Both fog lights and driving lights supplement the amount of visibility your headlights produce in various driving situations. To help increase visibility in foggy conditions, fog lights emit a wide beam to help the driver see more of the road. Driving lights can be particularly helpful by adding more light to a particularly dark and unfamiliar road. When the fog and driving lights fail, drivers may struggle to readjust to the standard high beam/low beam headlights.

  • How this system works
    When a driver wishes to use their fog or driving lights, they engage a switch in the cabin which indicates to a relay that the lights should be turned on. The relay then transfers power from the battery to power the lights. Fuses keep electrical components on the vehicle from overloading the system and will blow or break the connection when they sense a problem.

  • Common reasons for this to happen
    Blown fuse: when a fuse blows it prevents the circuit from completing and will not allow the lights to turn on.

    Burnt-out bulbs: over time bulbs will wear out and will stop working. A good indication that a bulb has burned out is if only one light is out and the other light is functioning properly. If a bulb burns out, it typically will not affect the rest of the electrical system, allowing other bulbs to function normally.

    Bad relay: A relay transfers power from the battery to the lights themselves, but when a relay fails, the connection is unable to be completed. A relay may also fail because it is not grounded properly. A wire that is not grounded properly is unable to protect the circuit and provide an outlet for excess charge that build up. A vehicle with a bad relay or bad ground may not be able to successfully power your fog or driving lights.

  • Importance of  driving and fog lights
    Fog and driving lights provide a driver with more visibility in potentially dangerous situations. Drivers with a greater need for this extra illumination should be diligent when seeking out repairs. A mechanic can replace necessary components so as not to compromise visibility during your commute. Having that extra layer of security, the extra visibility, can increase a drivers ability to avoid dangerous situations.

  • Diesel-Electric supplies driving and fog lamps – contact an outlet near you.

We recommend should you be in doubt on how to change or suspect any issues you take it to an authorised auto dealer or mechanic to make sure all is operating properly.