i also continue to deal with an odor on my 2007 rx 350 we bought it new and dealer said it was cosmoline, makes us sick too.
wish it was just with the moon roof open but it is all the time.
i was told that the cosmoline was put on the parts prior to manufacture and was not removed from the parts that noone can see.
looking for a resolve too.
was told put air on recirculate, fresh air, drive with windows open, it will go away etc,
after 9,000 miles has not gone away.
still looking for help.
just the rx 350.
no problems with our other lexus, different model
.dcj