My 21 Lariat is experiancing a loud dash vibration rattle. Seems to be at its worse when first driving off in the cool morning. Seems to be just right of steering wheel and behind dash. sounds like a plastic connector vibrating. Has anyone experianced this dash noise?

 

Hey there! I can look into your F150's dash rattleconcerns on my end. Will you send us a message with your VIN and dealership info?

 

check 2 things I was able to fix in my 21 lariat. I thought nosies on cooler days were approximate same area as you described.
one was in the little pop off cover on the drivers door where the mirror wires run. They mounted a lil tiny proximity sensor in there. Shoved some butyl rubber in to stop that rattle. Other was directly above the headliner far left corner on the drivers side. Guessing it’s a wire that was not secured and I shoved some more butyl in there and problem went away.
quality control sucks and for what it’s worth, if I couldn’t fix it myself I would rather turn the radio up vs have ford techs repair. Last time ford worked on my rig the owed me a complete repaint job and cracked the mirror.
good luck finding the source!