mwolf022612

Hello anyone out there that can help I appreciate it! I drive a 2004 c240 the other day I was driving and all of a sudden my wipers started going crazy like it was raining heavy. I turned them off then turned them back onto auto. The next day it started to drizzle wipers didn't turn on. The only time they come on is when I push the knob in the use my washers. I checked the fuse for the relays for the wipers it was good. Is it my combination switch or could it be my relays? Any info will help I have read other forums and found similar but not the same