So I washed my 2024 ES350 in the driveway this weekend, and after bringing it back into the garage I found a bolt/screw on the driveway right under where my car was while I was washing it. It looked pretty new so I'm thinking it most likely came off of my car rather than my car picking it up on the road and dropping it while being washed.

I'll most likely bring it to the Dealership to see if they can look at all points where this would have been. I looked at the under-body and didn't see any sagging panels or anything.

Bolt looked exactly like the below.

 

could be just an extra screw laying around from assembly. looks like its one of the ones that holds the underbody shield on or the one that covers the oil filter. i wouldn't worry about it. there's enough redundancy. if anything i'd just reattach it myself. don't bother w/ the dealer.

 

I do the oil changes myself, the clips/bolts I touch aren't anywhere near this size.

I'd check all the bolts myself if I had a lift, but I don't. I have some warranty work I need them to do, so next time I'm there I may have them give it a onceover.

 

yeah unfortunately you showed a stock photo and not the photo of the actual screw so i can't tell the size. but generally that's how the underpan screws look. i did all the grueling oil changes on my ES and transaxle fluid on hybrids etc. the screws tend to look like that.

 

This may be from the flaps on the front of the front wheels.

 

Agree. Looks like one of the screws from underneath the car. When I took off the under-cover shield for the front engine, I saw this kind of screw.

Did you wash underneath the car?

 

Definitely saw this screw when I removed my bumper. I think it may be the front most underbody. Like others said, there's enough redundancy for this particular one iirc