2010-13 Toyota Tundra Loose Windshield Dam – TSB

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Toyota has issued a technical service bulletin for 2010-13 Toyota Tundra trucks where the windshield dam becomes visible. There is no immediate safety concern.

2010-13 Loose Windshield Dam - TSB Excess Showing

Does your 2010-13 Toyota Tundra have some excess windshield stripping showing? Now there is a TSB to address this issue.

The windshield dam loose/visible T-SB-0040-13 is for pickups with this problem. Toyota explains that some of these trucks may exhibit a “condition where a deformed windshield dam, or some weatherstrip may be loose between the A-pillar garnish and windshield glass. Normally, the windshield dam is not visible and is only necessary for production. Over time, the dam adhesive may lose adhesion and deform. There is no functional concern with the windshield sealing and there is no need to replace or reseal the windshield if there are no complaints of water/air leaks.”

This TSB applies to only the models produced BEFORE the production change effective VINs below.

2010-13 Loose Windshield Dam - TSB VINS Effective

Like other TSBs this repair is covered under the Toyota Basic Warranty of 36 months or 36,000 miles whichever comes first. It is also limited to only the repair described below.

The repair process is as follows:
1. Confirm the dam is loose.
2. Remove the front pillar garnish by removing the two claws and two assist grip plugs.
2010-13 Loose Windshield Dam - TSB Removal
3. Using scissors or a utility knife cut the center section of the dam and tuck in the loose ends
2010-13 Loose Windshield Dam - TSB Cut
4. Reassemble the vehicle.
5. Verify that the windshield dam is no longer visible.

With any repair, if you don’t completely comfortable doing it on your own, it is STRONGLY recommended you visit your local Toyota dealership to have this issue taken care of.

Anybody have this happen to them? Is it just annoying or have you noticed anything else?

Filed Under: Tundra Recalls


RSSComments (8)

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  1. LJC says:

    This wouldn’t have anything to do with the annoying rattle I hear from the center of dash where the dash meets the windshield, would it?

    • Tim Esterdahl says:


      I’m not sure. You could get it checked out by saying you wonder if it is related to this TSB. Maybe you can get a free inspection.


    • Brian J says:


      I had that same annoying rattle. Took it in and they removed some sort of retainer clips at the base of the windshield. Fixed the problem. Good luck!

  2. LJC says:

    Thank you Brian J. I’m going to take a look to see if I can resolve it myself–faster that way 🙂

  3. mk says:

    yah, I had the TSB on the retainer clips but didn’t do a darn thing. If it is ONLY happening, the tapping noise, mostly under 45 degrees, it is most likely the outside plastic cowling below wipers hitting the glass. double sided tap all across the plastic cowling after taking it off will fix the annoying when colder out tapping noise. My 2007 and 2010 tundra DC had this annoying tapping when under 45 degrees out all winter long but not my 2012 yet but my 2012 has other annoying noises coming from 2 spots my prior tundra’s did not have issues with.

    I think quality control has been slipping some in terms of plastic fitting pieces, etc.

  4. […] post 2010-13 Toyota Tundra Loose Windshield Dam – TSB appeared first on Tundra Headquarters […]

  5. Gerry says:

    I have a 2012 Tundra and live in Buffalo cold no rattles of any sort. Very quiet

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