Symptoms
- Dome light doesn't turn on with doors open
- Light doesn't respond to the manual on/off switch
- Some interior lights work while others don't
- Light flickers before going out completely
Likely causes
- CommonBurned out light bulbInterior bulbs are small and simply wear out over time like any bulb.
- CommonBlown fuse for interior lightingA dedicated fuse can affect multiple interior lights if it blows.
- PossibleFaulty door jamb switchThe switch that detects an open door can wear out or get stuck.
- PossibleLight set to off manuallyMany dome lights have a manual on/off/door switch selector that can be bumped.
What to do
- Check the light's manual switch setting, since it may be set to off rather than door-activated.
- Try opening and closing each door firmly to test if a specific door's jamb switch is stuck.
- Check the fuse box for a blown interior light fuse and replace with the correct amperage.
- Remove the light lens cover (usually pries off gently) and inspect the bulb for a broken filament or dark spot.
- Replace the bulb with the correct type and size for your vehicle.
- Test other interior lights to see if the issue is isolated or affects multiple lights.
- Check the bulb contacts for corrosion and clean gently if needed.
- Have a shop check the door switch or wiring if a new bulb and fuse don't fix it.
Tools and parts
- Small flathead screwdriver or trim tool
- Fuse puller or pliers
- Replacement fuses
Interior dome light bulbSearch: “interior dome light bulb for [your car make model year]”
When to call a pro
If replacing the bulb and fuse doesn't work, a shop can test the door jamb switch and related wiring quickly.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.