at the beginning I thought I need to change the ballast.
So, I called a Lexus dealer and asked them to make sure before I buy one. They said that it may not coming from the ballast. The ballast is expensive to change it. They said maybe its from the bulb itself. The guy over there told me if the xenon HID broken, it will work when you turn it on for while and then it will go off.
ok so what you do is switch the bulbs and see if the left one still goes out.... I have HID's on my WRX and one bulb broke however it was still working, but not the same color, like yellowish.. so its possible that its only a bulb
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