Symptoms of a Bad or Failing Fog/Driving Light Bulb

The fog light bulbs are the bulbs that are located underneath the headlights, and provide the illumination for the fog lights. They are usually high intensity bulbs, sometimes tinted yellow, and are designed to help increase visibility. The light provided by the fog/driving lights make the vehicle easier to see for other drivers and make the edges of the road easier to see during adverse conditions, such as heavy rain or dense fog. As the bulbs are what provide the illumination for the fog lights, when they fail or have an issue, they can leave the vehicle without functioning fog lights. Usually a bad or failing fog light bulb will produce a few symptoms that can alert the driver of an issue.

Fog lights are dim or flickering

One of the most common symptoms of a problem with the fog light bulbs are fog lights that are dim or flickering. If the fog lights begin to suddenly shine more dimly than normal or flicker when they are turned on, then that could be a symptom that the light bulbs are worn. Aside from not providing proper illumination, usually dim or flickering bulbs are also approaching the end of their service life and likely only have a short time before they fail completely.

Fog lights do not turn on

Another symptom of a problem with the fog/driving light bulbs are fog/driving lights that do not turn on. If the bulbs break or the filament wears out for whatever reason, it will leave the fog lights without functioning bulbs. Broken or non-functional bulbs will have to be replaced to restore functionality to the fog lights.

Fog light bulbs are the same as any other bulbs. While fog lights are only utilized during specific driving conditions, they are an important feature that can increase safety. If you suspect that your fog/driving light bulbs may be out, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if your car will need a fog/driving light bulb replacement.


Next Step

Schedule Vehicle Body Electrical and Lighting Inspection

The most popular service booked by readers of this article is Vehicle Body Electrical and Lighting Inspection. Once the problem has been diagnosed, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. We currently cover over 2,000 cities and have 100k+ 5-star reviews... LEARN MORE

SEE PRICING & SCHEDULING

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Recent Vehicle Body Electrical and Lighting Inspection reviews

Excellent Rating

(149,537)

Rating Summary
140,027
5,194
1,055
749
2,512
140,027
5,194
1,055
749
2,512

Marco

29 years of experience
129 reviews
Marco
29 years of experience
Ford F-150 - Vehicle Body Electrical and Lighting - Highland, California
Great experience! Marco showed up right on time and was very polite and pleasant. He got right to work and assessed my problem quickly and made recommendations for repair which I was able to take care of myself later. Very good experience and would definitely use Marco again!

Matthew

33 years of experience
991 reviews
Matthew
33 years of experience
Pontiac Firebird - Vehicle Body Electrical and Lighting Inspection - Newport News, Virginia
Arrived on time, very professional and knowledgeable - especially about my old car.

Jerel

11 years of experience
125 reviews
Jerel
11 years of experience
Volvo S80 - Pre-purchase Car Inspection - Clayton, North Carolina
Punctual,Professional and Knowledgeable.

Diego

21 years of experience
564 reviews
Diego
21 years of experience
GMC Acadia - Check Engine Light is on - Glendale, Arizona
Outstanding customer service. Was a great experience, felt like I knew the guy forever. Very knowledgeable.

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

Related articles

How to Replace a Turn Signal Bulb
Replace burned-out turn signal bulbs quickly to drive safely and legally.
How Long Does a Courtesy Light Bulb Switch Last?
The The courtesy light bulb switch controls the courtesy light. When you open and close the doors of the vehicle, the courtesy light comes on to allow you to see better. This is both convenient and much safer for you...
When Should I Use Fog Lights?
Most Most cars used to come with only high and low beam headlights. That was about it. Fog lights were introduced in an effort to make highway travel during foggy conditions safer. Many newer vehicles come with fog lights as...

Related questions

Are High and Low Beams Separate Bulbs?

This is a great question since depending on the vehicle and manufacturer the lights can be configured in different ways. This can be a concern if you find your headlights are not working, since you need to know what type...

Interior lights quit working

Hello. There may be a problem with the combination switch or a headlight switch. It is also possible that there is some damage to the wiring of the dashboard, interior lights, and fog lights. I suggest that you have an...

Two new xenon light bulbs burn out instantly as soon as they are turned out.

If the old bulb wasn't burnt out by the ballast, the new ones shouldn't either. The most likely cause of your woes are the cheap bulbs. I would strongly suggest only purchasing name brand bulbs. They may be much more...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com