[fleetfoot]

This was a great DIY. After 10 years of ownership of my 2013 E92, I finally refilled my washer fluid a couple weeks ago, which apparently led to a bunch of the tank slime getting swirled up and clogging the sprayer pump filter. I followed this DIY, and got it cleaned up nicely. A few notes:

1) When I removed the filler hose, there was a FLOOD of fluid from the hose and the tank itself. This was impossible to catch because the streams were shooting opposite directions. Plan on making a mess.
2) My filter was completely clogged, so definitely start by cleaning that.
3) I had a TON of slime floating in the tank itself. It took multiple flushes with hot water and vigorous shaking to get it all out. I would highly recommend this step so your nice clean filter doesn't get clogged back up again.
4) I'd also recommend wiping out the bottom of the filler tube with a rag as there were quite a bit of slime there too.
5) I removed the cabin air filter to access the hoses near the sprayer nozzles. I blew these out with an air compressor, but there didn't seem to be any slime this far up. The filter in the tank seems to be doing its job.
6) The black tape holding the wiring for my pump and side indicator wasn't sticky anymore. I reused the old tape, and then wrapped it once with some duct tape so it would stay put.