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Thread: moonroof construction

  1. #1
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    moonroof construction

    Hi,
    I've got a question about a moonroof's drainage construction.
    In my Hyundai Elantra, it seems that the moonroof is designed to have leaks, but there are drain pipes that drains the water... is this design normal on other cars? I thought they'd make it watertight...

    one major problem i have with this design is that, when i take the car to a high-powered touch-free car wash, the water pressure is too high such that it's forcing water into the moonroof drains... the drains can't take that much water and somehow the water is leaking from the READING LIGHT SWITCHES... anyone else had that problem before? i tried taking it back to dealer but they said it's no problem.. i just can't understand why would the drainage be connected with the electrical conduit....

    Thanks

  2. #2
    Join Date
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    well my guess is that the over flow of water that can't get out the drain leaks into a support in the unibody structure of the roof. I would also guess that this particular support is connected to where your reading light switches are and that they are lower than the drain. So the overflow is just following gravity and ends up in your switches (which are not totally water tight).
    Power, whether measured as HP, PS, or KW is what accelerates cars and gets it up to top speed. Power also determines how far you take a wall when you hit it
    Engine torque is an illusion.

  3. #3
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    The moonroof is water tight on my IS250... I don't see why they wouldn't make it water tight; it doesn't make much sense.
    - IS250fied -

  4. #4
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    Have you talked to other Hyundai owners about the problem in their cars?

  5. #5
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    i had an '87 bmw 325 which had drains for the sunroof... the drain piping was clogged by some debris and the thing overflowed into the footwell of the rear passenger side. that was not a pretty smell, nor a lot of fun to clean the carpets.
    Honor. Courage. Commitment. Etcetera.

  6. #6
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    Quote Originally Posted by woodstock827
    one major problem i have with this design is that, when i take the car to a high-powered touch-free car wash, the water pressure is too high such that it's forcing water into the moonroof drains... the drains can't take that much water and somehow the water is leaking from the READING LIGHT SWITCHES... anyone else had that problem before? i tried taking it back to dealer but they said it's no problem.. i just can't understand why would the drainage be connected with the electrical conduit....
    Don't use a high-powered touch free car wash. Problem solved.

  7. #7
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    Quote Originally Posted by h00t_h00t
    Don't use a high-powered touch free car wash. Problem solved.
    Or don't buy a hyundai...

  8. #8
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    Quote Originally Posted by pimento
    Or don't buy a hyundai...
    that would solve a lot of problems
    Andreas Preuninger, Manager of Porsche High Performance Cars: "Grandmas can use paddles. They aren't challenging."

  9. #9
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    actually this is the only problem i've had with my hyundai so far... it's not that bad a problem.. just have to go to a less powered touch-free car wash.. :P
    i only find one gas station that gives me this problem.. =/

  10. #10
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    Hyundais aren't that unreliable, they are just a little dull

    The moon roof drain probably wasn't designed for that much water.

  11. #11
    Join Date
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    Most if not all cars have drain pipes, it's easier to have drains than make the sunroof watertight.

    fa22-raptor, your roof most likely also has drains pipes, you just can't see them that easy.

    Click this to get google of: sunroof drain pipe is250
    "Racing improves the breed" ~Sochiro Honda

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