Where Are the Drain Holes on the Buick Regal Doors?

[OCarmen]

Buick Regal's drain holes are generally located in areas such as the fuel tank cap, engine compartment, lower part of the door panels, and sunroof. The most prone areas to clogging are the sunroof and engine compartment. Below is relevant knowledge about the locations of the car's drain holes: 1. Air Conditioning Drain Hole: It discharges the condensate water generated during air conditioning use. The moisture outlet is usually located at the lower part of the evaporator box, connected to the chassis via a hose. You may notice a puddle of water under the car after the air conditioning has been running for a while. If the drain hole is blocked, water may enter the passenger side through the connection, soaking items like floor mats. 2. Engine Compartment Drain Hole: Located basically on both sides of the front windshield wipers, usually one on each side. The engine compartment is a relatively open environment, so wastewater and debris can flow into it along the windshield. Engineers have designed a water barrier at the rear of the engine compartment, along the lower edge of the windshield, and placed drain holes in the barrier's location.

[AnnieMarie]

As a veteran Buick Regal owner with a decade of experience, I must emphasize the importance of door drain holes. The front door drains are located at the bottom of the door, specifically beneath those two plastic flaps inside the weatherstrip - just flip them open with your fingers to reveal the small holes. The rear door drains are more concealed, positioned along the lower door edge near the B-pillar. Before rainy seasons, I always clean them using a cloth-wrapped wire. Last year during heavy rains, my neighbor's door accumulated water that nearly damaged the audio module. A crucial reminder: never use toothpicks for unclogging as plastic fragments may break off and remain inside. The Regal's door drains are designed relatively small - if blocked by leaves or debris, accumulated water can corrode window regulator rails, potentially causing window operation issues in severe cases.

[BrookeDella]

I've disassembled nearly a hundred Regal car doors during repairs. The drain holes are essentially rubber plugs about the size of a fingernail located at the bottom of the door panels. The front doors have two drain holes on each side with flip-top designs, while the rear doors each have one flat outlet. Drainage works perfectly when the car is new, but after five years, buildup from car wash foam wax often clogs them. Last week, an owner found water pooling on the floor mats—after removing the door trim, we discovered the water had rusted the speaker magnets. This happens when tree sap seals the drain holes. Here's a quick test: pour water down the window glass. If no water flows out from the bottom of the door panel within 10 seconds, gently poke the hole upward with a thin wire to clear it.

[LaBryce]

Last time, my best friend's Buick Regal had water accumulation in the passenger footwell that reached ankle height, which scared her into calling me for help. Only after checking the manual did we realize the drainage holes were hidden behind the rubber dust strip at the bottom edge of the door—you have to pinch the rubber strip and pull it outward to see them. The plastic channel design is somewhat counterintuitive. I recommend girls use a slender makeup brush handle wrapped with kitchen paper for cleaning, which is much safer than using wire. Actually, water accumulation in car doors not only causes mold but, more critically, can corrode the wiring, leading to a collective failure of the central locking system for all four doors. The repair costs could easily buy you ten designer bags.