Where is the air conditioning drain pipe of Audi A6 located?
2 Answers
The air conditioning drain pipe of the Audi A6 is located below the condenser in the cabin. Once you locate the condenser in the cabin, you can find the drain pipe. Function of the air conditioning drain pipe: The air conditioning drain pipe serves to discharge the water condensed during the heat exchange process when the air conditioner is in use. The evaporator continuously absorbs moisture from the surrounding air, which condenses into water and is expelled through the drain pipe. This is why a puddle of water can often be seen under the car after the air conditioner has been running for a while. Working process of the air conditioning drain pipe: During the refrigeration process of the car air conditioner, condensation water is produced. The drain pipe for this condensation water is located under the chassis. Exposure to mud and accumulated water can lead to blockage of the drain hole, with consequences similar to those of a blocked engine compartment drain hole—water may flow back into the car, causing water accumulation on the floor.
My A6 had an issue with AC water leakage last summer. The drain tube is located right below the front passenger footwell. If you crouch down to look at the undercarriage, near the area behind the front wheels, there's a soft rubber tube about the thickness of a little finger hanging down, roughly 10 cm above the ground. When you run the AC on hot days, this tube drips like a faucet. Last time, my car's carpet got moldy because fallen leaves blocked the tube opening—clearing it with a wire fixed the problem. This spot tends to collect dust, so remind the car wash guys to rinse the tube opening during cleaning, or else it can develop a musty smell. If you notice the front passenger floor is damp, it's definitely this tube acting up again.
