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

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 Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...
How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...


Related questions

Q: Someone disconnect my right side flickering lights from the back how do I connect them back?

YourMechanic can help you with this. Please request a turn signal circuit malfunction diagnostic and the responding certified mechanic will get this taken care of for you. Using a continuity tester, the mechanic will check the turn signal circuit and...

Q: How do I turn on the fog lights?

The fog lights provide extra visibility in foggy weather conditions. To use the fog lights, first turn on the headlights. Then rotate the fog light band (located on the turn signal lever) to the on position. Tips When the high...

Q: Some lights don't work - 2011 Mitsubishi Outlander Sport

Hello. Using a VOM check for voltage at the bulb receptacle. You will probably find that the circuit is "dead" at that point. You then have to trace the circuit to find out where it is open. You might have...