If the fuse is not blown, check if the pump is getting any power. If you do not hear whirring sound of the pump when you turn on the windshield washer system on your Fiat 500, you should first check the fuse for the pump. If there is no sound, then it means the pump is not working in your 500. You should hear the whirring of the pump.While standing outside your 500, switch on the windshield washer.Turn on your vehicle and open the driver’s door or roll down the window.You can do a quick diagnosis by performing a noise test. In case of a faulty fuse, the circuit is interrupted and the pump can not work. The pump of the windscreen washer system on Fiat 500 needs electricity to work. If there is little or no flow of fluid from the disconnected hose, it means the nozzles are probably good but the problem lies somewhere else. You should see the fluid gushing out of the hose. Pull the end of the hose out of a windshield washer nozzle on your 500, and then turn on the washer system. Important: Before replacing the nozzles, make sure the fluid is being pumped normally. If you do hear the whirring sound coming from the front of your 500, the pump is working and the culprit is most probably clogged nozzles. If there is no sound, then it means the pump has failed or there is no power to the pump. You should hear the whirring of the pump. Now, stand outside and switch on the windshield washer. Switch on the vehicle and turn down the driver’s door window. The easiest way to check if the pump is working is by doing a noise test. With each pumping process, a larger area is wetted with washer fluid, at the same time, however, the finer nozzles tend to clog faster.ĭiagnosis: Before you decide on replacing the nozzles, you must rule out any problem with the washer pump or the hoses. However, modern cars are equipped with so-called “fan nozzles” or “micro-emitters” which produce a wider and finer spray jet. In older vehicles, drivers could easily clean the nozzles themselves by inserting a fine needle into the holes without any effort. The impurities can then be collected by the rainwater running off, which then gets caught in the nozzles and gradually clogs them. They are located near the bottom of the windshield, where dead insects, dust, pollen and limescale are often deposited. Clogged nozzles are often the reason why the windscreen washer system does not work on 500.
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