The Altezza / IS200 / IS300 Forum

Want to ask forumers and Sifus here,

My HIDs on the left and right have different warm up time. The left side warms up to the stable temperature faster (4300k) the right side takes about 2 minutes and I find it irritating because it remains greenish white for some time. When I first got it, the difference is only slight. Left side take about 12 secs and right side about 20 secs so I didn't care about it.

Can anyone tell me, this problem is ballast problem or bulb?