Recently i've noticed a grinding / metal groaning sound coming from the front engine area of the car when slowing to a stop - it happens whether or not I use the breaks. I took it to get checked out but of course the guys at the dealership couldn't find anything when they drove it. (Still under warranty lol) I'll upload a video here below I finally got it on camera. It doesn't happen all the time but when it does start it'll last for a few months.

The louder noise happens around 5.3 seconds.
https://www.dropbox.com/scl/fi/tu6e19384btbc74qqqtfw/IS500-Grinding-Noise.mov?rlkey=69cx55w9aema45ig0o8wizbtl&st=sijso4v0&dl=0

 

Loose exhaust? Any damage, like you ran over something?

 

No damage that i know of, nothing I can see when looking under the car, it is an aftermarket exhaust though. No accidents on the car either.