1. Welcome to Tundras.com!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tundra discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other Tundra owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Definitive 2000-2006 cab-area rain water leak thread

Discussion in '1st Gen Tundras (2000-2006)' started by shifty`, Jul 8, 2020.

  1. Mar 10, 2023 at 2:31 PM
    #31
    BubbaW

    BubbaW Blessed 2 B above Ground

    Joined:
    Aug 19, 2019
    Member:
    #34845
    Messages:
    3,459
    First Name:
    Bubba
    Where Eagles Nest
    Vehicle:
    04 DC LTD 4X4 4.7 V8
    T150 Lover
    Very carefully....

    While there are 1st Gen glass removal youtubes out there, struck out on fixed glass removal.
    Not knowing what year your AC is, I have attached the removal/installation instructions from a 2004 FSM, which should be close or exact for whatever year you have.
    They combined fixed/sliding/power steps, so I highlighted all steps associated with AC.
     

    Attached Files:

    shifty`[OP] and w666 like this.
  2. Mar 10, 2023 at 2:37 PM
    #32
    gzl

    gzl New Member

    Joined:
    Nov 9, 2022
    Member:
    #86372
    Messages:
    3
    Gender:
    Male
    Vehicle:
    2003 Tundra AC SR5 4wd
    Good point on checking the FSM! It’s for a 2003 AC so I reckon it’s the same steps as well.
    Thank you!!

    good news is the bed is going to have a camper shell on so if I do a shoddy job on the paint job, no one will see ;)
     
    BubbaW[QUOTED] likes this.
  3. Mar 10, 2023 at 3:38 PM
    #33
    w666

    w666 D. None of the above

    Joined:
    Dec 17, 2019
    Member:
    #40020
    Messages:
    1,675
    Gender:
    Male
    Maryland
    Vehicle:
    04 Access Cab SR5 V8 4WD
    None yet
    Nice!
     
    Last edited: Mar 10, 2023
  4. Mar 13, 2023 at 1:13 PM
    #34
    nawrly

    nawrly New Member

    Joined:
    Jul 6, 2022
    Member:
    #80332
    Messages:
    7
    Gender:
    Male
    First Name:
    Nic
    Vehicle:
    2001 V8 Access Cab 4x4
    7/6/2022 - just purchased and ready for suggestions!
    Hey all - 2001 access cab w/ the dreaded back seat corner leaks. I sprayed a targeted hose stream into those drainage channels and definitely had water entering the cab. caveat - I have the camper shell on now so can't see the bottom of those drain holes. (camper shell window is fixed, can't slider or pop it down to try to inspect the bottom drain holes). I tried threading weed eater line down and haven't been able to fix it yet. any other ideas on how to clean those channels? cleaning products I should shoot down the hole before trying more weed whacker line? hopefully the rains are almost over in California but don't want this to be an ongoing forever issue.

    I tried to tape of the third brake light while doing this test, but with the shell on, I can only get it ~90% covered from above, not sure if it's somehow contiguous with that drainage/gutter system

    IMG_9944.HEIC.jpg
     
  5. Mar 13, 2023 at 1:34 PM
    #35
    shifty`

    shifty` [OP] We skipped the light fandango

    Joined:
    Jun 20, 2020
    Member:
    #48239
    Messages:
    26,925
    ATL
    Vehicle:
    '06 AC Limited V8/4WD
    (see signature for truck info)
    Brake light (at least on my '06 AC) is not integrated with the roof rack channels, and isn't attached to the window surround on my power slider window. Separate housing for that brake light totally, but it does have a foam gasket you can't buy OEM (only aftermarket) to re-seal the 3rd brake light.

    Good question on 'any good way to clean the channel', the best possible way to clean the channel would be with an extra long Burette brush sorta like this, in the smallest diameter you can get that'll fit into the channel, maybe 1/4" ? Then hit it with a jet of water after to flush it, making sure you have a towel in the cab for drips.

    Look at reply # 27 of this thread. See that water streak? Is that roughly where your water is coming in, from the top of the frame? Or is it along the side, or only visible at the bottom corner?
     
  6. Mar 13, 2023 at 1:40 PM
    #36
    nawrly

    nawrly New Member

    Joined:
    Jul 6, 2022
    Member:
    #80332
    Messages:
    7
    Gender:
    Male
    First Name:
    Nic
    Vehicle:
    2001 V8 Access Cab 4x4
    7/6/2022 - just purchased and ready for suggestions!
    interestingly I don't see any water streaking on the glass (ie reply 27), it's just collecting in the bottom corners in the cab, and if I fold down the armrest and open the velcro flap, can see a few drops coming down the middle. I cleaned the track and rubber all along the base of the sliding window and those drain holes seem to be functioning well... maybe I'll try getting one of those wire brushes and see if it's sturdier than the weed eater line
     
  7. Mar 13, 2023 at 2:44 PM
    #37
    shifty`

    shifty` [OP] We skipped the light fandango

    Joined:
    Jun 20, 2020
    Member:
    #48239
    Messages:
    26,925
    ATL
    Vehicle:
    '06 AC Limited V8/4WD
    (see signature for truck info)
    Wait - it's dripping from the bottom edge of the window, and at the middle, like, below the sliding middle window portion?

    If accurate, thinking about the path water must take to reach the middle of the underside of the window, I can't fathom it's anything up top like the 3rd brake light. That doesn't make any sense.

    Am I correctly reading that you cleaned the slider drains, there's more than one, all the way to the window bottom like this?

    PS - I found the post where @NickB_01TRD did his 3rd brake light leak fix which shows you the guts of that hole since you asked. I feel like he also took some pics when he cleaned the slider drains out for the rear window, but I can't find that. Maybe he can give more details.
     
  8. Mar 13, 2023 at 2:58 PM
    #38
    nawrly

    nawrly New Member

    Joined:
    Jul 6, 2022
    Member:
    #80332
    Messages:
    7
    Gender:
    Male
    First Name:
    Nic
    Vehicle:
    2001 V8 Access Cab 4x4
    7/6/2022 - just purchased and ready for suggestions!
    I honestly don't even see the water leaking from the window/glass, I see it collecting in the bottom corners of the cab by the carpet, as well as through the center back seat/armrest hole/flap thing. when I directed a jet from the hose into the drainage holes from the roof rails, it pretty quickly accumulates inside the cab. so agreed, it's probably not the third brake light. I think it's a clog in the back window surround, I'm just having trouble getting it cleaned/ flushed with the weed wacker line. I ordered some brushes on Amazon and will see if they can do the job any better... meanwhile in California it keeps on raining
     
  9. Mar 13, 2023 at 3:15 PM
    #39
    shifty`

    shifty` [OP] We skipped the light fandango

    Joined:
    Jun 20, 2020
    Member:
    #48239
    Messages:
    26,925
    ATL
    Vehicle:
    '06 AC Limited V8/4WD
    (see signature for truck info)
    Ah - so you're not seeing it coming down the cab wall, then.

    The cab wall is a sandwich, IIRC.

    The 3rd brake light opens up to the inside of that cab wall sandwich, up at the top of the window, and water leaking in there will usually either hit the headliner, or work its way to one or both sides of the cab.

    The cab wall sandwich is crimped where the rear window gets installed, so any leaks there, I believe, can only go to either the cab interior, or outside of the body, but not inside that cab wall sandwich.

    If you can manage to pull back the carpet and trace whether water is coming down the interior cab wall, or weeping out from inside that cab wall sandwich, it may give you a better idea of the origin.

    I don't recommend spraying water directly down into the channel. The window isn't water-tight. You're going to get water inside if you force high powered water into that channel.
     
  10. Mar 13, 2023 at 3:43 PM
    #40
    nawrly

    nawrly New Member

    Joined:
    Jul 6, 2022
    Member:
    #80332
    Messages:
    7
    Gender:
    Male
    First Name:
    Nic
    Vehicle:
    2001 V8 Access Cab 4x4
    7/6/2022 - just purchased and ready for suggestions!
    I was hoping to solve this without taking out the back bench seat so hard to say exactly but does appear to be weeping in along the inside of the cab wall (via peaking through the armrest flap). I sprayed in the channel hole assuming it would test if it was clogged or draining to the exterior as designed. When trying to thread with the weedwacker cord, it didn’t pass enough length to get to the exit drain hole at the bottom of the window so I assumed it was jammed along the way. Or the weed walker cord was too floppy (tried 0.65 blue and 0.8 green). If I need to pull the bench I will, but may try threading the recommended brush first. Thanks for all the feedback! The mystery is baffling
     
  11. Mar 13, 2023 at 3:53 PM
    #41
    shifty`

    shifty` [OP] We skipped the light fandango

    Joined:
    Jun 20, 2020
    Member:
    #48239
    Messages:
    26,925
    ATL
    Vehicle:
    '06 AC Limited V8/4WD
    (see signature for truck info)
    Yeah, when I did mine in post #27, I was able to get finagle weedeater line all the way out and down the bottom hole.
     
  12. Mar 13, 2023 at 5:04 PM
    #42
    BubbaW

    BubbaW Blessed 2 B above Ground

    Joined:
    Aug 19, 2019
    Member:
    #34845
    Messages:
    3,459
    First Name:
    Bubba
    Where Eagles Nest
    Vehicle:
    04 DC LTD 4X4 4.7 V8
    T150 Lover
    While not as prone for water penetration as the 3rd light and window, the back wall air exhauster vents can be a source of penetration. Been awhile but do recall a member post describing their find.

    this is from a 2003 Tundra SR5....

    2003 Tundra SR5.jpg
     
  13. Mar 13, 2023 at 6:08 PM
    #43
    nawrly

    nawrly New Member

    Joined:
    Jul 6, 2022
    Member:
    #80332
    Messages:
    7
    Gender:
    Male
    First Name:
    Nic
    Vehicle:
    2001 V8 Access Cab 4x4
    7/6/2022 - just purchased and ready for suggestions!
    appreciate all the ideas! without pulling out the back seat, I suppose I can't say w/ 100% certainty, but pretty sure I'm seeing some water come in straight down the middle (around where that bronze bolt is between the vents, and then it seems to drain to the lower places (both back corners). I'm going to park it "nose down" in the driveway to try to mitigate wherever happens w/ the rain where I'm at on the coast as a temporary solution.
    long wire brushes should be here in a few days to try to cannulate the whole drainage system open. if that fails, I guess I'll pull the seat and investigate further. next step I guess would be take off the canopy/camper shell and check from the outside? or just give up and bring it to an auto glass place while I go to work... to pay for the auto glass folks to do it.
     
  14. Jun 10, 2023 at 5:05 PM
    #44
    Confused_02_base

    Confused_02_base New Member

    Joined:
    Aug 27, 2021
    Member:
    #67326
    Messages:
    70
    Gender:
    Male
    SoCal
    Vehicle:
    2003 Base V6 - various nicks and dings
    STOCK
    IMG_2166[2].jpg IMG_2171[1].jpg
    Now that summer is here and days are longer\warmer, I can take the shell off. It is leaky and looking nasty where it meets the cab. You can see the water patterns along the rear window. and tackle this problem once and for all. Thanks for the photos.
     
    Last edited: Jun 10, 2023
  15. Jun 10, 2023 at 6:14 PM
    #45
    shifty`

    shifty` [OP] We skipped the light fandango

    Joined:
    Jun 20, 2020
    Member:
    #48239
    Messages:
    26,925
    ATL
    Vehicle:
    '06 AC Limited V8/4WD
    (see signature for truck info)
    Based on what I'm seeing, it may be that the entire rear window needs to be popped out and resealed, honestly.
     
  16. Jun 13, 2023 at 1:24 PM
    #46
    Confused_02_base

    Confused_02_base New Member

    Joined:
    Aug 27, 2021
    Member:
    #67326
    Messages:
    70
    Gender:
    Male
    SoCal
    Vehicle:
    2003 Base V6 - various nicks and dings
    STOCK
    Drip rails also will be redone. Driver's side rear is lifted a good 1/4 inch from its seat. Going to say this is the main source of the water leak. Noticed these tuck under the windshield seal up front. No issue with peeling that back a bit to allow installation? I may be overthinking it just a touch.
     
  17. Apr 18, 2024 at 4:46 AM
    #47
    NickB_01TRD

    NickB_01TRD You don't need less cars, just more driveway.

    Joined:
    Jun 16, 2021
    Member:
    #64346
    Messages:
    2,565
    Gender:
    Male
    First Name:
    Nick
    KY
    Vehicle:
    01 Tundra V8 4X4 AC SR5 TRD
    I replaced these cowl clips about 2 and a half years ago and they have already failed. These were Toyota OEM clips. (Yes I cleaned this area thoroughly after these pics)
    20240417_162716.jpg
    Beware the new clips as the foam seal is junk, every one of the ones I replaced had foam that crumbled when I touched it. You've got to use some type of sealant when redoing these unless someone has found a better, higher quality source for these.

    @shifty` can you update original posting on cowl clips with info to reflect the quality of the new ones?
     
    G_unit3000 and shifty`[OP] like this.
  18. Nov 24, 2024 at 7:55 AM
    #48
    whodatschrome

    whodatschrome New Member

    Joined:
    Sep 13, 2023
    Member:
    #103882
    Messages:
    1,657
    Gender:
    Male
    North of North Plains, Oregon
    Vehicle:
    2000 Tundra 4wd AC, 2004 Tundra AC 2wd to 4wd conversion ABS delete
    lots of dents
    I recently found out that i had a leak in this very spot as well. I didn’t want to spend the time to remove the bed in order to replace the foamy gaskets, so i caulked mine as well. If the problem persists, i’ll just have to deal with removing the bed…which is quick and easy to do, but it takes 3~4 friends to do it.
     
  19. Nov 24, 2024 at 11:21 AM
    #49
    daveeasa

    daveeasa FBC Harness Solutions

    Joined:
    Dec 2, 2020
    Member:
    #55605
    Messages:
    4,163
    Gender:
    Male
    First Name:
    David
    PNW
    Vehicle:
    2002 Tundra SR5 RCLB 4x4, 2005 RC 5MT Prerunner, 2016 Tacoma OR DCSB 6MT
    Can’t just slide the bed back a little on the frame rails?
     
  20. Nov 24, 2024 at 11:56 AM
    #50
    whodatschrome

    whodatschrome New Member

    Joined:
    Sep 13, 2023
    Member:
    #103882
    Messages:
    1,657
    Gender:
    Male
    North of North Plains, Oregon
    Vehicle:
    2000 Tundra 4wd AC, 2004 Tundra AC 2wd to 4wd conversion ABS delete
    lots of dents
    Maybe?…but you’d need about 6” of additional clearance to remove that cabin exhaust vent. I don’t think there’s enough room in the wheel well to do that. Just thinking about it, i suppose there would be if the tires were just simply removed. It’s still a pain to move the bed around by yourself (and i have reinstalled my tundra bed by myself before, and it wasn’t pretty). Maybe the next time i make an order with toyota, i’ll order up new exhaust vent gaskets.
     
    G_unit3000 and daveeasa[QUOTED] like this.
  21. Jan 15, 2025 at 5:32 PM
    #51
    2TunGet1

    2TunGet1 Tundra owner since 2000

    Joined:
    Jul 7, 2023
    Member:
    #99907
    Messages:
    325
    Gender:
    Male
    Vehicle:
    2020 Tundra Limited 4x4 CM QS / 2000 Tundra Limited 4x2 AC Black
    IMG_5291.jpg IMG_5290.jpg


    What do you guys recommend if this rubber/foam liner under the dash is saturated with water? When I lift it up at the edges and squeeze, the foam is totally saturated, although no standing water anywhere. I have leaks all over apparently because it’s on both sides. I have all the carpet ripped out and I’m just going to replace because there’s mold growing on it. I don’t drive this truck all but a a few times a year so I just realized how bad it was. Do those liners need to be ripped out as well to dry out or be replaced? Looks like a total PITA.
     
  22. Jan 15, 2025 at 5:49 PM
    #52
    shifty`

    shifty` [OP] We skipped the light fandango

    Joined:
    Jun 20, 2020
    Member:
    #48239
    Messages:
    26,925
    ATL
    Vehicle:
    '06 AC Limited V8/4WD
    (see signature for truck info)
    I think you need to trace back the source. 1st reply in this post has the usual suspects. But if you have water saturating behind your dash on both sides, there's a solid chance your windshield opening is rotten. Or the last time it was replace it wasn't installed/sealed properly. Or a combo of both.

    But based on the atrocious, irresponsible audio wiring I'm seeing in this picture, I can't rule out you drilling a hole somewhere it's not supposed to be, or similar. You'd need to tell us what all you've done.

    I'm not super clear on where you're seeing water, exactly.
     
  23. Jan 15, 2025 at 6:13 PM
    #53
    2TunGet1

    2TunGet1 Tundra owner since 2000

    Joined:
    Jul 7, 2023
    Member:
    #99907
    Messages:
    325
    Gender:
    Male
    Vehicle:
    2020 Tundra Limited 4x4 CM QS / 2000 Tundra Limited 4x2 AC Black
    The entire foam portion of that rubber mat (underside of it) is saturated with moisture. I’m not seeing any definitive spot that is leaking with standing water or drips.

    I purchased this truck new when I was 19 years old, I’m 43 now. I did a lot of stupid stuff to this truck when I was young and didn’t know better, but I had a good time, lots of fun memories. I can’t remember if the audio guy I hired at the time ran those cables or I did, have no idea. It’s been like this for 25 years so I’d say it had a good run. Focal 3 ways up front in a Qform kickpanels, Phoenix gold Titanium amps and dual subs in a custom enclosure under the rear seats. Nothing has leaked until just the last few years. It’s basically my “beater” truck now and I only drive it once and awhile to haul rocks and what not. My 2020 Tundra is for family outings, vacations/camping. I don’t think the leaks have anything to do with the audio stuff.

    The windshield was replaced a few years back. I noticed this winter, the windshield was dripping everywhere with condensation from the inside. It didn’t look like 1 streaming path of water, just everywhere. I noticed damp carpet near the rear passenger side prior to the windshield being replaced so I’m not sure if the leak from there is causing condensation to form elsewhere and then drip off the windshield from the inside. The truck is not garaged and sits in my driveway 365 days a year out in the elements so if moisture is trapped, I imagine condensation when it heats up during the day and then cold at night would form all over.
     
    Last edited: Jan 15, 2025
  24. Jan 16, 2025 at 4:05 AM
    #54
    NickB_01TRD

    NickB_01TRD You don't need less cars, just more driveway.

    Joined:
    Jun 16, 2021
    Member:
    #64346
    Messages:
    2,565
    Gender:
    Male
    First Name:
    Nick
    KY
    Vehicle:
    01 Tundra V8 4X4 AC SR5 TRD
    I would definitely start here. Unfortunately I think that probably means pulling the glass and inspecting.

    I had safelite replace the windshield in my Lexus and they totally butchered it and I had to take it back a couple times to get them to remove and reinstall the window after my carpet being soaked from a terrible seal job. They told me it didn't have enough urethane on it when it was put in. It's definitely possible that is your issue, or that you have rust in the windshield channel.

    The longer you put this off though the more likely you will get corrosion in your inside fusebox, so I'd start putting a plan together ASAP and/or park it in your garage if you have one.
     
    The Black Mamba likes this.
  25. Jan 16, 2025 at 7:02 AM
    #55
    shifty`

    shifty` [OP] We skipped the light fandango

    Joined:
    Jun 20, 2020
    Member:
    #48239
    Messages:
    26,925
    ATL
    Vehicle:
    '06 AC Limited V8/4WD
    (see signature for truck info)
    Not knocking. Just saying. And I'm glad you didn't take it the wrong way. I worked at an audio/tint shop many moons ago. Let's just say, "I seen some shit" rolling in there. Not nearly as bad as your situation. But if I had a dollar for every dude who drilled thru his firewall, didn't install a grommet, and just ran the cable thru with no drip protection, I'd have enjoyed a free lunch at least once a week in back-then prices. If you trace that fatty power wire up, and it's not going straight thru the metal of the firewall, then it's probably not a potential leak source. But that type of leak does happen.

    Anyway, you just told us a lot. The big things you said that's super helpful to know:
    1. You park outside, always
    2. You had your windshield replaced a few years back
    3. Water is all over up front, everywhere, soaking the foam underlay
    4. You've got condensation on the inside of the windows.
    Here's why those things are important.

    You park outside: First off, If you've never replaced or re-sealed the cowl fastener over the air intake, passenger side, there's a 90% chance you're leaking outside water into your passenger floorboard. This is covered by the "Cowl leak" in the 1st reply of this thread. Second, trucks parked outside and left to sit have issues with leaf litter/garbage buildup in places that let water sit and soak, and that is exactly what helps water sit in nooks and crannies, and typically is what rots out sheet metal around the trim and windows. This is why car covers are super important. You also need to know, if you have the V8, rodents love to get under the intake and nest, chew the shit out of starter and knock sensor wires, and do major damage. Regardless of V6 or V8, they like to nest on top of the gas tank and chew up those lines/fittings/vents, and they can get into your dashboard via the cowl opening where water also comes in.

    You have your windshield replaced recently: NickB already covered this. It sounds like you got screwed, and they didn't seal things properly. OR they cut the windshield out, and in the process they damaged the paint, and now that exposed metal has rusted and your windshield surround is rotten.

    Water all over up front: Two things here. One, leaks are pretty location-specific. If there's water from edge to edge, this screams windshield problems. Two, you need to be aware, there's a problem with these trucks, where any water getting inside will eventually find its way into the in-dash fusebox, and rot it out. This will result in weird electrical gremlins, like ... lights staying on, alarm randomly going off, dash lights acting funny. Like, we have so many examples of it on this forum it's almost silly, pics & pics & pics, it happens a LOT. This is a clear concern in your situation! You need to address this sooner than later.

    Condensation inside the truck: This is the alarm bell most people tend to ignore, the red flag you've got a water-in-the-cabin problem. Condensation can only happen if there's a shitload of humidity up in the air. You can't fog windows, you can't have condensation buildup like that unless the relative humidity (i.e. airborne water level) inside a space is high, typically above 60%. You know what else starts happening when humidity gets above 55%? MILDEW & MOLD. You'll usually see this in the forum of random black spots on places you touch often, like the seat belt, rubber pull handles, steering wheels, leather seats. And once that stuff gets rooted, it's damn near impossible to get rid of. It can lay dormant for years, long after you superficially clean it up, and the first time the humidy jumps above 55-60%, it comes out of dormancy and starts sporing again. The roots grow deep so it's tough to fully kill. Your best bet is cleaning with an anti-mildew formula, then running an ozone machine in the cab for several hours, ideally a few days or weeks apart. Then treat the plastics after every application.

    If it's been more than a couple years since the window was replaced, chances are, whoever did it isn't going to warranty.

    If you want to know if it's the windshield, break of the water hose. Use tape, ideally painters tape (avoid duct tape, sometimes clear packing tape will work, just be careful not to rip paint off when you remove it) and tape your water hose hose to the roof pointed forward at the center of the windshield, and turn it on so it's dumping water over the top of the windshield, then go inside and look for drips. You should see something within 60 seconds. If not, re-aim the hose so it's pointed more toward the driver side. If nothing, aim so it's pointed more towrd the passenger side.

    The results should tell you more. Let us know what you find.
     
  26. Jan 16, 2025 at 10:37 AM
    #56
    whodatschrome

    whodatschrome New Member

    Joined:
    Sep 13, 2023
    Member:
    #103882
    Messages:
    1,657
    Gender:
    Male
    North of North Plains, Oregon
    Vehicle:
    2000 Tundra 4wd AC, 2004 Tundra AC 2wd to 4wd conversion ABS delete
    lots of dents
    I’ve had that insulation soppy wet (for various reasons) on multiple other vehicles that i’ve owned. Normally i remedy the problem during the hot summertime when the water will evaporate fairly quickly. I’ll jam something under the insulation (such as a 2x4 or a long prybar or some survey stakes) to hold the insulation away from the sheetmetal. Then i’ll put a couple fans facing that area. I can usually dry it out in a day or two, but you might have to add multiple days to that during the cold wintertime.
     
  27. Jan 16, 2025 at 5:55 PM
    #57
    2TunGet1

    2TunGet1 Tundra owner since 2000

    Joined:
    Jul 7, 2023
    Member:
    #99907
    Messages:
    325
    Gender:
    Male
    Vehicle:
    2020 Tundra Limited 4x4 CM QS / 2000 Tundra Limited 4x2 AC Black
    Found the leaks!

    Up front using the @shifty` method, I aimed the hose at the middle of the windshield at the top. Went under and observed under the dash on the drivers side. Traced the stream of water up and spotted this hole with water straight pouring out of it. I think it’s the inner fender. Makes sense that water would just stream out that hole because I think that is where all the windshield water drains. Super weird spot. No I didn’t drill a hole here, lol! This must have happened fairly recently because the front never leaked like this. Basically above the fuse box, although the water was streaming down the wall so none of the wiring seemed affected. A lot of water! I’m hoping this is the cause of all the condensation on the inside of the windshield.

    The other leak is at the bottom right corner of the middle section on the back window. Water just immediately infiltrates and pools up and drips down and towards the passenger side through the hollow metal section that the rear seat flanges slip into. Puddling in the corner on the floor of the back passenger side next to the seat.

    So……..what is the best sealant to use on that hole under the dash?

    And as far as the rear window, does it just need to be replaced?

    IMG_5319.jpg IMG_5320.jpg IMG_5321.jpg IMG_5322.jpg
    IMG_5328.jpg
     
  28. Jan 16, 2025 at 7:48 PM
    #58
    shifty`

    shifty` [OP] We skipped the light fandango

    Joined:
    Jun 20, 2020
    Member:
    #48239
    Messages:
    26,925
    ATL
    Vehicle:
    '06 AC Limited V8/4WD
    (see signature for truck info)
    @Professional Hand Model had that same back window leak, there’s a drain back there in that rear slider channel. I swore he posted pics on the 1st page of this thread. I’m 90% sure we also have link in the 1st reply.
     
  29. Jan 17, 2025 at 5:25 PM
    #59
    2TunGet1

    2TunGet1 Tundra owner since 2000

    Joined:
    Jul 7, 2023
    Member:
    #99907
    Messages:
    325
    Gender:
    Male
    Vehicle:
    2020 Tundra Limited 4x4 CM QS / 2000 Tundra Limited 4x2 AC Black
    So I cleaned the weep holes and rubber seal/track out on the rear window. That took care of the clogs that was causing water to pool up in the track and spill over but even though it is draining now, I’m seeing leaking coming from below the track. Does this mean the whole rear window needs to be replaced?

    IMG_5350.jpg
     
  30. Jan 17, 2025 at 5:29 PM
    #60
    shifty`

    shifty` [OP] We skipped the light fandango

    Joined:
    Jun 20, 2020
    Member:
    #48239
    Messages:
    26,925
    ATL
    Vehicle:
    '06 AC Limited V8/4WD
    (see signature for truck info)
    Replaced, no.

    One of our Texas members (IIRC) popped his out, resealed it and reinstalled. After a window shop told him you couldn’t pop the window out without breaking it. I can find links if it helps. That may be what’s needed but I’d need to look at it on a larger screen to understand where it’s coming in. There are a few places it can leak. If the drains up top/outside clog, if the channel drains clog, if the outer seal goes bad.
     

Products Discussed in

To Top