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Discussion Starter #1
My right headlamp on my '00 TT is intermittent--goes off, then when I turn off lights, will come back off. Sporadic.

The yellow sticker inside the hood, over the headlamp, says "sae xenon."

1. I'm assuming these lamps are xenon, even though the parts store gave me a halogen replacement bulb. Correct?

2. How the heck do I replace this or do I have to take it to the shop like the manual suggests? If the shop, major cost????

Thanks so much.
 

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Your car was available with either Halogen (H1) or HID headlights. With a yellow sticker stating "Xenon", I would say you have the Xenon lights as well.

Your issue will take some troubleshooting to find the problem. Easiest thing to do first is to swap bulbs from headlight to headlight. See if the problem sticks with the bulb, or if its still the same headlight with the problem, this will eliminate or verify the bulb being the issue. If the same headlight with a different bulb still has the issue, its something to do with the ballast or ignitor. Replacing either of these will require removal of the headlight from the car, replacing the ballast or ignitor is pretty easy, as long as you get the right parts.

Do the bulb swap test, being carefull to have the lights OFF when you're near then, HID operates at high voltage! The bulb connectors twist-lock onto the bulbs, they only turn one way then pull off the bulb. You can then unlock the bulb retainer ring, which twist-locks onto the projector, comes off the same way as the bulb connector. Certain vehicles require removal of the headlight to change a bulb, I am not sure if this is needed on the TT or not.

With all that said, give the swap a try... post back once you do with the result. If its a ballast problem, I will help you through it so you dont have to take it to the dealer. HID parts at the dealer are VERY expensive (try around $200 USD for ONE BULB!) If it IS a bad bulb, I can get you a new PAIR for $70 USD, always replace HID bulbs in pairs for best results and a match. If its a bad ballast, figure around $100 USD for the parts.
 

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Discussion Starter #3
Thanks!

Thanks for your insight. I'll let you know what I find out. For now, it has gone back to being fine. Ordered a bulb already from autohausaz, but replacing both makes sense. Have a friend whose daughter had similar probs.
 

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Left headlamp doesnt turn on

can anyone tell me why sometimes my left xenon doesnt turn on?I have changed te light bulb,D2S-H1,the balast and still doesnt work,only sometimes...and the left headlamp is doing same strange noise..does any of you experience any of these?
 
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