Ok, let me explain it again sorry. I live in Tucson Arizona, gets hot as heck down here. In the morning, it is nice and breezy. When I push the open button the screen will slide down in the morning. In the afternoon it gets blazing hot here, and when I start my car and try to push the open button the screen won't move. You hear the click sound but nothing happens. At night time I go out and it is nice and cool here at night. When I go out at night time around 9, when I start the car and push the open button the screen will slide down again. Any help here will be appreciate. Thanks.