Why Do 4S Shops Urge to Replace Sound Insulation Cotton?
2 Answers
4S shops may urge to replace sound insulation cotton because they have relevant promotions with favorable prices, and the car owner happens to have issues with the sound insulation cotton, hence the urgency for replacement. Below is relevant information about automotive sound insulation cotton: 1. Advantages of automotive sound insulation cotton: Reduces and effectively alleviates metal fatigue in the chassis, extending the vehicle's service life. Provides excellent waterproof performance, preventing sheet metal corrosion. 2. Disadvantages of automotive sound insulation cotton: The raw material for sound insulation cotton is made from asbestos. Asbestos is highly harmful to human health because its fibers are very fine, making it easier to inhale and trigger a series of lung diseases. Moreover, it has a certain incubation period, which can manifest through long-term accumulation, potentially lasting ten to twenty years.
Having driven for over 20 years, I've noticed that 4S shops frequently recommend replacing sound insulation cotton mainly because it's prone to aging and mold growth, especially in humid climates. Once mold develops, it can release unpleasant odors or even harmful gases, affecting respiratory health. For instance, my previous car always had a musty smell inside, which disappeared after replacement, making the air much fresher. Additionally, damaged sound insulation cotton may cause sound leakage, reducing driving comfort. From a safety perspective, long-term neglect can lead to dirt accumulation, increasing allergy risks. I think their reminders are well-intentioned, but we should assess whether replacement is truly necessary to avoid being misled by overselling. It's best to inspect it during regular maintenance and address it only if it feels spongy or emits odors.
