electrical. Air conditioner fan works when it wants. Same with traction control light (may stay on for a few drives), check engine light will come on for a drive then be off a month and now, one headlight doesn't work on low beam

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electrical. Air conditioner fan works when it wants. Same with traction control light (may stay on for a few drives), check engine light will come on for a drive then be off a month and now, one headlight doesn't work on low beam but they both work on high beam. How do I fix this possessed car?