2002 Hyundai Santa Fe 4 cyl Two Wheel Drive Automatic 69,000 miles. When driving my headlights and inside dash lights dim and brighten every few minutes. This began about a year ago. I find the dimming of the lights to be dangerous at night. The Hyundai dealership says this is normal and it is the way it's made. Is this true? I am taking my vehicle in again as it is under warranty. However, I think they are giving me a runaround.