Question about Toyota Sienna
I fixed this problem on my 2004 Sienna. The moisture seems to come in from the top of the headlamp assembly. I generously applied Permatex Super Clear VINYL SEALANT to the seam at the top of the assembly after drying out the moisture by remvoing the bulbs. There are vent at the bottom of the assembly which should be open; there's a liitle foam plug that let's air in so the assembly is not intended to be airtight. There has been no moisture problem for about a year.
Posted on May 12, 2009
I have written a detailed step-by-step tutorial on how to remove your Toyota Sienna headlight and seal the leaky seam: How to Fix Moisture in Headlight Toyota Sienna Share Your Repair
Posted on Dec 25, 2015
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Posted on Jan 02, 2017
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