Skip the auto shop - Our mechanics make house calls

Symptoms of a Bad or Failing Courtesy Light Bulb

Courtesy Light Bulb

Bad or Failing Courtesy Light Bulb Inspection

by a top-rated mechanic at your home or office

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.

HAVE SYMPTOMS OF CAR TROUBLE?
Get an $80 diagnostic
by a top-rated mechanic at your home or office.

Get a quote · Book an Appointment · Our expert mechanics come to you.

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.

HAVE SYMPTOMS OF CAR TROUBLE?
Get your car fixed at your home or office.

Get a quote · Book an Appointment · Our expert mechanics come to you.

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.

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

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2422 OBD-II Trouble Code: Evaporative Emissions Control System (EVAP) Vent Valve Stuck Closed
Diagnostic Trouble Code (DTC): P2422 P2422 code definition Evaporative Emissions Control System (EVAP)...


Related questions

Q: The truck has problems with lights

You may have a shorted wire between your reverse lights and your brake lights. This is a common issue due to the fact that the wires for these two lights are often wrapped together as one wiring harness. If your...

Q: Headlights always burning out

Hello, having to replace bulbs is becoming more of a regular maintenance item on all cars. With the advancements in electronics and the metal used in contacts, we are able to get more voltage to bulbs than ever before. Going...

Q: 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...