Windshield washers are fairly reliable. When they fail, it's usually the result of a clogged nozzle or a dead pump. Here's how to diagnose and fix both problems. Project step-by-step (5)Step 1 Check the FuseWith the car parked in a quiet place, operate the window washer and listen for the whirring of the pump.
Step 2 How to Find the Fluid Reservoir and PumpMost car manufacturers mount the washer pump near or inside the washer fluid reservoir. To locate your reservoir, simply follow the windshield washer hose. If your reservoir is in the engine compartment, access is simple. But many are hidden inside the front fender. Remove the wheel and the wheel line fender liner. Then you'll have access to the reservoir and pump. Sign Up For Our NewsletterComplete DIY projects like a pro! Sign up for our newsletter! Do It Right, Do It Yourself! Step 3 Clear Clogged Windshield Washer NozzlesClear the clogged windshield washer nozzle with a pin, then use compressed air to blow the debris backward through the hose.
Lift the hood and trace the washer hose from the nozzles back to the reservoir.
How to Change Wiper Blades in 3 Steps Step 4 Check PowerIf the fuse is good but the pump doesn't run, disconnect the connector at the pump and check for power with a volt meter.
Remove the pump wire connector and have a friend operate the pump switch while you check for 12 volts with a digital meter at the connector.
Try the pump again. If it works, your problem is solved. If it doesn't, replace the pump. The main cause of pump failure is repeatedly running the motor while the reservoir is empty. So try to keep your reservoir full to avoid dealing with replacing a bad one. Safer Driving with a Windshield Coating Step 5 Replace the Washer PumpPull out the old pump and replace it with a new one, following the replacement procedures packaged with your new washer pump.
How to Troubleshoot Windshield Washers Originally Published: October 15, 2019
Similar ProjectsPopular How-To Videosⓘ Why is my windshield wiper fluid not spraying out?Clear Clogged Windshield Washer Nozzles
Clear the clogged windshield washer nozzle with a pin, then use compressed air to blow the debris backward through the hose. If you hear the pump going but don't get fluid, you probably have clogged windshield washer nozzles.
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