It probably comes from the front right tire area, but maybe the back right, when going over bumps.
Suspension.
But could be a lot of things. Your coffee cup rolling in the trunk. Doesn’t sound like it’s really attached, whatever it is, so it’s concerning. I’d pull the wheels check things if it was my car.
Ha, yeah that reminds me. Once I had a rattling for a week or so. My boss was riding with me and I mentioned it. He said, you got anything unsecured back there? I immediately remembered the jack I had haphazardly secured about a week or so ago. I felt like an idiot, but at least problem solved.
Thanks for the input. I think I got out anything that could be bouncing or rattling around. That was my first thought since I had a bunch of shit in my trunk and it happens on bumps. I’ll have to take a look, I haven’t been able to find a similar sound online.
Have someone push up and down on the front and back of the vehicle while you lay underneath to locate the sound.