Both the fog lights and driving lights supplement the amount of visibility your headlights gives in various driving situations. To assist increase visibility in foggy conditions, fog lights sends out a wide beam to assist the driver see more of the road. Driving lights can be particularly assistive 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 functions:
When a driver wants to use their fog or driving lights, they uses a switch in the cabin which shows to a relay that the lights should be turned on. The relay then sends power from the battery to power the lights. Fuses keep electrical parts on the vehicle from overloading the system and will blow or break the connection when they notice a problem.
Common reasons why this happens:
- Blown Fuse:As a first step, many mechanics will check your fuses in the event an electrical part, like the fog or driving lights, fails. When a fuse blows, it keeps the circuit from completing and will not let the lights to turn on.
- Burned-out Bulbs:Over time, bulbs will wear out and will stop functioning. A good indication that a bulb has burned out is if only one light is out and the other light is operating properly. If a bulb burns out, it typically will not affect the rest of the electrical system, allowing other bulbs to operate normally.
- Bad Relay:A relay sends power from the battery to the lights themselves, but when a relay fails, the connection is not able to be completed. A relay may also fail because it is not grounded accurately. A wire that is not grounded correctly is unable to protect the circuit and offer an outlet for excess charge that build up. A car with a bad relay or bad ground may not be able to successfully power your fog or driving lights.
How it is done:
When checking electric parts on your vehicle, especially, fuses and relays, the mechanic will bring a multimeter which will assist him or her diagnose what specific problem has failed. The mechanic will start by first examining the vehicle to look for any signs of superficial damage (e.g. broken lights, frayed or incomplete wiring). If there is no superficial damage to the vehicle, the mechanic but then start examining the different parts along the electrical circuit.
The mechanic will most likely begin by inspecting the car’s fuses. A typical car has many fuses corresponding to different functions like lights, the radio, and auxiliary power sources. The mechanic will inspect the fuses specific to the fog and driving lights to ensure that it isn’t blown. If it is, he or she will change the fuse with another one appropriate for the amperage require of the circuit.
If the fuses are in good working order, the mechanic will check the bulbs in the fog and driving lights to ensure that they are functioning properly. A bad bulb will typically have a broken filament which keeps current from running through the bulb and illuminating the gas inside. If the bulb needs to be changed, a mechanic will changed it with a bulb that is appropriate for the car.
If the mechanic thinks its a bad relay, he or she will find the corresponding relay for the fog and driving lights and use a multimeter to test the resistance of the of the unit. If the relay is not function correctly, the mechanic will change it and ensure that it is wired up properly.
In all situation, the mechanic will be sure to test your lights before he or she leaves to ensure that they are working properly.
How important is this repair?
Fog and driving lights offers a driver with more visibility in potentially dangerous situations. Drivers with a greater require for this extra illumination should be diligent when seeking out repairs. A mobile mechanic can changes necessary components so as not to compromise visibility during your driving. It can be difficult for some drivers to adjust to high and low beams exclusively, after regular using fog and driving lights. Having that extra layer of security, the extra visibility, can increase a drivers ability to avoid hazardous situations.
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