What are the causes of water accumulation in the rear seat of a vehicle?
2 Answers
There are many reasons for water accumulation in the rear seat of a vehicle. The following is an introduction to the causes and solutions for water accumulation in the rear seat: 1. Vehicle malfunction: The air conditioning drain pipe is damaged or blocked, directly draining water into the vehicle interior. 2. Sunroof malfunction: The vehicle's sunroof is leaking. 3. Door malfunction: The vehicle's door sealing is poor, or the door panel is damaged. 4. Human factors: Water accumulation in the rear seat must be cleaned up in time, otherwise it will produce a musty smell, affecting the air quality inside the vehicle. 5. Solutions: If it is caused by human factors, it can be wiped clean in time, which will not have a significant impact on the vehicle. If the rear seat is flooded due to a leaking sunroof, the sealing strip of the vehicle's sunroof can be checked. If it is aged or damaged, it can be replaced or repaired in time.
My old car has water accumulation in the rear seats, and I've checked for leaks several times. The most common issue is aging door seals, where water seeps in through the door panel gaps during heavy rain. Another problem is deformed trunk seal strips, causing water to flow backward during car washes. A more hidden issue is clogged sunroof drainage holes, where rainwater flows down the A-pillar into the carpet's lower layer. In summer, if the air conditioner's condensate drain pipe comes loose, it can also wet the floor mat. Last time, I found that the underbody sealant had cracked, and water splashed up from the chassis gaps when driving through puddles. Remember to press a tissue against the door's lower seal and have someone spray water for the most direct test.
