Don't know if this has ever happened to anyone before but I went through a touchless car wash yesterday and when I got home I shut the car off and the radiator fans never went off. I waited about 5 minutes and still going. I finall pulled the fuse and it shut off. I waited another 5 minutes and put he fuse back in and sure enough the fans kicked back on.

I checked the ECU box and its is completely dry, no water in there and the relays are clean.

From what I have read this is probably a bad fan control module. Being in the front with the high power from the car wash it makes sense that water could get in there

Be careful if you use those!