Had this problem on a Sierra years ago, the headlights were hopeless and brighter standard wattage bulbs were not yet available, so i along with many others put 100w main beam/80w dip beam headlight bulbs in, within a few months the extra heat of the current passing through the dipswitch melted the combined stalk switch.
I was able to cure this, obviously fitting a new switch, but fitting relays to the headlamps so the dipswitch only carried the relay signal current.
I wonder if the Hyundai headlight wiring is not relayed but like the Sierra all power going through the stalk switch.
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