The lights on my 08 did the exact same thing. Over several months the winking and blinking of the driver's side Xenon got worse and worse. Finally, the leveling system started messing up pretty bad - up and down all over the place. The front leveling sensor got replaced, which fixed everything. I remember only one split-second blink in that headlight since the sensor was replaced and the leveling system started working correctly, and it's been several months, now.