Where are the drainage outlets located on the Passat?
2 Answers
Sunroof drainage outlets: There is one at each of the four corners of the sunroof. Engine compartment drainage hole: The engine compartment drainage hole is located at the rear of the engine compartment, under the lower edge of the windshield, near the air conditioning intake. It houses the wiper motor and wiper mechanism. It is often clogged by leaves, mud, etc. If too much water accumulates, it may flow into the air conditioning intake, so timely unclogging is necessary. Door drainage hole: The door drainage hole is at the very bottom of the door, usually concealed by the door seal and not easily visible, though it can be felt by touch. The seal between the window glass and the seal is not perfect, so rainwater can enter the door interior along the window glass and then drain out through the drainage hole.
Last time I drove my Passat and encountered water leakage on a rainy day, I specifically researched the drainage port locations. There is one drainage hole on each side around the sunroof, right at the end of the tracks. Rainwater flows from there through tubes along the A-pillar and C-pillar down to the underside of the car. There are also small holes at the bottom of the doors, just below the weatherstripping, which allow water to drain out during car washes. Inside the fuel filler flap, you can find two small drainage holes to prevent water ingress and rust. The most hidden one is the air conditioning drainage hole, located near the front passenger footwell, with a small rubber tube leading to the underside of the car. There are also two small holes hidden next to the trunk weatherstripping, mainly to prevent water accumulation under the trunk lid. These holes are particularly prone to clogging, so I use a thin wire to clear them every quarter to avoid water damage to the car.
