Rich Dinap

Here's one thread, at least. Try a search on white particles and white dust, as well, and you may get more, but it seems it's an internal piece causing it. http://us.lexusownersclub.com/forums/index...p;hl=white+dust This was a fairly rare issue when I had the problem in Sept 2007 supposedly on 3 other identical problems in the country. They initially replaced the filters but the problem returned. Then they replaced the evaporators twice and problem solved. My cars interior was gutted twice. Lexus regional sent techs to look into the problem so by now they are aware of it. Tell them to Call Lexus in East Hanover NJ and speak to their service and they can tell them the resolution if they can't get info from their regional techs.