Windshield Wiper Fluid Not Coming Out: Causes And Fixes

Have you ever had a situation where the windshield wiper fluid not coming out? The time to run out of wiper fluid is never a good time. The last thing you want to do is pull up to the curb with streaks of dirt streaming down your windshield after traveling for hours and approaching your destination.

The windshield washer system is incredibly trustworthy and rarely malfunctions. But when it does, it’s crucial to understand how to handle it. The wiper fluid wouldn’t spray for a number of reasons, which I’ll go over in this article.

Reasons Why Windshield Wiper Fluid Not Coming Out?

There are numerous possible causes for why your windshield washer fluid won’t drain. The washer fluid reservoir must first be filled and the washer fluid must not be frozen. After refilling, if no fluid is flowing out, you may have a clogged nozzle, blown fuse, or a damaged pump that needs to be replaced. Read each of the reasons listed below.

1. Fluid Storage Tank Is Empty

Since many people frequently overlook their fluid level, this is the first item to check if your windshield washer fluid won’t drain.

The clear reservoir is typically found at the rear of the engine bay and has a brightly colored plastic top with an engraved image of a windshield.
Check your owner’s manual if you can’t find it. Make sure to check it as well. Your reservoir may be empty due to a human error, a leak in the washer hose, or the reservoir itself.

2. Damaged Hose

If you looked closely, you would see a tiny rubber line connecting the washer pump’s nozzle to the ground. Due to aging and the effects of freezing washer fluid, this rubber hose could degrade at any time.

Therefore, it is advised that automobile owners who have a failing washer pump inspect this tiny hose. You might start by starting the washer pump and attempting to park the car for close to twenty minutes. Then, check to see whether the hose appears broken by looking behind the hood.

3. Washer Pump Fuse Blown

A fuse protects the electrical components of your car’s accessories to stop short circuits and electrical overload.

You would experience the windshield wiper fluid not dispensing from the nozzles if the wiper fuse blew.

It takes just a few minutes to swap out a blown wiper fuse.

4. Obstructed Nozzle

The last stop on the journey for your washer fluid is the nozzle. It may quickly become clogged or broken because of its tiny apertures. If the stream of fluid coming from the nozzles is uneven or decreases, the nozzles are probably clogged.

It is obvious when your nozzles are about to fail or have already failed when the fluid is forced out the back end of the nozzle when they are entirely clogged. If it has gotten that far, it is crucial to replace the nozzle rather than ignore the warning indicators.

5. A Cold Climate

If you notice that your wiper fluid isn’t spraying in cold weather, the fluid may have frozen. The wiper fluid is a solvent that contains water, and water freezes at 32 degrees Fahrenheit. But there are some fluids that can resist temperatures as low as –20 °F. However, you might need to warm up the automobile if you discover that the windshield wiper fluid is frozen and not releasing because of the cold.

6. Electricity Issues

There may be a number of underlying electrical problems that stop the washer fluid from dispensing. The windshield washer pump may not receive any electricity from the car, which would explain why no fluid is discharged. To determine whether the car’s electrical system is to blame for the washer pump malfunctioning, it would be wise to enlist the help of an expert.

In addition to these, if the washer fluid is not draining properly, a new washer pump may be required. Due to the wide range of types available, changing the car’s washer pump could be quite difficult.

How Do We Fix The Problems?

For Mercedes and other automobiles, there are several solutions to resolve the issue of your windshield wiper fluid not dispensing. The steps are as follows:

1. Identifying The Issue

It’s best to first identify the cause of any issue before trying to remedy it. Find the pump’s activation button, press it, and then listen for a sound. If you aren’t hearing anything, there might be an electrical problem. In addition, you need to see if there is any fluid left in the fluid reservoir.

Open the car’s hood, then flash your work light inside to check if anything is inside. You should try to spot a damaged hose if these two don’t seem to be the issue.

Check for leaks or breaks in the tiny hose that is found attached to the nozzle.

2. Fill Up Empty Tank Containers

To fill the tanks, get a suitable windshield washer fluid from the store. These windshield fluids are offered by numerous auto retailers, both online and offline. Open the hood of your car and loosen the reservoir cap by rotating it anticlockwise. Please be aware that each car has a different position for the tank.

To find where yours is, you can consult the owner’s manual for your car. Fill the tank to the fill line by emphasizing getting the fluid content there. If you’re concerned about spilling the liquid, use a funnel.

It would be great if you purchased fluids that can tolerate chilly temperatures during the winter. By taking such activity, you may prevent the windshield wiper fluid from freezing in the low temperatures and stopping from spraying. Once the tank is full, cover it and make sure you never leave it open as this could result in fluid spilling. The washer pump can now be tested to see if it functions.

3. Taking Care Of The Nozzles

A clogged nozzle can cause the pump to malfunction, as was already mentioned. Therefore, flushing it out by removing debris with a safety pin would be helpful. To make the nozzle “free,” make sure to remove extra dirt. To clean them, you can also get the hose unplugged and empty the tank.

Rinse away the debris within the tank with some fresh water after adding it. After that, disconnect the hoses from the nozzles and blast compressed air through them to clear any obstructions to fluid passage.

4. Tests Of The Electrical Connections

The fuse for the windshield washer pump is located under the hood of the car. If you notice that the wiper fluid is not coming out, you can get the fuse examined. Check the reading with a multimeter set below 1 ohm. By doing so, you can determine whether the washer pump’s fuse has “blown.”

You can also unhook the wire connector for the pump and check the fuse’s back with your test light. If the test light comes on, the pump needs to be replaced. You may accomplish this quickly with the aid of an experienced mechanic.


All of these methods should make it as simple as possible for you to resolve the windshield wiper fluid not coming out. After doing everything mentioned above and your wiper fluid is still gone, it could be time to replace the entire assembly.

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