I have a 2009 Civic 4 door LX. I purchased the car in January of 2009. Every thing was fine. But in the spring of '09 I noticed that there was a rattle that sounds like its coming from the passenger side front end. It only happens in warm weather (85+). When it gets cooler there is no rattle. Mechanically the car runs fine, but the rattle is annoying. The dealer can't find the problem.