When the headlight s are out, the first thing to check is to see if the bulb is burned out. If it is, look back in your records and see how long ago they were changed. Could just be you need new bulbs.
If it was not that long ago, and the bulbs are burned out, look to see if there is corrosion at the connection. It may need to be cleaned up.
If it is neither of these simple problems, it could be an electrical issue, which would require testing to see where the problem is.
〉 Answered on Nov 15th, 2013 by Amy Mattinat, Owner and Author at Auto Craftsmen Ltd
A fuse could be burnt out or you have a bad control switch.
〉 Answered on Nov 15th, 2013 by Barb Petrey, President - DBK Enterprises Inc at Jiffy Lube
If only one side is out, check the bulbs. If both sides are out, check the fuses. Do the tail lights and turn signals operate properly? It may just be coincidence that the front bulbs went at the same time, but if the rear lights are also inoperative, you may have a wiring issue or a problem with the headlight switch.
〉 Answered on Nov 15th, 2013 by Helaine Kurot, Owner/Technician at 360 Automotive