GS - 3rd Gen (2006-2011) Discussion about the 2006+ model GS300, GS350, GS430, GS450H and GS460

HID Ballast replacement

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Old 10-02-14, 12:41 PM
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pdxsc400
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Default HID Ballast replacement

Hey all, I've done a lot of reading that the dealer will not separate the ballasts from the entire housing. Lame. I ran across these, would they work???

http://www.kbcarstuff.com/d4s-denso-...nso-d4s-rb.htm

They look Almost identical. Anyone feel free to chime in!!! Anyone have their originals off that can compare??
Old 10-02-14, 12:52 PM
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IXI187IXI
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not sure if that will work but this is the oem one i pulled from my headlight a while back

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Old 10-02-14, 02:03 PM
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pdxsc400
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Can you get a closer pic of the housing, front and back? I think I found the part! Hopefully no more trying to buy the whole housing for our flickering problems!
Old 10-02-14, 02:10 PM
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pdxsc400
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Nevermind! It's compatible. I called Denso and the verified that the "Parts No. KDLT003 and DDLT003 are the same part. The Larger number specifies what vehicle they went to.

Lexus HID Headlight Ballast (Inverter Unit/Control Unit Module HID Box/ ECU Transformer)

Part numbers: TOYOTA
85967–52020
39000-78515
3900078515
85967-33030
8596733030
39000-78258
3900078258
85967-51051
8596751051

Will fit:

2006-2009 Lexus GS300 GS350 GS450 GS460
2007-2011 Lexus ES350
2006-2011 Lexus IS250 / IS350
2008-2011 Lexus IS-F
2007-2011 Lexus LS460
2008-2011 Lexus LS600h
2010-2011 Lexus RX350
2010-2011 Lexus RX450h
2006-2010 Lexus SC430
2006-2009 Toyota Avalon
2007-2008 Toyota Solara
2009-2011 Toyota Venza
2006-2009 Toyota Prius
Old 10-02-14, 02:36 PM
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mr3gs300
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yea, they gotta drop the bumper remove head light and just swap em out, had it done like a year ago cause of using those cheap hids, never again
Old 10-02-14, 03:21 PM
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pdxsc400
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My biggest thing is that everything I have read says that we can't get replacement ballasts ONLY. The dealership only sells the whole (expensive) headlight assembly. But we all seem to encounter the flickering headlight issue. So if we need ballasts only, here is a potential solution! I emailed the engineer a pic of that ballast that IXI187IXI posted, and he did some cross referencing. Then... Boom! Looks like we may finally have options!
Old 10-10-14, 12:12 PM
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pdxsc400
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Are people not having the flickering issue anymore??
Old 10-13-14, 01:55 PM
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warandcar
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my lights are flicking or it seems… i haven't been able to drive in front of my car yet… whats the deal with this issue?
Old 10-13-14, 06:51 PM
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Originally Posted by pdxsc400
My biggest thing is that everything I have read says that we can't get replacement ballasts ONLY. The dealership only sells the whole (expensive) headlight assembly. But we all seem to encounter the flickering headlight issue. So if we need ballasts only, here is a potential solution! I emailed the engineer a pic of that ballast that IXI187IXI posted, and he did some cross referencing. Then... Boom! Looks like we may finally have options!
the dealer says a lot of things. may be a known issue, but Toyota doesn't want to do a recall so they will only sell the head light assembly. if the part is removable, it can be changed. it's only a ballast, simple as changing a head light bulb.
Old 10-13-14, 07:05 PM
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pdxsc400
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Originally Posted by mindcrime
the dealer says a lot of things. may be a known issue, but Toyota doesn't want to do a recall so they will only sell the head light assembly. if the part is removable, it can be changed. it's only a ballast, simple as changing a head light bulb.
Everything I have read on here says people have been unable to just by the ballast because Lexus only sells the whole headlight assembly. But I used to work at a local Toyota dealership and am fully aware of the carry over of Toyota and Lexus part #'s. So I called my guys, and he and I did some digging... bingo. No need to buy the whole headlight assembly from Lexus! The above listed parts #'s change over, so we can buy the OEM Denso/Koito ballasts from the link i put up. $120 vs $1600... I know my choice!
Old 10-13-14, 10:43 PM
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let us know how the install goes...
Old 10-14-14, 06:43 AM
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Not sure about the GS, because I just got mine. But that ballast looks identical to the ones on the ISx50. I replaced ballasts twice on my IS, it wasn't easy to access the ballast because of the way the headlight was designed. Other than accessing it, everything is pretty much plug and play. Just make sure it is D4S (picture does show this) and not another variation that may be D2S. Unlikely, but possible.

If the GS headlight assembly allow you to remove and replace the ballast without having to take apart the headlights then you're good to go. The hardest part will probably be taking the bumper off.
Old 10-14-14, 07:50 AM
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Originally Posted by warandcar
let us know how the install goes...
I most definitely will! I will be tackling this next weekend. Shouldn't be too difficult. The valve job on my old Acura TL-S was easy, so I imagine removing the front bumper on this old girl should be a cake walk.
Old 10-14-14, 08:15 AM
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Originally Posted by pdxsc400
Everything I have read on here says people have been unable to just by the ballast because Lexus only sells the whole headlight assembly. But I used to work at a local Toyota dealership and am fully aware of the carry over of Toyota and Lexus part #'s. So I called my guys, and he and I did some digging... bingo. No need to buy the whole headlight assembly from Lexus! The above listed parts #'s change over, so we can buy the OEM Denso/Koito ballasts from the link i put up. $120 vs $1600... I know my choice!

that's why we call them the stealership. what does Toyota Corp actually say? thanks for the info. good luck with the swap.
Old 10-29-14, 10:11 PM
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Originally Posted by pdxsc400
Hey all, I've done a lot of reading that the dealer will not separate the ballasts from the entire housing. Lame. I ran across these, would they work???

http://www.kbcarstuff.com/d4s-denso-...nso-d4s-rb.htm

They look Almost identical. Anyone feel free to chime in!!! Anyone have their originals off that can compare??
My girl has an stock 06 GS 300 with this flickering problem now.

Does that link above link to the correct part number to order to replace the ballast?

Just making sure they GS has the d4s...

I was confused by the list of part numbers in that post a couple below your original post.

Last edited by 355F1; 10-29-14 at 10:22 PM.


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