The passenger side high beam on my 2018 is not working. How does the system work exactly? Does the same bulb serve as both low and high beam? Does the bulb move, or does a reflector move? I don't have a warranty, so this is on me. Parts are $350 and up, and you could spend over a grand on one side, so I'd like to approach this intelligently. The bulb does move side to side. Thanks.