Where is the drainage hole of BMW 3 Series door?
1 Answers
BMW 3 Series door drainage holes are usually located at the lower part of the door panel. The hazards of clogged drainage holes are as follows: Sunroof drainage hole: If the sunroof drainage hole is clogged, it is easy to cause water accumulation to flow along the roof to the sunroof motor inside the car. Once powered on, the sunroof motor often causes problems such as short circuits or even burning out. Engine compartment drainage hole: Since the engine compartment is very close to the air conditioning intake, bacteria can easily breed in the stuffy compartment and affect the air quality inside the car through the air filter element. In severe cases, it may also flow into the car along the air conditioning intake, causing water accumulation on the floor. Door drainage hole: Due to the low position of the door drainage hole, vehicles that drive on muddy roads for a long time are prone to have the drainage hole blocked by mud. Once the door drainage hole is clogged, water accumulation remaining in the door panel can cause damage to the window regulator, audio system, and central door lock. Fuel tank cap drainage hole: Since the vehicle is used outdoors, sand and dust may accumulate around the fuel tank cap through the gap of the fuel tank cap. If this drainage hole is blocked, it may cause water accumulation in the fuel tank during car washing or rainy weather, leading to fuel tank damage.
