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Yep, I agree. My 3 series was blocked too. I just removed the plastic bottle/ reservoir and pulled the pump from the bottom. Cleaned both the pump and filter with hot water and refitted good as new.

Morning Michelle Welcome to the Forum BMW have a fine mesh filter/screen around the bottom of the pump if a screen wash has been used that doesn't have a fungicide added a jelly like mess clogs the mesh and stops the washers working. If you cant do it yourself you need a friend who can remove the pump and either change the filter or simply wash it under the tap, also check that the washer reservoir is cleaned out as the sticky stuff may be floating around in there. Take a look at www.realoem.com either look for your model or put the last 7 digits of your Vin onto the search box it will bring up your model. You will find small exploded drawings that will help see where stuff fits. Dave