How to Deal with Waterlogged Sound Insulation Cotton in the Car?
2 Answers
If the sound insulation cotton in the car chassis gets waterlogged, it needs to be replaced with new sound insulation cotton. Waterlogging in the sound insulation cotton is definitely caused by incomplete sealing of the car body. Check if the sealing strips are aged, broken, or incomplete, leading to poor sealing and water ingress; replace the sealing strips. Inspect whether the waterproof membrane inside the rear door trim panel is damaged. Check if the drainage holes on both sides of the sunroof are blocked. If blocked, rainwater cannot drain through the pipes. Call the 4S store for a comprehensive vehicle inspection and to seal any leaks.
The issue of water getting into the car's soundproofing cotton is quite annoying, and it's best to deal with it early to prevent mold growth. Last time, a similar situation happened in my car. I immediately checked for leaks, inspected the door seals and the area around the sunroof, and temporarily sealed any gaps I found with strong adhesive tape. Then, I tackled the wet cotton—first using old towels to absorb as much moisture as possible, followed by using a household electric fan to blow air for at least 12 hours to speed up drying. If it doesn't dry completely, the soundproofing cotton must be removed and replaced with new material, as residual moisture can attract bacteria and cause odors. The whole process taught me to dry corners thoroughly after washing the car and to avoid parking in waterlogged areas to prevent recurrence. For safety, I recommend ensuring good ventilation inside the car to minimize health risks. If you're not confident in handling it yourself, taking it to a repair shop is a more hassle-free option.
