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Lighting Forum
Angel Eyes, DDEs, lighted rings, Clear Turn Signals, LEDs, Xenon, HID, or Bi-Xenon. If it lights up and you want to discuss it, post here!

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Old 11-15-2014, 10:13 PM   #1
Tippey764
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Xenon Headlight Flickering and Shutting off

Hey guys, I'm trying to figure out whats wrong with my right headlight. While driving around sometimes it will flicker a bit, sometimes even farther it will shut off and then come right back on.

Both bulbs were replaced back in April when i replaced the lenses and cleaned the layer of film off of the projectors to improve light output.

As far as I'm aware these are the original ballasts. My car is a 2002 325xi with 241k, the headlights i'm sure have quite a bit of use under their belts at this point.
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Old 11-15-2014, 10:20 PM   #2
dmarkle
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First thing's first. Switch the bulbs and see if the problem follows the headlight you switched. If it does, it's the bulb. It's $0, so even if the bulbs are new, it's worth doing. You may still have a bad bulb.
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Old 11-16-2014, 09:58 AM   #3
XPGLD
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Check some write ups on the bad tail light ground if switching bulbs doesn't work. The weak ground can throw a lot of stuff off on our cars.
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Old 11-16-2014, 10:16 AM   #4
fiveightandten
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Originally Posted by dmarkle View Post
First thing's first. Switch the bulbs and see if the problem follows the headlight you switched. If it does, it's the bulb. It's $0, so even if the bulbs are new, it's worth doing. You may still have a bad bulb.
This.

One of mine was flickering. I pulled the bulbs to swap them from side to side and found the glass was shattered in one of the bulbs. They weren't that old either.
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Old 11-16-2014, 11:32 AM   #5
Tippey764
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Good thing I kept the old bulbs. Alright i'll take a look at it today and see what happens.
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Old 11-16-2014, 11:36 AM   #6
dmarkle
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Originally Posted by Tippey764 View Post
Good thing I kept the old bulbs. Alright i'll take a look at it today and see what happens.
You don't even need to do that, just swap the bulbs you have. Why introduce another variable into the equation?

Also, you did make absolutely sure that you did not touch the glass of the new bulbs when you installed them, too? Any residual oils from your fingers will coat the glass of the bulb and cause premature failure.
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