Unsolvable light problem

[MommaB1417]

Hey everyone. So yesterday my signals, hazards, and high beams stopped working. Today I replaced the multifunction switch and I checked all of the fuses and relays and all of them were good. I usually have my headlights set to Auto but they are not working in the auto function. They are coming on and staying on all day while I'm driving but they do go off when I turn the car off. Also the windshield wipers are working fine but the windshield washer fluid switch does not work. I do not have the heated windshield washer switch. Any advice?
** 2006 Buick Lucerne CXL V6 engine

 

[Ropchips]

Hey everyone. So yesterday my signals, hazards, and high beams stopped working. Today I replaced the multifunction switch and I checked all of the fuses and relays and all of them were good. I usually have my headlights set to Auto but they are not working in the auto function. They are coming on and staying on all day while I'm driving but they do go off when I turn the car off. Also the windshield wipers are working fine but the windshield washer fluid switch does not work. I do not have the heated windshield washer switch. Any advice?
** 2006 Buick Lucerne CXL V6 engine

First off, how do you check your fuses?
I use a DMM (Digital Multimeter) to test continuity.

How do you test your relays?

Even though you said the washer fluid switch isn't working....I'd check the washer fluid pump. I guess if the switch is bad you wouldn't even mention it if you already know the solution.

You also say the auto headlamps function isn't working but then describe yours as properly functioning auto lamps. Sooooo....that's quite the contradiction.