1. Home
  2. Articles
  3. Symptoms of a Bad or Failing Fog Light Switch

Symptoms of a Bad or Failing Fog Light Switch

fog light switch

The fog light switch is the electrical switch that is responsible for controlling the operation of the fog lights. Fog lights are additional lights that are located beneath the headlights. They are designed to provide additional visibility during adverse weather conditions, such as heavy rain or dense fog. Their low placement and wide angle helps the driver keep sight of the edges of the road, as well as the lanes. When the fog light switch fails, it can leave the vehicle without functioning fog lights. Usually a bad or failing fog light switch will produce a few symptoms that can alert the driver of a potential issue.

1. Fog lights do not turn on

One of the first symptoms that is commonly associated with a bad or failing fog light switch are fog lights that do not turn on. For vehicles that do not utilize automatic fog lights, the fog light switch is the switch that is responsible for turning the fog lights on and off. It operates the same as any other electrical switch, and can break or have internal failures that will render them inoperable. A broken or failing fog light switch will leave the fog lights inoperable, even if the bulbs are fine.

2. Fog lights are dim or flickering

Another common symptom of a problem with the vehicle’s fog light switch are fog lights that are dim or flickering. If the switch has any sort of internal issues that prevent it from properly supplying power to the fog lights, then it may cause them to illuminate dimly or even flicker. This can also be caused by a problem with the fog light bulbs, so a proper diagnosis is highly recommended.

3. Blown fog light fuse

Another symptom of a possible problem with the fog light switch is a blown fog light fuse. If there is any sort of issue with the fog light switch that allows an excessive amount of power through the circuit, such as a short or power surge it can cause the fuse to blow, which will disable the fog lights. Power can be reactivated by replacing the fuse, however the fuse may blow again if the original problem that caused it to blow in the first place is left unattended.

While fog lights are not normally used during regular driving conditions, they can be a very useful tool for increasing visibility and therefore safety during adverse weather conditions. If you suspect that your fog light switch may be having an issue, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if your car will need a fog light switch replacement.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Still not sure about your car's issue?
Diagnose your car
What kind of issue are you experiencing?
Brakes are squeaking
Car is not starting
Car is overheating
Car is shaking (vibrating)
Fluids are leaking
Heating and A/C
Smoke or steam is coming out of the car
Warning light is on
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Get a Louisiana Driver's Permit
s licensing program. The first step in this program is to obtain...
Veteran and Military Driver Laws and Benefits in New Mexico
The state of New Mexico offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch...

Related questions

Q: Brights and fog lights stopped working.

The fog lights would only work with the low beams. The high beams would be on with the indicator. The system may have a defective light switch causing the issue if you cannot switch to low beams by pulling the...

Q: Noise after the car is turned off, car idles rough - 1973 Nissan 240Z

Hello. It sounds like the starter relay might be bad and is causing the starter to stay on, which is the clicking noise that you are hearing. There could also be a problem with the starter solenoid. The problem you...

Q: When Should Fog Lights Be Used?

There is a great difference between "fog lights" and "driving lights." Not only are the lights themselves different, but the reason for their use differs, as well. Fog lights are only used in certain scenarios. For example, in times of...