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Old 04-27-2008, 01:04 AM   #1
sas0611
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Default HID - initial burst on turning on

On my 08' with HID headlights, should I be concerned if when they are turned on they seem to surge for a brief instant and then quickly return to normal intensity ? It's almost like they are starting up in high beam mode and then quickly stabilize. Is this some kind of 'lighting up' phenomenon like sodium street lights.

Thanks in advance - was wondering if anyone else has noticed this.
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Old 04-27-2008, 01:08 AM   #2
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Default Re: HID - initial burst on turning on

It is normal.
It starts up bright for a second, dims down, and slowly builds up brightness in a 1-2 minutes. All HIDs do that.

Last edited by ceric; 04-27-2008 at 01:46 AM.
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Old 04-27-2008, 01:32 AM   #3
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Default Re: HID - initial burst on turning on

Remember that HID bulbs don't actually have a filament. Instead, the light comes from an arch of electricity. That initial burst will be different from sustained operation afterward. Think of the startup as a mini lightening strike.

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Old 04-27-2008, 01:34 AM   #4
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Default Re: HID - initial burst on turning on

Just thought I would chime in - mine do it too, if that helps any.

Love the color of those HID lamps
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Old 04-27-2008, 06:35 AM   #5
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Default Re: HID - initial burst on turning on

Yeah, mine too. I assumed it was normal.

Last edited by tmanson; 04-27-2008 at 06:36 AM. Reason: fixing a typo
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Old 04-27-2008, 12:01 PM   #6
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Default Re: HID - initial burst on turning on

Same thing happens on my Chrysler 300C.
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Old 04-27-2008, 01:31 PM   #7
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Default Re: HID - initial burst on turning on

Quote:
Originally Posted by sas0611 View Post
<snip> Is this some kind of 'lighting up' phenomenon like sodium street lights.<snip>
That's it exactly.

Tom
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Old 04-27-2008, 05:55 PM   #8
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Default Re: HID - initial burst on turning on

it could also be the auto leveling mechanism, the auto leveling system goes through an initial check, i think.
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Old 04-27-2008, 08:03 PM   #9
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Default Re: HID - initial burst on turning on

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Originally Posted by statultra View Post
it could also be the auto leveling mechanism, the auto leveling system goes through an initial check, i think.
That doesn't make them flash, just move a bit.

Tom
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