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07 IS350 with HID/Auto Aim headlights. Ballast is going out on one of the headlights. Any recommendations on replacement and/or repair?
Are you certain its a ballast? More often than not its just the bulb. They show very similar symptoms of failure. If youre uncertain then simply switch the bulb thats going out to the other side and if the problem follows it there then its the bulb. However you seem certain its a ballast. Just replace the ballast if it's bad dont repair it.