Empty / dull rattle vibration from windshield / camera or mirror area?

[emerica243]

Looking to see if anyone came across this yet. Around 35-40mph at 1500 rpms there's this dull sounding vibration I can't exactly find near the camera/mirror area. Sounds like vibration coming up through the windshield glass and into that mirror area.

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[MT-Taco]

Check your engine splash guards?
https://www.tacoma4g.com/forum/threads/strange-annoying-rattling-above-30mph.12925/