Buzzing from dash vents ....

[NineIronUS]

Just wondered if anybody else had this problem and has had it resolved.

When I accelerate from a stop, somewhere in the range of 0-40 mph I almost always hear loud buzzing / rattling sounds from the dash. Pretty sure from having someone else drive and sticking my head on the dash that it is the air vents in the center above the stereo.

I've been to the dealer 3 times and replicated the noise each time for them.

First visit, they agreed it was the center vents. Said some cap at the back of the vents was vibrating against the firewall. Got the vehicle back and it was quiet for a week. Then the noise came back.

Second visit, they say it must be a different noise this time (sounds exactly the same to me). This time they blame a break line rattling against the HVAC and some wiring harness on the transmission. Drive out of the dealership and hear the same noise 4 times on the way back to work.

Third visit, they say the steering shaft has excessive play and that is causing the noise. They are replacing it on Wednesday but I'm skeptical that that would make my vents buzz / rattle?

Any thoughts / ideas? I love my H3 and this is a pretty minor problem in the grand scheme of things but it's pretty loud and kind of embarrassing when I have co-workers in the vehicle.