Hi,
I just noticed this today, i don't think its ever happened before but...I normally set my headlights always on so whenever i unlock the car, the headlights come on. So today I unlocked the car, the headlights go on and when the headlights come on i hear a small whistling sound. Has this happened to anyone before? Why would this be happening?

 

that my friend, is the xenon warming up

our lights do that

 

thats weird, cuz i've had my car for about 4 months and this is the first time i heard that before. Thanx for the info

 

I hear it too. I love that warming up sound. It makes me feel special. You know, like, short bus special.