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I have a 2005 Lexus IS300 and I noticed water leaking on the passenger side every time I turn the heater on and it's only done this sence it started raining here in Oregon how do I fix this?its leaking from the white box under the glove box on dripping water from below the blower.please help I can't afford to take it to a shop.

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  • Cars & Trucks Master
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Don't drive the vehicle in this condition. Interior water leaks can damage vital components such as the ECU.
Check the heater matrix, which is situated in the centre of the interior of the car, up behind the dashboard, roughly behind where the stereo is located. It is surrounded by block, plastic shields, which have to be removed to get to it.
If this heater matrix is leaking, then you will have to replace it ASAP, or otherwise risk overheating, or flooding expensive and critical components within the vehicle.

If it only leaks with the heater on and air-con off, then the heater matrix is your likely suspect.
If you have a leak with the air-con on only, then check your air-conditioning evaporator unit's drain pipe for security and for any blockages.

Posted on Nov 07, 2012

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Posted on Jan 02, 2017

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SOURCE: 2001 VW Jetta Leaking Water

Th cowling let in fresh air for the heateer and defroster, Their is a drain in the bottom of the cowling or heater ductwork which allows the water to escape before going into the car. I woudl gues that the drain is stopped up..

Posted on Dec 28, 2008

  • 1861 Answers

SOURCE: water leak on fwd passenger side after every rain storm

If your car has a sunroof, there are drains from the front corners of the sunroof, and they drain down the sides of the windshield pillars, and then empty out on the ground.

What I would do is open the surnroof, and pour water into the front corners, and then oobserve where the water drains out. If you have a difference in water drainage between the left and the right sides, I would think that you may have loose sunroof drain. They commonly come loose at the sunroof corners. This will allow the water to pass down the windshield pillar, and onto the floor.

Also, I would check the condensate drain tube for blockage. Pull back the carpet, under the glove box, and fins a black hose that pokes thru the firewall. Pull it out, and see if it is blocked internally. If this tube is clogged, water will build up in the heater box, as the black tube is the drain for the heater box.

One of the two above solutions will cure your problem. I see both quite often.

Thanks for choosing FixYa for assistance.

Posted on Mar 17, 2009

pdbaker6
  • 70 Answers

SOURCE: Water leaking from under the glove box

under the cowl grille where your wiper arms are located is a cabin air filter usually water leaks in from there stick a dollar bill between door and weatherstrip close door and check for slight tension. if bill pulls out without any pressure at all, it could very well be there. make sure you go up down and all around the door

Posted on Jun 22, 2009

  • 83 Answers

SOURCE: 2003 impala leaks from under glove box

If you want to know the where the water is coming from, water is entering from the passenger side front cowl. ( the vent below the windshield that sucks the air in for your a/c and heat) there is a recall where chevy installs a plate under the cowl and diverts water out. There is your answer.
David Borysowski (GM mechanic for over 20 yrs)
EMAIL: IFIXEM66@YAHOO.COM\
PS feel free to email me and thank me. Lol

Posted on Jul 22, 2009

  • 80 Answers

SOURCE: water is leaking from under glove compartment

water dripping from under the glove box area is usally a sign of water in the heating ducts. water runs down the windshield and goes under the cowel, then instead of draining, it some how enters the air intake for your heating system. Take off your wipers, and remove your cowel, you will be able to see the air intake (on the passangers side) and the reason why the water is being directed into it.

Posted on Sep 28, 2009

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