if I remember correctly, the process is the same for all cars, what I do is take a Philips screw driver and adjust the gear located behind the headlamp.
Really thanks for your advice! However, i just found out actually there is another adjustment screw hide beneath the light from the IS200 manual in this forum!
Would like to ask what are the values you are using on the alignment of your car? Currently i am running slight all toe in all 4 wheels around (tuned by the tire guy), camber and castor untouched at all...