What are the effects of water ingress in the BYD S7 cabin carpet?
3 Answers
If the carpet is severely soaked and not properly handled, it will develop a musty odor, affecting driving comfort; the bottom sponge and floor covering will remain damp. Over time, the floor covering and sponge may rot, shortening their service life; accumulated water in the carpet can breed a large number of bacteria, which will fill the cabin air, posing health risks with prolonged inhalation; components under the car may rust, and parts beneath the carpet are not easily detectable. Once rust occurs, if not addressed promptly, it can spread to other areas over time. Here are the treatment methods: Ventilation: If the water ingress is not too severe, remove the floor mats, turn on the air conditioning, set the car to internal circulation, open the doors for ventilation, and use natural airflow to accelerate moisture evaporation, which should speed up the process. Drying and disinfection: After cleaning and drying the carpet, it is best to disinfect the car with specialized disinfectant or alcohol to avoid bacterial hazards. If there is still some lingering odor after treatment, you can spray deodorant in the car or place fruits like oranges or pineapples to gradually eliminate the odor with their fresh fragrance.
I've been driving my BYD S7 for a while, and it's really troublesome when water gets into the cabin carpet. The moisture causes the carpet to become wet and moldy, quickly producing an unpleasant odor, like a musty smell, which is overwhelming as soon as you get in the car. Even worse, water can seep beneath the floor, potentially corroding metal parts and leading to chassis rust. If left unrepaired for a long time, the structural integrity of the undercarriage weakens, making driving unsafe. It also affects electronic components—damp wiring under the carpet can cause short circuits, leading to issues like flickering dashboard lights or malfunctioning air conditioning, disrupting daily driving. I once experienced a small leak from the rear window after rain and ignored the wet carpet, only to find the interior humidity so high that the windshield fogged up when using the heater, making it hard to see the road. My advice: if you notice water ingress, dry it immediately, ventilate the car by opening windows, and visit a repair shop to identify the source—whether it's a faulty door seal or clogged sunroof drainage. Spending a little to fix it early saves a lot of hassle. Don’t delay like I did—it’ll cost more and be harder to repair later.
Speaking from a repair perspective, water ingress into the cabin carpet may seem minor, but its impact is significant. Water can seep into the frame, corroding the floor steel beams. Over time, rust develops, weakening the vehicle's structural integrity, which may cause instability during emergency braking. It also endangers electronic systems—for instance, moisture can short-circuit control modules under the floor, leading to failures in the AC, lights, or airbags, increasing accident risks. The soaked carpet itself can mold and breed bacteria, triggering allergies, especially harmful for families with children. The key issue is that the leak source might be clogged body seams or drainage holes, requiring prompt cleaning and drying. I've seen many owners delay repairs, only to face costs several times higher later. Simply put, upon discovering water ingress, immediately soak up the water, use fans to dry it, then get it inspected to prevent future issues. Keeping the car dry is fundamental to maintenance—don’t lose big by neglecting small things.
