I washed my '05 300C, and later that day I noticed water on the inside of the driver's side headlight cover. While driving that night the driver's side headlight (HID) suddenly turned off. I bought a new bulb and installed it, but it still didn't work. Pulled the fuse to confirm that it's working fine, which it does (passenger side parking light works with fuse in, doesn't work with fuse out) so I put the fuse back in. Now I'm exactly where I started, moisture has re-appeared in the cover and still no working low beam on the driver's side. Any idea what else I should check and/or do?