Noticed a rattle coming from cabin early on. Finally isolated it to the EyeSight shroud and rearview mirror wire covers. Any bass or volume at all will cause the plastic to reverberate against the windshield. I tried putting felt under the outer corners of the shroud but it didn't solve it. If you press the bottom of the shroud upwards, the rattle goes away. Caulking along the entire edge to the windshield would probably solve it, but it's not worth the headache and risk of ruining the interior.