Q: While driving at night, headlights occasionally turn off, so using high beams which do work

It sounds like there is a problem with the headlamp circuit. At first, I was going to say that the headlights have a poor ground connection, but then, looking at the wiring diagram for your vehicle, I noticed the high and low beams have a common ground. So, since the high beams always work, that can’t be the problem. My guess is that the multifunction switch has failed. This switch supplies a path to ground when the low beams are selected. Other possible problems include a short somewhere in the circuit or two internally shorted bulbs (which is not very likely). Electrical problems can be difficult to trace. Therefore, I recommend you have a professional, such as one from YourMechanic, inspect and repair your headlights.