Most headlights take 5 to 15 minutes to replace, and you likely need only a screwdriver

Changing a headlight is one of the fastest maintenance tasks you can do yourself. The process varies by vehicle — some bulbs twist out from behind the headlight housing, others require you to remove a plastic cover or access panel first — but the basic steps are the same across most cars made in the last 20 years. You will need the replacement bulb (the correct type for your vehicle), a screwdriver or socket wrench, and sometimes a pair of gloves to keep oils off the new bulb.

The hardest part is usually finding which bulb burned out and getting your hands into the engine bay without scraping your knuckles. Once you know what you are looking for, the actual swap takes minutes.

Key Takeaways

  • Check your owner's manual or the inside of your headlight housing to find the exact bulb type your vehicle uses, because the wrong bulb will not fit or will not work.
  • Let the headlight cool for 10 to 15 minutes after driving before you touch it, because the housing gets hot enough to burn your skin.
  • Avoid touching the new bulb with bare fingers; skin oils can damage the bulb and shorten its life, so wear gloves or handle it by the base only.
  • If the bulb does not twist out easily or the housing is cracked, stop and take the car to a shop rather than forcing it.

Locate the burned-out bulb and get the right replacement

Turn on your headlights and walk around the front of your car to confirm which side is dark. Once you know which headlight failed, open your hood and look at the back of that headlight housing. You will see either a bulb socket (a plastic or rubber piece that twists counterclockwise) or an access panel that needs to be removed first.

Find the bulb type by checking three places in this order: your owner's manual (usually in the glove box), a label on the inside of the headlight housing itself, or the receipt from your last headlight replacement if you kept it. Common types are H7, H11, 9005, and 9006, but your vehicle may use something different. Buy the exact replacement before you start — a parts store can look it up by your vehicle's year, make, and model in seconds.

Remove the old bulb safely

Let the engine cool for at least 10 to 15 minutes if you have been driving. The headlight housing and bulb get hot enough to cause a burn. Once it is cool, locate the bulb socket behind the headlight housing and grip it firmly with your hand or a socket wrench, depending on the design. Twist counterclockwise — usually a quarter turn is enough — until the socket comes free from the housing.

Pull the socket straight out toward you. The bulb will either be attached to the socket (twist it counterclockwise to remove) or will fall out as the socket comes free. Set the old bulb aside. If the socket does not turn easily or feels stuck, do not force it; you risk cracking the plastic housing. Stop and take the car to a shop instead.

Install the new bulb without touching the glass

Put on a pair of latex or nitrile gloves, or handle the new bulb by its metal base only. Skin oils transfer to the glass and can cause the bulb to overheat and fail prematurely. If you have already touched the bulb with bare fingers, wipe it clean with a dry cloth before installing it.

Insert the new bulb into the socket, aligning the pins or tabs on the bulb base with the slots in the socket. Twist clockwise until it stops — you will feel a slight resistance when it is seated correctly. Do not overtighten. Slide the socket back into the headlight housing and twist clockwise until it is snug. Turn on your headlights to confirm the new bulb works.

What to do if the housing is hard to access

Some vehicles require you to remove a plastic cover, wheel well liner, or even the entire headlight assembly to reach the bulb. Check your owner's manual first to see if your car is one of them. If the manual shows that you need to remove parts, you will need a screwdriver or socket set and 20 to 45 minutes instead of 5 to 15.

If you are not comfortable removing panels or if the manual is unclear, a shop can do this task for $50 to $150 in labor, depending on the vehicle. The bulb itself usually costs $10 to $30. Weighing your comfort level against the cost is a reasonable choice — this is not a repair you have to do yourself.

Troubleshooting when the new bulb does not work

If you installed the new bulb and the headlight still does not turn on, first confirm that you twisted the socket all the way back into the housing. A socket that is not fully seated will not make electrical contact. Turn on the headlights and listen for a click; if you hear nothing, the socket may not be seated.

If the socket is fully seated and the light still does not work, the problem is likely a blown fuse or a wiring issue, not the bulb. Check your owner's manual for the fuse box location and the correct fuse for the headlights. A fuse that has blown will have a broken wire visible inside the clear plastic casing. If the fuse is intact, the electrical system needs diagnosis by a shop.

When to replace both headlights at once

If one headlight has burned out, the other is likely near the end of its life too. Headlights typically last 300 to 1,000 hours of use depending on the type and quality. If both bulbs are the same age, replacing both now means you will not have to do this job again in a few weeks.

The labor time is almost the same for one bulb or two — you are already in the engine bay and familiar with the process — so the only extra cost is the second bulb itself. Many drivers find it worth doing both at once to avoid a second trip.

Frequently Asked Questions

Can I drive with one headlight out?

Legally, no. Most states require both headlights to be working, and you can be cited for a burned-out bulb. Practically, driving at night with only one headlight is unsafe because your visibility is reduced and oncoming drivers may not see you clearly. Replace it before your next night drive.

Why does the new bulb keep burning out?

The most common cause is touching the bulb with bare fingers during installation — skin oils cause premature failure. Less common causes are a faulty socket, a wiring problem that sends too much power to the bulb, or a cracked headlight housing that lets moisture in. If the bulb burns out again within a few weeks, have a shop check the electrical circuit.

Do I need to remove the wheel to change a headlight?

Not usually. Some vehicles do require wheel removal to access the headlight housing, but most do not. Check your owner's manual or look at the back of the headlight housing from the engine bay first. If you can reach the bulb socket without removing anything, you do not need to remove the wheel.

What is the difference between HID and LED headlights?

HID (high-intensity discharge) and LED headlights are brighter and last longer than traditional halogen bulbs, but they cost more to replace — $50 to $200 per bulb instead of $10 to $30. If your car has HID or LED headlights, the replacement process is the same, but the bulb type is different. Always buy the exact type your vehicle uses.

Should I replace the headlight housing if it is cloudy or yellowed?

A cloudy housing reduces light output and looks worn, but it does not prevent the headlight from working. You can clean it with a headlight restoration kit (around $10 to $20) or replace the entire housing (usually $100 to $300 in parts). Cleaning is worth trying first if the housing is not cracked.