Do I Need to Open the Drain Holes on a New Car Myself?

1 Answers
JamesLynn
07/29/25 3:01pm
There are many drain holes on a car, and these drain holes usually come with rubber plugs. Generally, these rubber plugs should be removed to facilitate water drainage and prolong the car's lifespan. Below is relevant information about car drain holes: 1. Air Conditioning Drain Hole: This hole drains the condensation water produced when the air conditioning is in use. The drainage outlet is typically located at the bottom of the evaporator box and connected to the chassis via a hose. Therefore, you may notice a puddle of water under the car after the air conditioning has been running for some time. If the drain hole is blocked, water can enter the passenger compartment through the connection, soaking items like floor mats. 2. Engine Compartment Drain Hole: The engine compartment drain holes are usually located on both sides of the front windshield wipers, with one on each side. Since the engine compartment is a relatively open environment, dirty water, leaves, and other debris can flow into it along the windshield. Engineers have designed a water deflector at the rear of the engine compartment, along the lower edge of the windshield, and placed drain holes in this area. 3. Sunroof Drain Hole: A sunroof has become a must-have feature for most car buyers, which necessitates proper drainage measures. There are four drain holes, one in each corner of the sunroof. Due to their location, these drain holes can easily get clogged by leaves and debris. If blocked, rainwater can seep into the car through the edges of the sunroof, potentially wetting the headliner or even causing significant water accumulation inside the cabin.
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