How does a windscreen washer pump work?
A windscreen washer pump is a small electric pump that helps clean your car’s windshield. When you press the button or lever for the windshield washers, it activates the washer pump. The pump is connected to a reservoir filled with washer fluid, usually a mix of water and cleaning solution.
When activated, the pump draws the washer fluid from the reservoir and pushes it through hoses to the windshield nozzles. These nozzles spray the fluid onto the windshield in a fine mist. The washer fluid helps to clean off dirt, bugs, and other debris, making it easier for the wipers to clear the windshield and improve your visibility while driving.
What does a windscreen washer pump replacement job involve??
Here’s an overview of how a windscreen washer pump replacement is done by a mechanic:
- The mechanic locates the windscreen washer pump, which is usually attached to the washer fluid reservoir.
- Next, any components obstructing access to the washer pump, such as protective covers or panels, are removed.
- The mechanic disconnects the electrical connector and washer fluid hoses from the old pump. This may involve unclipping or unscrewing the connections.
- The old washer pump is carefully removed from the reservoir. This often involves pulling the pump out of its mounting rubber grommet or unclipping it from the reservoir.
- Before installing the new washer pump, the mechanic inspects the washer fluid reservoir for any signs of damage or debris and cleans it if necessary.
- The new washer pump is then positioned and securely installed into the reservoir. The mechanic ensures it is seated properly and that any seals or grommets are in good condition to prevent leaks.
- The electrical connector and washer fluid hoses are reattached to the new pump, making sure all connections are secure and free of leaks.
This job requires skill and mechanical knowledge, which is why a professional mechanic best does it.
How do I know whether I need a windscreen washer pump repair or replacement?
In some cases, the washer pump is only partially damaged wherein repairing it may solve the problem. However, it is usually a temporary fix. It’s recommended to replace the washer pump entirely - it costs around the same and you have a brand-new washer pump too.
If no fluid sprays when you activate the washer system, it could indicate a faulty washer pump. First, check that the washer fluid reservoir is full. If it is and the pump still doesn't work, the pump may need repair or replacement.
If you hear a strange noise, such as grinding or whining, when you activate the washer system, it might mean the pump is failing. These noises often indicate that the pump's internal components are worn out or damaged.
If the washer fluid sprays weakly or inconsistently, it could be a sign that the pump is not working correctly. This could be due to clogging or partial failure of the pump.
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Frequently asked questions about windscreen washer pump replacement & repairs
Read our answers to questions about windscreen washer pump replacement costs, symptoms and more.
What does a windscreen washer pump do?
The windscreen wiper / washer system enables you to clean your windscreen while driving. The washer fluid assists the window wipers to clean the windscreen of dirt and debris. The washer nozzles that distribute the washer fluid over the windscreen are powered by the washer pump.
What does a windscreen washer pump replacement involve?
- The mechanic will inspect the windscreen washer system.
- The mechanic will carry out checks to determine the exact fault in the electrical system.
- If necessary, the mechanic will replace the faulty washer pump.
- The mechanic will advise if any other parts need to be replaced.
- The mechanic will test the windscreen's wiper / washer facility to ensure it works correctly.
- If necessary, the mechanic will make adjustments to the washer jet direction.
Can I do a windscreen washer pump replacement myself?
Unless you are a qualified mechanic with the required skills, training and equipment to do the job, we strongly recommend a windscreen washer pump replacement is only carried out by a professional mechanic. ClickMechanic can help get you a vetted and local mechanic to carry out the work. Just enter your postcode and your car's registration number at the top of this page and select the work needed to get an instant fixed price up front.
How do I know if my windshield washer pump is broken?
- When there is no washer fluid coming from the washer nozzles.
- When there is an irregular or poor supply of washer fluid coming through the washer jets.
- If you go to spray the windscreen and cannot hear the pump running to build the pressure.
How long will a windscreen washer pump replacement take?
A windscreen washer pump replacement usually takes around 1 hour, but can take less or more time. Ultimately, the time that the job will take will depend on a number of factors, like your vehicle's make and model, year, as well as other factors. Select your car at the top of this page for information on job time and cost for your vehicle through ClickMechanic.
How often should I replace a windscreen washer pump?
There is no set interval to replace a windscreen washer pump. When you have symptoms like no washer fluid coming from the washer nozzles, or another of the symptoms listed it is possible the washer pump may need replacing. At an inspection the mechanic will establish, step by step, what the exact fault in the electrical system is before replacing any parts.
Please note, though, when there is no washer fluid being distributed over the window it is not necessarily the washer pump that has failed. In some cases it might be that the wiper switch has failed or that the system has blown a fuse. Equally it could be a loose or corroded wire connector.
How common is a windscreen washer pump replacement?
Although it's a common item, its simplicity, if maintained, means failure happens occasionally rather than regularly.
How can I extend the lifetime of my windscreen washer pump?
The only thing you can do, and this is more important than you may think, is use the right screen detergent at the correct ration. This stops the pump getting clogged up with detergent if it is too undiluted and keeps it lubricated.
Never, ever, use washing up liquid in the washer system. It's not designed for using it and you will clog up the pump as well as producing a string of bubbles each time you spray the windscreen!
Can I still drive with faulty windscreen washer pump?
No, UK legislation sets out that all washers which are required to be fitted to a vehicle by law must be properly adjusted and maintained in efficient working order. A faulty windscreen washer pump therefore could mean you get fined if pulled over. Furthermore it is potentially a safety hazard as your vision of the road may be impaired if your are not able to wipe the windscreen in case of rain or dirt splashing onto the windscreen. If you suspect there is any issue with the windscreen washer pump or there are concerns about its condition, book with a professional mechanic immediately so they can check and advise on next steps.
Is a worn windscreen washer pump an MOT failure?
Depending on the severity, yes, it is likely that a worn windscreen washer pump could result in an MOT failure. If the MOT tester finds that windscreen washer components are not working or not providing sufficient fluid to clear the windscreen, it can be classified as a major fault. If you suspect that there may be a fault with the windscreen washer pump, it is best to get it checked and fixed before the MOT test.
What causes windshield washer to stop working?
A windshield washer can stop working due to a:
- Blocked nozzle
- Broken pump
- Faulty relay
- An electrical issue
How much does it cost to replace windshield washer pump?
Prices for a windscreen washer pump replacement range from £60 to £130 with an average cost of £90. Ultimately, the cost of a windscreen washer pump replacement depends on your car and what parts your car's manufacturer recommends using for the replacement. Find out what you could save by having your windscreen washer pump replaced by ClickMechanic by selecting your car at the top of this page!
Check out the ClickMechanic price for a windscreen washer pump replacement. See the averages for different makes below. We consolidate industry standard data with millions of data points to give you the most accurate price. These estimates may include Rear washer jet.
| Name | Average Cost | |
|---|---|---|
| Audi | £98 | Get exact price |
| BMW | £88 | Get exact price |
| Citroen | £85 | Get exact price |
| Ford | £93 | Get exact price |
| Land Rover | £121 | Get exact price |
| Mercedes-Benz | £109 | Get exact price |
| Nissan | £97 | Get exact price |
| Peugeot | £101 | Get exact price |
| Renault | £105 | Get exact price |
| Toyota | £103 | Get exact price |
| Vauxhall | £87 | Get exact price |
| Volkswagen | £90 | Get exact price |
Estimates on average repair costs, such as the above results for a windscreen washer pump replacement, are based on ClickMechanic's quote data which combines multiple third-party sources. Actual costs may vary. We provide estimates on average repair costs for information only and accept no liability for any inaccuracies or errors. If you think an estimate is incorrect, please contact us to let us know.
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