1. Low Washer Fluid: Make sure that the windscreen washer fluid reservoir is full. If it's empty or low, refill it with a suitable windscreen washer fluid.
2. Clogged Washer Jets: The washer jets can become clogged due to dirt, debris, or mineral buildup. To clean the jets, use a pin or thin wire to clear any obstructions.
3. Faulty Washer Pump: The washer pump is responsible for pumping the washer fluid through the jets. If it's faulty, it won't be able to supply fluid to the jets. Check the washer pump for any damage or leaks, and replace it if necessary.
4. Faulty Wiring: The washer pump and other components related to the windscreen washers are powered by electrical connections. If there is a break in the wiring, the washer pump will not receive power and the washers will not work. Check the wiring for any damage, loose connections, or corrosion.
5. Faulty Switch: The windscreen washer switch is what you use to activate the washers. If it's faulty or not making proper contact, it won't send a signal to the washer pump, causing the washers not to work.
6. Other Issues: In rare cases, other underlying issues, such as problems with the windscreen washer motor, relay, or control module, could also prevent the washers from working. If the problem persists after checking and fixing any of the above-mentioned issues, it's best to have a professional mechanic diagnose the exact cause and perform the necessary repairs.