crazy! Thanks

Try securing the clips that hold the luggage cover near the rear door. Lock them into place. It is a well known issue and the dealer even mentioned it when I bought my RX.

Thanks....I'll give that a try before I take it in. Very annoying since what I love about the RX's is the quietness!

I have the V 8.1 nav disc and find it woefully inadequate. Frequently in well populated, older areas, it will not be able to provide guidance until it gets to a major highway or thoroughfare. Debating whether it's worth 200 to get an updated disc that might not be much better. Anyone else dissatisfied with their nav system guidance?

Larry

If you have a 2010 RX350 or RX450, you can't upgrade to v9.1 yet. We have HDD navigation systems and the partition is slightly too small for the latest software. Lexus is (apparently) revising the software and will be releasing it in a month or so.