Hi, My driver's side headlight is dim from time to time, causing the warning light to illuminate "headlight". I've taken it to a couple of mechanics who say it is a faulty switch. I've swapped out the switch only to find them faulty as well. Does anyone know if cleaning the contacts can fix this issue? Have any of you experienced this problem? New switches are over $400 dollars so I'm hoping to find a way to fix this.