What is the reason for one side of the front fog light not working?
2 Answers
Reasons for one side of the front fog light not working: 1. It could be due to a blown fuse, a short circuit in the bulb, or the bulb burning out. 2. Generally, if only one headlight is not working, it is mostly caused by a burnt-out bulb. 3. If both headlights are not working simultaneously, it could be due to a blown fuse, both bulbs burning out at the same time, or aging and breaking of the wiring or loose terminals, although the probability of these last two phenomena is very low. Solution: The vehicle's circuit fuse box is fixed under the hood in the engine compartment, near the fender. The exact location varies depending on the vehicle model. Locate the circuit fuse box, open the cover, and you will see various fuses and controllers of different amperages for electronic devices. The back of the cover has a corresponding diagram, which can help you locate the positions of the left and right headlight fuses. Use the included puller to remove the fuse and observe whether the contact points at both ends are melted. If there is a gap, it means the fuse is blown. If the node is normal, reinsert the fuse as it was and proceed to check both headlights.
I've also encountered a situation where one side of the fog light doesn't work, and it's most likely a burnt-out bulb. Fog lights, like brake lights, have filaments that are prone to melting after prolonged use, especially the cheaper bulbs in lower-end cars which have a shorter lifespan. If you want to check it yourself, first turn off the engine and open the light cover, then unscrew the bulb on the faulty side to see if the glass is blackened or the filament is broken. If it's not the bulb, it could be a fuse issue—the fog light fuse in the fuse box under the driver's seat sometimes melts due to excessive current. Try replacing it with a new fuse of the same amperage, which costs just a few dollars. Another common problem is aging or loose wiring connectors. Last time, my car had an oxidized plug causing poor contact, and a bit of rust remover spray fixed it. Whatever you do, don't force it to work, especially on rainy days when visibility is poor—it's easy to get into an accident.
