I can't think of a reason they'd be knocked out other than cabin pressure. Same reason they added the door jamb reliefs with astro ventilation. My sedan doesn't have astro ventilation so there's no need to equalize pressure.
I'll thumb through the Fisher manual later. Certainly could have been missed by some line workers.
Last edited by cheveslakr; 03-12-2019 at 02:24 AM.
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