Mary2008

The first Winter after I bought my 2007 RX350 I started noticing white powder on my dashboard. The dealership told me they couldn't find anything wrong with the heating system. I just took it back again (2 years later) and asked them to check it again. The service department told me it was an evaporator problem and that there was no current fix for it but that Lexus was working on it. After reading the other postings, it seems like replacing the evaporator is no sure fix either since the white powder keeps coming back. After a week of not cleaning my dashboard, it has a blanket of white powder on it and on my door rests, etc. Has anyone determined what this white powder is composed of. What are we breathing into our lungs everytime it blows out into our faces?