What is a headlight bulb?
A vehicle’s headlight bulbs illuminate the road in front of you for better visibility and safer driving.
Driving with a burned-out headlight bulb puts you at greater risk of getting into an accident or receiving a traffic ticket.
When should I replace the headlight bulb on my car?
It’s usually pretty clear when it’s time to replace a headlight bulb. Here are the main signs you’ll notice:
Headlight won’t turn on at all: If your headlight bulb is no longer turning on, and its connections don’t appear to have any problems, it’s time to replace it as soon as possible.
Dimming or flashing headlight: If your headlight bulb appears to be dimming or functioning erratically, it might be nearing the end of its life—especially if only one bulb is affected. That said, these issues could also be symptoms of other problems, like electrical wiring issues, corrosion, or a dying battery—so you may want to do some troubleshooting before deciding to replace your headlight bulb.
Visible damage: If the front end of your vehicle recently took some damage, you might need to replace one or both headlights’ bulbs.
How often should a headlight bulb be replaced?
It depends on the type of bulb: Halogen headlight bulbs are usually the least expensive bulb type, but they also have the shortest lifespan. HID headlight bulbs, including xenon bulbs, and LED headlight bulbs last longer but are significantly more expensive.
Here are the common lifespans of different types of headlight bulbs:
Halogen headlight bulbs: 500 to 2,000 hours of use
HID headlight bulbs: 2,000 to 3,000 hours of use
LED headlight bulbs: 10,000 hours of use or more
Depending on how heavily you use your vehicle’s headlights or headlamps, bulb lifespans can commonly shake out to somewhere between 5 and 10 years.
Sometimes, headlight bulbs may fail prematurely due to corrosion from excess moisture, wiring problems, or physical damage. But when one headlight bulb burns out, its pair often doesn’t have much time left—so it’s usually a good idea to replace them both at once.
Can I replace my headlight bulb myself?
Replacing a headlight bulb is one of the easiest vehicle repairs drivers can make on their own—and it can often save money by eliminating the labor cost you’d have to pay at a repair shop.
That said, replacement will involve working with the vehicles’ electrical components so you should disconnect your battery before getting started. Refer to your owner’s manual or a trusted mechanic for the bulb specifications you’ll need.