Lexus RX400H 2002 | Rain Water Leak

Lexus RX400H 2002 | Rain Water Leak
Dec
17
2021

This Lexus has water leaking from the sunroof, it may be blocked at the bottom, allowing water to overflow.

There is also the possibility that the drainage pipe has split or popped off a connector, we will find out as we go along. The bumper is screwed on, with the screws passing all the way through the bodywork into the boot. This is allowing water ingress and can be fixed with a little sealant.

The rear air vents are leaking because the one-way gate has weakened over time, so rain water is leaking into the boot as it splashes up from the road. These units will need to be replaced.

We would also recommend putting a flexible sealant over the spot welded seams around the tailgate hinges. These are sealed at the factory and painted over, but with age they dry out and crack.

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Up  to a third of the cost of your car was computers, processors and sensors. Delicate  electrical systems hidden under your carpets, which might now be sitting in water. 

 

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Question: "Why is water leaking from my car door?"

Answer: Water is supposed to make its way through and drain out of the bottom of the door. There are two issues that can happen that can cause that water to leak inside your car. The first and most common is that the door membrane or splash barrier is compromised. Usually these are just a sheet of plastic which over time shrinks and pulls away from where it is supposed to be. Some cars have a metal barrier which is sealed in place, and the sealant can perish.

The other issues that can cause a leak is if the drainage holes are blocked, this can cause the door to fill with water and overflow. This doesn't happen very often, but is typically caused when a window gets broken. The window is replaced, but broken glass wasn't cleaned up from inside the door. As dirty rain water filters through the broken glass, over time it deposits dirt and grit until the holes are blocked.

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If you would like to have your car water leak investigated by the professionals, you can find out more on our car water leaks page.

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