Hi Johndouglas! Yes, window is completly closed. There is no any demage in door. It whistling no matter the windows is closed or not. I found that mirror housing making the problem. When I put a sticking tape over the joint between the base and the movable mirror housing the whistle stops. In authorized garage don't know what to do. In official Citroen database there is a record that whistle on the passenger side is caused by vertical slat on the front window. We changed them on both sides. The problem was solved only on the right side, while on the left side the sound of whistling only changed but still persists...