Why is there ice under the feet in the car cabin?
2 Answers
Here are several possible reasons: Sunroof drain hole leakage: Sunroof maintenance mainly involves two aspects: first, clean the rubber seal once a year; second, clear the drainage pipe every two years to check for blockages and apply proper lubrication. Chassis perforation water seepage: The car chassis consists of four parts: the transmission system, running system, steering system, and braking system. If there are holes in the floor panel, it is recommended to go to a repair shop for inspection. Drain pipe blockage: Go to a car wash shop, take out the floor mats, use a vacuum cleaner to suck out most of the water, and alternately place dry towels under the mats to absorb water until they are completely dry.
With over 20 years of driving experience, I've occasionally noticed a thin layer of ice forming under the floor mats in winter, most commonly due to issues with the air conditioning system. When the AC is set to cool or heat, the evaporator produces condensation that should drain outside the vehicle through a drainage tube. However, if this tube is clogged or cracked, water can seep into the corners of the carpet. Combined with low nighttime temperatures, this easily freezes into ice. Another contributing factor could be aging door seal gaskets, allowing water to leak in during rain or snowmelt, pooling and freezing in the footwell area. I always recommend checking if the carpet is damp after parking, using a hairdryer or dry cloth for simple treatment. For severe cases, consult a mechanic to unclog the drain tube or replace the seals to prevent rust and corrosion on the chassis. For long-term prevention, add a waterproof mat and regularly clean the drainage holes before the rainy season.
