i have an 01 sonata that the wiper delay is not working right on. the high and low speeds work fine but the delay seldom works, if it does it's only for a minute or two and then will just freeze where the wipers are on the windshield. I've read of a relay maybe being bad but haven't located it yet to try it out. do these cars have a printed board that controls the delay like some GM's do? or could the multifunction switch itself be the problem?