How to Deal with a Leaking Windshield Washer Fluid Reservoir?

[DiGarrett]

Here are the methods to address a leaking windshield washer fluid reservoir: 1. Overfilling: If the reservoir is leaking due to overfilling with washer fluid, simply wipe away the spilled fluid. 2. Component Issues: If the leak is caused by aging or cracking of the rubber sleeve at the contact point between the washer pump and the reservoir, or by cracks in the washer pump hose, professional replacement or repair is necessary. 3. Tank Cracks: For small cracks in the reservoir, drain the fluid, dry the area with heat, and seal the crack from the inside with adhesive. Large cracks require replacement. Additionally, leaks may occur if the sealing strip is improperly installed or bolts are loose; tightening the bolts can resolve this issue.

[MacDaniella]

The other day on the highway, I found the windshield washer wasn't spraying water. After pulling over to check, I discovered the washer fluid reservoir was leaking. A quick fix is using soap to temporarily plug the leak—soap expands when wet and can hold for a while. Remember to stop using the washer immediately, or it'll leak even more. When I fixed mine last week, I found that 90% of leaks are caused by aging and cracking plastic reservoirs, with sun exposure and winter freezing being the main culprits. If the leak is at a hose connection, just cut off the damaged section and reconnect it with a hose clamp. But if the reservoir itself is cracked, it's best to replace the whole unit—aftermarket parts online cost just around 100 yuan. When washing your car, always pop the hood to check the reservoir; spotting cracks early saves you from being stranded on a trip.

[Figueiredo]

Last winter, I encountered a leaking windshield washer fluid reservoir in my car, mainly due to negligence when switching to antifreeze washer fluid. First, identify the leak situation: a leak at the bottom is likely caused by a crack from a stone impact, while a leak on the side is often due to plastic aging. Using a sealant is only a temporary fix; for a long-term solution, you’ll need to replace the reservoir. DIY replacement isn’t difficult—just drain the remaining washer fluid, remove the front wheel liner, and you can take out the reservoir. Be sure to purchase an OEM part with an antifreeze rating, as cheap plastic parts may leak again within six months. Also, a reminder: the reservoir and washer pump are integrated, so a leak can ruin the pump, costing you an extra couple hundred bucks. I recommend checking the reservoir’s condition every season to prevent minor issues from turning into major headaches.

[McAdalynn]

A leaking windshield washer reservoir can range from minor to serious. I've repaired it three times myself and have some experience. First, open the hood and perform a water filling test to locate the leak: wrap plumbing tape around loose connections, and use AB adhesive for temporary repairs on small cracks. However, if the reservoir is severely deformed, it must be replaced entirely. When removing and installing, be careful not to damage the washer motor connector. After installing a new reservoir, perform a pressure test. I recommend replacing the windshield washer fluid with antifreeze before winter each year, as there are too many cases of ordinary water freezing and cracking the reservoir. When washing your car, avoid using a high-pressure water gun directly on the reservoir area, as the plastic in older cars is particularly fragile. Don't delay if you find a leak, or the wiper motor may burn out.