So as some of you already know I just finished replacing my outer and inner tie rods, upper control arms, brake pads and rotors. I still have lower ball joints, and lower control arms (forward and reward) to do on my 2011 LS460 AWD. I just took the car out for a spin as it was late last night when I finished and there is a horrible almost like a scraping sound (looked under the car and it's none of the covers) now coming from the car intermittently. Anyone have any idea what this could be?

Here's a video of the noise.


https://streamable.com/xj09kr

 

Aluminum splash shields next to the rotors?

 

I thought this might be it also, but it doesn't appear to be. There's enough space that it isn't rubbing and clearance for turning, etc.

​​​​​​I'm really at a loss ATM so I'm going to jack up each side and remove the tires and see what I can see..

 

So it turns out you were 110% correct and I am just an idiot. Upon closer inspection there was some rubbing of the bottom of one of the shields against the outer rim of the rotor. This wasn't what I was hearing but it was an issue nonetheless. It was a small piece of plastic that when decelerating scuffed against the ground, but when I lifted the car it looked like it wasn't hanging low enough to scrape. Thanks again for the suggestion. Likely saved my new rotor some serious damage over time.