My passenger mirror (2001 Ls) is no longer functioning. Probably not all that uncommon, but it is strange as to how is stopped functioning. The dimming is now always dark except for a perfect circle in the middle of it. How is that possible? Why couldn't it break undimmed??!!! It is driving my wife crazy. I checked with the local dealer and got a price of about $500, they thought it was strange too. I cracked that they should fix it free for R&D; we all had a good laugh about that one. I checked an online lexus parts dealer and found the glass itself for $296. Are there other parts that need replaced or is there $200 worth of labor to get it done?