Side view mirrors whistle

[Tkekich]

I was at the dealer for an oil change and saw this. But of course nobody knows what the fins are doing there. This is probably the fix for the whistle. I asked the parts department and they don't know shit. He actually asked me if I had a Bronco Sport. I'm going to schedule it for service and see if I can get them ordered.

I am able to confirm that these darts were in fact added for mirror whistle.

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[cpmartin1999]

Have had my BB A51 4D 2.7 for a week now and still love it. But there is one problem that is annoying the snot out of me...
My side view mirrors ‘whistle’ at speeds greater than 50mph. The faster the louder the whistle. If I collapse the mirror or simply put my hand on the outer lower corner it goes away. The issue is where the plastic halves of the mirror housing come together. I’ve put a piece of electrical tape on it and that makes it go away also but that’s clearly not a long term fix. Will have the dealer check it out.
Anyone else having this issue?

yes heard of it, luckily mine only whistle ocassionally and not too bad,