Automotive Service Excellence (ASE) Air Conditioner Certification 2025 – 400 Free Practice Questions to Pass the Exam

A wet floor and a slimy film on the windows inside a vehicle can be attributed to the presence of moisture and fluid accumulation within the passenger compartment. A leaking heater core is a likely cause of these symptoms. When the heater core leaks, it allows the engine coolant to seep into the vehicle's interior, leading to wetness on the floor mats. Additionally, this coolant can create a slimy residue on the windows due to its chemical properties.

The presence of fluids like engine coolant on the interior surfaces also explains why a slimy film might develop, especially in areas that do not dry quickly. This phenomenon can occur more prominently in cooler temperatures, where condensation might further trap moisture, creating an even more pronounced film on the windows.

In contrast, while a clogged evaporator drain can also lead to moisture build-up and wet carpets, it typically does not create a slimy film, as the water involved comes from condensation due to the air conditioning process. A faulty AC compressor may lead to less efficient cooling or failure of the AC system, but it does not directly cause wet floors or slime. Lastly, a coolant leak from the radiator, while causing fluid loss, would not typically result in the specific symptoms seen without a direct path into the cabin, like