On October 2, I found that there was a leak in the storage box on the left side of the trunk of the car. It was estimated that the bottom of the carpet was wet. I didn’t know whether it had been leaking for many years or recently, and I had to do it myself while it was not cold. It hasn’t rained in the past few days during the National Day holiday. Let’s take the time to tear down the car and see what the reason is. If you can’t fix it, you can repair it outside. It’s best if you can fix it. First look at the maintenance manual. I bought it on Taobao for more than ten yuan. It is very helpful to understand the structure. First, remove the lower left interior panel of the trunk, the upper interior panel of the trunk, the trunk lamp, the ceiling, the upper part of the tail door, and the rear roof decoration. The car interior panel is not difficult to disassemble, look at the picture to understand the buckle structure and location. After it’s all torn down, a car wash in the neighborhood will know where the water is leaking. Where to deal with the leak. The water gun found the leakage point as soon as it rushed into the car. In the car entering the top of the car, a total of three leakage points can enter the car along the gap between the sheet metal parts and along the curved roof. The most serious one is the leftmost storage box, and the other two places are not serious. Several suspected positions were ruled out successively, and it was finally determined that the water in the three leakage points all came from the seven installation holes of an ornament at the back of the roof.
The steps of demolition and repair are as follows: the water pipe of the wiper that can be seen at the back of the roof can be connected to the car, but the lower roof of the water pipe is very dry, so this position is excluded first. In addition, the installation of the rear door hinge leads to the car. After a closer look, the installation hole is very dry, and this position is also excluded. Other parts of the roof also looked, skylight drainage holes directly into the rear fender, and roof leakage has nothing to do with the exclusion. There are also installation holes in the luggage rack that will enter the car, and it is dry to touch it with your hands. There are many holes in the tail wing deflector of the tail door, which will leak. If you remove the lower interior trim plate, you can see a leakage point. There are traces on the interior trim board. It is a fixed tail wing screw installation. There are a total of four installation holes. Although it has nothing to do with the leakage in the car, it is also waterproof with 704 silicone. This position is excluded. There is a decoration at the back of the roof with seven holes leading to the car, five are the usual clasps on the door panel, and the other two are screw mounting holes. After the decorative board was removed, I rubbed the lower side. I saw that there was a sealant, which was not bad, and a little 704 glue was applied on it. There was a thin layer of rubber gasket around the five buckle holes. With the car’s vibration buckle wearing loose, the rubber pad aging and cracking, resulting in leakage, all made waterproof. The next day the glue was dry, the community washed the car again, washed for 10 minutes, and poured several buckets of water with buckets, the original several leakage points did not see leakage. It should be fixed. Finally, the trunk carpet was removed and rubbed with the water stored under the hard foam, there was a large area. After hanging for a few days, it was almost impossible to dry.
Finally, it is concluded that the waterproof method of the buckle installation hole of the rear roof decoration is not very reliable, and the rubber gasket less than 0.5 mm thick is sealed by the plastic buckle. Almost every car will leak, but how much.