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SC430 - 2nd Gen (2001-2010)

One headlight intermittently shuts off while driving...

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Old Dec 28, 2009 | 07:58 AM
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Default One headlight intermittently shuts off while driving...

So, my driver's side headlight (low beam) is acting up. The passenger side is not a problem.

Just started about two weeks ago. While driving, the left headlight can suddenly shut off, sometimes more than once during one trip (it happened twice during a 30 minute commute this morning). I flick the **** to turn it off and on, and it reignites.

I have aftermarket HID bulbs, but no problems in the past nine months. Checked the headlight housing itself; seems like nothing is loose.

Diagnosis?





I feel like I'm winking or something...

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Old Dec 28, 2009 | 08:54 AM
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I feel like I'm winking or something... LOL

My son had the same problem in his SC300 with aftermarkets and it turned out to be a bad ground on that side. Redo them or retighten them and you should be good!
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Old Dec 28, 2009 | 09:10 AM
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Originally Posted by farkas
2006 GS430 Red/Cashmere 1992 SC300/1jz 5-Speed
2004 SC430 Silver/Ecru 2007 Audi A4 Avant
1980 Corolla 2Dr 4AG Silvertop 2008 Mazdaspeed3
2002 VW GTI/337 Silver 2002 Toy Highlander
2000 F250 SD TurboDiesel 2000 MR2 Spyder
holy crap. your house must look like a used car lot
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Old Dec 28, 2009 | 09:15 AM
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Originally Posted by Liquid SC
holy crap. your house must look like a used car lot
All Toys and they are all garaged when they are not being driven. It is the Joy of 5 acres and a Big A**ed Garage.... Santa brought me a 2 Pole Lift for Xmas this year too!
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Old Dec 28, 2009 | 09:30 AM
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that's cool. i pictured a suburban home with 2 in the garage, 4 in the driveway, 2 on the street and 2 on the lawn.
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Old Dec 28, 2009 | 09:32 AM
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That would be one well equipted suburban home!

Last edited by farkas; Dec 28, 2009 at 09:36 AM.
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Old Dec 28, 2009 | 10:35 AM
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Originally Posted by farkas
I feel like I'm winking or something... LOL

My son had the same problem in his SC300 with aftermarkets and it turned out to be a bad ground on that side. Redo them or retighten them and you should be good!
But the HID ballast/housing is stock.

Only the bulb is aftermarket.




Is there still a place to tighten other than the bulb?
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Old Dec 28, 2009 | 11:18 AM
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I would still look at the grounds of the ballast.. If it looses connection, it will go out until it is started again.
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Old Dec 28, 2009 | 11:37 AM
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I would still look at the grounds of the ballast.. If it looses connection, it will go out until it is started again.


Ooops did I studder?

Last edited by farkas; Dec 28, 2009 at 02:05 PM.
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Old Dec 28, 2009 | 01:22 PM
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Is there a picture to illustrate the bad ground?
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Old Dec 28, 2009 | 02:04 PM
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Originally Posted by playa3uhh
Is there a picture to illustrate the bad ground?
No Picture for this.... It is a loose wire that may be connected somewhere in the area of the lights ballast Box if not they way the box is mounted on the car itself..It is hard to tell as I am not that familiar with its location, just the basics of how they work.
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Old Dec 28, 2009 | 02:50 PM
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Originally Posted by farkas
That would be one well equipted suburban home!
that would be a well equipped company motor pool. never mind the suburban home
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Old Dec 28, 2009 | 06:32 PM
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Shucks I have a 10 car garage with an elevator lift. Three gas pumps and an oil anlube station I got it for xmas when I was 10. Not much has changed since then I still have the toy and On ly 2 cars
LOL
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Old Jan 1, 2010 | 08:31 PM
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Phil see if there is a TSB for this...some 3GS owners have this issue as well and there is a TSB for it.
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Old Jan 1, 2010 | 09:23 PM
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Originally Posted by 1SICKLEX
Phil see if there is a TSB for this...some 3GS owners have this issue as well and there is a TSB for it.
Got it fixed.

I traded her in...
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