I have a 2017 Touareg (41,000 miles) and recently I've been losing washer fluid from the fill port area during driving. The cap and strainer basket are in place and snapped on yet during normal driving the area around the fill port is soaked with washer fluid and puddles under the car in the garage. I went to the dealer and spent $35 on a new cap/strainer basket yet the problem continues. I've been stuffing a rag in the fill and that helps. There are no cracks or holes in the plastic fill port tube. It is really bizarre - it almost looks like there should be some type of o-ring in the cap to help seal it. This started happening right after my 40,000 mile service at the dealer. Not a huge deal but super annoying. Any ideas/ help is appreciated.