Question about Lexus RX 300

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I have had the car in two different shops. I have had the sunroof checked and had that fixed. I thought that was the problem, but next rain again the floorboards are soaked. I have had the car for six years and it has just started leaking. I can not figure out where the leak is coming from and neither could the two shops I TOOK IT TO. Any suggestions?

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  • brownbunny55 Feb 07, 2010

    Thanks for your advice. I am going to try myself to run the water and see what happens. Supposedly the second place I took it to said there was a clog in the sunroof drain, but he said that he had unblocked it, and supposedly fixed it. But it rained two days ago and the car floor is soaked again. Any other suggestions?

  • brownbunny55 Feb 07, 2010

    I am in the processing of checking the solution out, but it does make sense.

    Thank you!

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Hi, I am not sure what procedures the 2 shops took to elvaluate the cause for water wetting the floors, but if you open your sunroof you should see a hole at each corner. These holes are connected to drain tube, and clog, causing water to run into the vehicle. Sometimes in rare cases the drain tubes can also come loose. When the fronts are loose water runs over to the top of the windshield and then down the INNER door seal (not the seal you can see from outside the car) before finally dripping near the speaker and onto the carpet.
The fix is to run a wire thru the holes to free up any blockage and/or use a compressor to blow out the holes to remove blockage.Where safety goggles when performing this procedure.
You can also use a garden hose or a glass of water to simulate the rain,and view where the leak enters the vehicle. This is a very common cause for water entering the vehicle. I am assuming the door seals are doing their job keeping water out,and the 2 shops most likely confirmed this?

Posted on Feb 07, 2010

  • GetMeOttaHere Feb 07, 2010

    No other suggestions at the moment. I don't know how well they "cleaned the drain", but the drain hose may also be loose. If this is the cae, it will require the interior to be disassembled and is a big job. Start with the easy procrdure first, then take it from there.

  • GetMeOttaHere Feb 07, 2010

    Your welcome. Thanks for using Fixya.

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