In our 2004 640 the heater is located under a drawer. Yesterday we decided to do a bit of a tidy up and emptied the drawer. We then noticed that on the left hand side of the drawer the side was badly deformed. It seems that the plastic has melted causing the deformity. To my way of thinking what sort of person builds a drawer with plastic sides above a strong heat source. Does your have a similar problem? I think I am going to make a claim under poor workmanship, design etc.