Where are the drainage holes on the BMW X4?
2 Answers
The sunroof drainage holes of the BMW X4 are located at the A-pillar and C-pillar positions of the car. In addition, there are also air conditioning drainage holes, engine compartment drainage holes, door drainage holes, fuel tank drainage holes, and exhaust pipe drainage holes on the vehicle. Location of air conditioning drainage holes: The air conditioning drainage holes are generally located under the front passenger seat on the chassis of the car, where a hose directs the water from the air conditioning system to the ground. Location of engine compartment drainage holes: The engine compartment drainage holes are located on both sides of the windshield wipers, guiding rainwater out through the drainage channels on either side of the compartment. Location of door drainage holes: The door drainage holes are located at the bottom of the door panels. Typically, each door has two drainage holes to prevent rainwater from accumulating if one becomes clogged. Location of fuel tank drainage holes: The fuel tank drainage holes are inside the fuel cap, designed to drain any residual liquids left during refueling.
Last time my X4's sunroof leaked, it was due to clogged drainage holes—those at all four corners need special attention. Hidden beneath the windshield are drainage ports, where fallen leaves most easily block; use an air gun to blow them clear during car washes. The sunroof tracks connect via hoses at each corner leading behind the wheels—a thin wire can unclog these. The trunk’s water channel sits near the license plate lights; feel behind the rubber seal with your fingers to locate the holes. Drainage slots on either side of the rear window tend to accumulate mud; flushing them with a syringe works. Remember to clear these small openings before heavy rains, or soaked carpets could cost thousands to fix. I’ve made it a habit now: every month, I lift the sunroof to wipe the tracks with a damp cloth and check drainage efficiency while at it.
