The dash noise in the Maverick has been solved , removed the a pillar on the rt side to install dash cam wiring, after reinstall rattling noise was gone , hopefully this is a permanent fix.
Mine would come and go sometimes but was mostly there all the time. I removed the A Pillar multiple times trying to fix it. Hopefully yours was a different rattle, as mine was only fixed when my Windshield was replaced due to a rock crack.