condensation in taillight (SportCross) - Lexus IS Forum
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post #1 of 7 (permalink) Old 05-09-2013, 07:10 PM Thread Starter
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condensation in taillight (SportCross)

My passenger-side taillight (the big one, with brake/turn/reverse lamps) has had condensation issues off and on for the last several years. I used to notice it one or two days a year, but last year it happened more frequently and for the last few weeks it's been pretty much constant.

I'd really rather not replace the whole taillight assembly if I don't have to. Is there a way to replace just the seal?
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post #2 of 7 (permalink) Old 05-09-2013, 07:30 PM
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The tail lights are most likely like the sedan's; they don't have a butyl seal like the headlights, so you can't just open them by putting them in the oven.

most likely a seal for the bulbs that has rotted away and is letting in the condensation.

Your best bet is to take off the headlights and inspect the rubber seals for the bulbs.
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post #3 of 7 (permalink) Old 05-09-2013, 07:42 PM
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Providing the condensation isn't due to a cracked lense, you can simply repair the headlight. You will have to use a dremel or small cutting wheel to the existing seal so you can remove the lense cover. Make sure not to touch or clean the inside of the lense because you may damage the UV protective layer or scratch it. Black silicone made by Permatex is one option for resealing it. Or a clear silicone adhesive will work. The following links shows how to open them up so you can reseal them.

https://my.is/forums/f221/diy-removin...lights-396040/
https://my.is/forums/f221/diy-black-h...s-pics-432241/

Hope this helps..

edit; I knew someone would beat me Inspection of the socket seals is a good idea but your lense seal may be compromised. Worth it to check the sockets first as mentioned.

'02 IS300 MSM LSD
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post #4 of 7 (permalink) Old 05-09-2013, 07:56 PM
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The harness for all the bulbs which includes the rubber seals is $24.91 on Sewell after our discount. So if you find the seals are dry rotted or cracked this would be ideal to replace and see if the condensation goes away.

81555-53040
REAR TAIL LAMP (TAILLIGHT) SOCKET AND WIRE SUB-ASSEMBLY (RIGHT / PASSENGER SIDE), SPORT CROSS ONLY - WAGON

2002 IS300: OEM Electrical (REAR COMBINATION TAIL LAMP) Replacement Parts

'02 IS300 MSM LSD

Last edited by jasonm4; 05-10-2013 at 06:27 PM. Reason: correction on PN
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post #5 of 7 (permalink) Old 05-10-2013, 06:15 PM Thread Starter
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Thanks, guys. I guess I have multiple options!

Quote:
Originally Posted by jasonm4 View Post
The harness for all the bulbs which includes the rubber seals is $24.91 on Sewell after our discount. So if you find the seals are dry rotted or cracked this would be ideal to replace and see if the condensation goes away.

81555-53030
REAR TAIL LAMP (TAILLIGHT) SOCKET AND WIRE SUB-ASSEMBLY (RIGHT / PASSENGER SIDE), SEDAN ONLY

2002 IS300: OEM Electrical (REAR COMBINATION TAIL LAMP) Replacement Parts
@jasonm4: thanks for the link, very helpful, but just so this thread has the right information I'll note that I have a SportCross so here is my part:
81555-53040
REAR TAIL LAMP (TAILLIGHT) SOCKET AND WIRE SUB-ASSEMBLY (RIGHT / PASSENGER SIDE), SPORT CROSS ONLY - WAGON
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post #6 of 7 (permalink) Old 05-10-2013, 06:23 PM
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If replacing lightbulb assembly doesn't work, I do have a passenger taillight, in the for sale section.

13 J8A FR-S Series 10
02 CW Sportcross rebuild in progress
02 BO Sportcross 2jzgte build in progress
11 SW Tundra DC TRD supercharged

02 MSM L-tuned Sportcross 5 Speed Sold
01 DWP IS300 Sold

Sportcross owners group on facebook

My Story: https://my.is/forums/f219/sportcross-...8/#post7991882


My For Sale: https://my.is/forums/f99/sportcross-s...hifter-438917/
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post #7 of 7 (permalink) Old 05-10-2013, 06:23 PM
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You're welcome and hopefully it's just the socket rubbers that are shot.

I should have known better that I was in the Sportcross forum I edited my Op.

'02 IS300 MSM LSD
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