If the headlight still does not work you have a wiring fault such as a loose ground connection a bad wiring harness at the headlamp housing or a corroded bulb socket. Wiring problems can also cause both headlights to stop working.

How To Troubleshoot Headlights All Problems Causes Fix Solutions

For example in cases where you have replaced the light bulb one of the headlights is not working.

Headlight not working bulb ok. If the headlight now works the problem was a bad ignitor not the bulb. If the bulb is alright but the headlights refuse to work there may be problems with the wiring. Wiring problems especially inside the headlight can also cause a headlight to stop working.

In this guide you will learn how to diagnose headlight problems. Headlight bulbs have a limited lifespan 450 to 1 000 hours so they ll eventually burn out. Bulbs and fuses seem ok have replaced headlight fuses posted by anonymous on aug 27 2014.

You need to replace only the ignitor and not the bulb. Headlight not working 2008 beetle bulbs all ok high and low beam both not working pass side. Headlight not working bulb ok details of headlight not working bulb ok.

Bulbs usually don t burn out together but it s still important to rule that out by checking for power. If the headlight still does not work try swapping the good ignitor module on the other side to the side that is not working. It can also be caused by fuse problems and you may need to further troubleshoot in order to know other possible causes.

Both headlights do not work. High beam headlights don t work or low beams don t work. This is the most common cause of a single high beam headlight not working but isn t common if both high beams aren t working because it s highly unlikely that both bulbs would blow at the same time.

Most total headlight failures are caused by a bad component like a fuse relay or module. Most headlight failures are caused by a blown a fuse. Other common problems include bad relay switch or module.