How to Deal with a Clogged Windshield Drain Hole?
3 Answers
Check if the vehicle's windshield washer fluid reservoir has water to ensure the windshield can be wiped properly; otherwise, it may easily damage the wiper motor. If the washer fluid reservoir has water and the motor is functioning normally but the wipers do not spray water, then the nozzle is likely clogged. Take a paperclip, straighten it, and gently insert it into the nozzle, moving it back and forth. Choose a paperclip with a diameter suitable for the size of the water outlet hole, and avoid using excessive force. Always spray water while wiping the windshield to prevent scratches on the glass.
I've encountered clogged windshield drainage holes several times. It's actually not difficult to deal with, but requires careful operation. The drainage holes are located in the groove beneath the wipers. If left uncleaned for a long time, fallen leaves, dust, and mud can accumulate and block the channels. Water buildup may then backflow into the car, which would be a big headache. When I handle it myself, I first wear gloves to remove visible debris, then use a stiff brush to gently clean along the hole openings. Avoid using overly sharp objects to prevent damaging the car paint. After cleaning, I test the drainage by running water through a soft hose. If severely clogged, a cheap and practical high-pressure air canister (available online) can be used to blow it clear. Remember to check monthly and promptly sweep away leaves after parking under trees - developing this habit saves both hassle and money. During regular maintenance, remind the staff to inspect this area too. Early detection and treatment prevent regrets later when rainy season leaks might short-circuit your car's electrical system.
If the small hole under the windshield gets clogged, a simple cleaning with common household tools will do the trick. Every time I wash my car, I check around the wiper area. If I find leaves stuck, I carefully remove them with chopsticks or a thin stick. If water doesn’t flush it out, pour some warm water to soften the debris in the channel, then use a small spray bottle to rinse it multiple times until the water flows freely. Avoid poking forcefully, as plastic parts can easily get scratched. Failing to clear the blockage promptly can cause water to leak into the engine bay, wetting electronic components, which can be extremely costly to repair. Try not to park under trees overnight, as leaves tend to accumulate. In winter, clean it more frequently, as melting snow and ice can clog it even faster. Though small, this area requires regular maintenance, just like windshield cleaning.
