Symptoms of a Bad or Failing Courtesy Light Bulb

The courtesy light, also commonly known as the dome light, is the light mounted on the interior of the vehicle, usually near the rearview mirror. The courtesy light uses a bulb that turns on when the vehicle door is opened to provide illumination for the passengers. Some dome lights are wired with a timer that turns them off automatically after a specified amount of time, while others will turn off when the doors are closed. The light provided by the dome light helps the passengers find their belongings and watch their step when entering and exiting the vehicle.

While light provided by the courtesy light bulb is not one critical to the operation of the vehicle, when there is a problem, the interior of the vehicle can be left without light, and can cause inconvenience to yourself or your passengers, especially in low light conditions such as night time or in parking structures. Usually when the courtesy light bulb has an issue, it will produce a few symptoms that can alert the driver of a potential issue that should be serviced.

1. Dome light is dim

One of the first symptoms commonly associated with a bad or failing dome light bulb is a dim dome light. If the dome light bulb becomes worn out it may not be able to shine as brightly as it once did. Usually a dim bulb will continue to get dimmer until it eventually burns out.

2. Flickering light

Another symptom of a possible problem with the courtesy light bulb is flickering. If the light bulb is rapidly flicking that may be a sign that the filament has worn out or become damaged. This is usually also a sign that the courtesy light is near the end of it’s service life.

3. No interior light

Probably the most noticeable symptom of an issue with the courtesy light bulb is a dome or courtesy light that does not function. If the bulb burns out the courtesy light will be unable to provide light, and will have to be replaced in order to restore illumination to the interior of the vehicle.

While the dome light bulb is not one critical to the safety of the vehicle, the illumination it provides does make the driving experience more comfortable and convenient for the passengers. For this reason, if you suspect your courtesy light bulb may be having an issue, have the vehicle inspected by a professional technician, such as one from YourMechanic. They will be able to replace your courtesy light bulb if necessary.


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

(171,627)

Rating Summary
161,099
5,644
1,174
834
2,876
161,099
5,644
1,174
834
2,876

Chris

6 years of experience
82 reviews
Chris
6 years of experience
Chevrolet Cavalier L4-2.2L - Vehicle Body Electrical and Lighting Inspection - Jonesboro, Georgia
Genuinely seemed to care about meeting the expectation of me (the customer) with a corrective remedy to my automobile's electrical issue. Genuinely seemed to want to deliver long-term issue-free results.
Lexus RX330 - Coolant Temperature Switch (Sensor) - Jonesboro, Georgia
Awesome person awesome crew. Fast and efficient. Great customer service skills with the whole crew. Thanks for your help and I'll be using you guys again real soon

Patrick

33 years of experience
1408 reviews
Patrick
33 years of experience
Chrysler 200 L4-2.4L - Brake System Flush - Pflugerville, Texas
Very honest guy right off the back which made me able to trust him. Quick service and he also told me about a few other minor issues! Will be using Patrick again for my next service. Highly recommended!
Honda Accord - Clutch Master Cylinder - Austin, Texas

Marco

29 years of experience
221 reviews
Marco
29 years of experience
Ford F-150 V8-5.4L - 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
1210 reviews
Matthew
33 years of experience
Pontiac Firebird V8-5.3L - Vehicle Body Electrical and Lighting Inspection - Newport News, Virginia
Arrived on time, very professional and knowledgeable - especially about my old car.

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 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...
How to Add Neon Lights to Your Car
Have Have you ever been to a car show and seen those colored lights beneath the car? These neon lights can be used to give your car a unique aura as you drive through the night. With advancement of LED...
How to Replace a Brake Light Bulb
Brake lights are powered by bulbs which fail when the brake light is dimmer than usual, is slow to respond, or the Brake Warning Light comes on.

Related questions

Why does a chime sound when my headlights are on, the engine is off and the driver’s door is open?
The reminder system in your Altima is there to help ensure that you don’t forget small but critical things like buckling your seat belt or taking the key out of the ignition when you leave the car. You’ll also hear...
The light bulbs on the tail lights work and I changed the fuse but the lights won't dim at night
Hello, thank you for writing in. You have covered the basics. You know the brake lights work, but they are not getting the power they should have under all circumstances. The most direct way, at this point, to find the...
One headlight working - changed the bulb and it didnt work
Hello, thank you for writing in. Several issues will cause faults with the bulbs. If the dim fog light and broken headlight are on the same side, this is a good indicator that there is an electrical wiring issue. Essentially,...

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