How to Deal with Water Accumulation in BMW 3 Series Doors?

[SanBryce]

Simply use a small screwdriver to clear the drainage holes under the door seal strip, remove the mud to ensure the drainage holes are unobstructed, and perform regular maintenance to prevent water accumulation. All vehicles are equipped with drainage valves at the lowest edge of the doors when they leave the factory. This means that designers anticipated the possibility of water entering the doors during the initial design phase. Most doors are equipped with three drainage valves. Under normal circumstances, the drainage valves automatically open when the door is closed due to the pressure, serving the primary function of automatic water drainage.