The black vent near the windshield(the vents we use to defrost our windshield) is starting to crack on mines and I don't know why . I never took my dash apart or anything like that. It doesn't look like it cracked from sunlight. These are like nice, straight cracks.

I use Meguiars product on my dash, so can't really say I don't protect it. Anyone have this problem or know how to stop further cracks?