This sounds like the headlight switch is bad, but we should check the fuses. If the fuses are okay, I would test through the multifunction switch and the headlight switch as well. This guide can help you test the fuses and check for power, and I have included the headlight wiring diagrams so you can see which fuses to test and how the system works.
https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester
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Tuesday, January 23rd, 2024 AT 1:45 PM