Hello. I have a 2020 X5 where the front kidney grill flaps open only above a set temperature, to allow more cooling air in. And when ever it opens up after a long drive, and when I am parked, I look inside and see a lot of dead bugs and other debris stuck between the fins. How do I clean the fins, since the grill flaps shut after it cools down? Is there a way to open the flaps for a manual cleaning?