I was wondering if i have factory HIDs if my came equipped with a factory xenon headlights...I was looking at some replacement bulbs but i only want to install them if it is as easy as removing the old bulb and installing the new one here is a link to the bulbs I was looking at NOTTOŽ SE - Factory HID Replacement Bulbs - 2002 Audi A4 Factory HID Replacement NottoŽ Bulbs & Kits

Thank You

 

Yes, if your A4 came equipped with factory Xenons, then this would be a simple swap of the bulb. I assume you're thinking of doing this just for aesthetic reasons, like you want a more bluish tint?

Xenon = HID. Interesting article on wikipedia.

 

when u turn on your lights do they turn on and tend to get brighter over say the next 10 seconds. If so u have hids.