I have a 2008 S40 2.4. A couple days ago a bunch of water leaked after it was parked. The radiator was still full. I felt the water and it felt soapy. When I hosed it off the driveway it turned into heavy suds like soap which makes me think it may be the windshield washer reservoir. I filled the washer reservoir but it took very little water. I noticed there is a hole in the top of the reservoir cap for the washer fluid when I blow into the cap water blows out of a small hose near the top of the reservoir.

Any ideas out there ?