My headlight lens started to accumulate fog mostly during winter weather or rainy season, never have any accident nor bump on it, dealer said not covered by extended warranty so if I want they can replace with a new ones for more or less $2,000.00 So annoying that it keeps coming back. I've tried several remedies, and it will clear for a moment then come back again. I tried my best to keep my car in mint condition, even hooked up a 19 inch wheels to look good, but now that winter is over, I can't put back my new wheels because the headlights look a weeping cow.