Toyota highlander water leak passenger side

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Hi, have had wet carpets front and back for a while now. I finally removed carpet to the back seat row to expose bare floor. When sitting level and not driving, even in heavy rain, water does not enter. So I drove the vehicle in a pouring rain and whenever I braked, water was seen oozing from the side floor body wall BEHIND the driver's, and to a lesser extent, the passenger seat as well. I removed the floor side plastic trim at the entrance to the back seat row on both sides. When I injected water into the holes in the frame that the molding fit into, with the car FLAT, level and parked, it just drained out the bottom.

Toyota highlander water leak passenger side

The source of the leak turned out to be missing rubber grommet hole plugs under the rear bumper. Water was flowing into the holes and collecting inside the frame of the car, eventually making its way into the cabin. The same principle can also be applied when troubleshooting water leaks on other models of Toyota or Lexus cars, as they often share similar parts and frame design. A water leak can cause corrosion or some serious damage to the electric system, and in my case to the hybrid battery located on the floor under the rear passenger seat. It can also cause mold and bad smell if the water stays on the carpet for too long. The problem was well hidden from plain sight. I tried many of their suggestions, like cleaning sunroof or AC condenser draining tubes, checking doors and roof racks insulation, door trim and windows weather moldings, etc. Months went by, and I kept dealing with wet carpets and kept checking online forums for the latest updates on this problem. At that point, I was willing to try anything in Florida it rains every single day in summer…. Removing the rear bumper cover was quite easy. There will be two screws under the rear door, three more in the wheel wells on each side, and two screws holding each mudflap.

Don't have an air compressor Here's where I learned about how to do it. Hopefully someone has a solution to this problem

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Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Did you had problem with water leaks with your 4th gen Highlander? Yes Votes: 5 No Votes: 27 Total voters 32 Poll closed Dec 3, I had the Highlander ''repaired'' at two dealer for many times, lost car for weeks, they can't find anything and they can't pinpoint the exact location from where the water enter.

Toyota highlander water leak passenger side

If your Toyota Highlander is leaking water, it could mean a few different things are happening. Some water is completely acceptable. It depends on the situation. If you are trying to figure out if your Toyota Highlander is leaking water , the first thing we need to do is determine if you have coolant or water underneath of the vehicle. Coolant is sweet smelling and is typically orange, green, or pink. It might not seem possible to determine the color of the liquid in question, but a paper towel allowed to soak up enough coolant definitely will begin to show pigment.

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I noticed that in my car all three rubber plugs on the left side were missing. I hope my Highlander never develops the same problem!!! Here's where I learned about how to do it. Highlander sunroof drain problem Floor mats in my highlander get soaking wet with every heavy rain. Any other ideas? Also, you are likely going to break some of the push-pin fasteners as they become stuck from the road grime and snap very easily. I have the same exact problem. Are any years more prone than others? You will need them to secure the bumper cover back in place. Did pour in a vinegar solution to help clean out afterwards.

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For a better experience, please enable JavaScript in your browser before proceeding. Guru answered 3 years ago. I have a Highlander which fills with rain on the passenger side. I had just installed the missing plugs and sealed them so they wouldn't fall out again. Used Cars for Sale. After a couple days of rain the smell of mildew was unbearable. BUT, when I put the car into a downward facing slant, with ramps under the back tires and do the same, I reproduce the leakage into the passenger compartment in exactly the same place as seen when driving. So apparently water was entering somewhere in the back and making its way forward when the brakes were pressed or when it was parked on an incline. I appreciate any help you could assist me with. No More Water Leaks!