Most headlight replacements take 15 minutes to an hour and cost $15 to $300 per bulb, depending on whether you do it yourself or visit a shop

Replacing a headlight is one of the simplest car maintenance tasks you can do yourself, but the actual process varies sharply by vehicle. Some cars let you reach the bulb from inside the engine bay with no tools. Others require you to remove the entire headlight assembly, which can mean taking off the bumper or fender. The cost difference between a DIY replacement and a shop visit is usually $50 to $200 in labor, plus the bulb itself.

The first step is identifying what type of bulb your car uses. Modern vehicles typically use one of three: halogen (the cheapest and most common), HID or xenon (brighter, more expensive), or LED (increasingly standard on newer cars). Your owner's manual lists the exact bulb type and wattage. Buying the wrong bulb wastes money and may not fit at all.

Key Takeaways

  • Check your owner's manual for the exact bulb type and part number before you buy anything, because halogen, HID, and LED bulbs are not interchangeable.
  • A DIY replacement takes 15 minutes to an hour on most vehicles, but some models require removing the bumper or fender, which can take several hours.
  • Halogen bulbs cost $10 to $30, HID bulbs run $50 to $150, and LED bulbs range from $50 to $300, depending on brand and quality.
  • If you are uncomfortable working under the hood or your vehicle requires disassembly, a mechanic shop or dealership can do the job for $50 to $200 in labor.

How to identify which bulb your car needs

Your owner's manual is the only reliable source. Look in the index for "headlight bulb," "bulb replacement," or "lighting." The manual will list the bulb type (H7, H11, 9005, etc.) and wattage. Write down this number before you go to an auto parts store.

If you have lost your manual, the dealership can tell you over the phone using your vehicle identification number (VIN), which is printed on your registration and on the dashboard near the windshield. Many auto parts stores also have lookup tools on their websites where you enter your year, make, and model. Do not guess or buy based on what you see online for a similar car — a one-year difference can mean a different bulb.

The DIY replacement process for most vehicles

Start with the engine off and cool. Open your hood and locate the back of the headlight assembly. You will see a plastic or rubber connector attached to the bulb. Twist it counterclockwise (or pull it straight out, depending on the design) to disconnect it from the bulb. The bulb itself usually twists out of the socket, though some pull straight out.

When you remove the old bulb, do not touch the glass on a new halogen bulb with your bare fingers — the oils from your skin can cause it to overheat and fail early. If you do touch it, wipe it clean with a lint-free cloth. Insert the new bulb by reversing the process: push or twist it into the socket, then reconnect the plastic connector. Turn on your headlights to confirm both bulbs work before you close the hood.

This process works for most sedans and crossovers. Some vehicles — particularly luxury brands and certain truck models — require removing the entire headlight assembly, which means unbolting it from the frame and sometimes removing the bumper. Your owner's manual will show whether your car is one of these. If it is, a shop visit usually makes sense unless you are comfortable with that level of disassembly.

When to take your car to a mechanic instead

If your owner's manual indicates that headlight replacement requires removing the bumper, fender, or the entire assembly, a shop is the faster choice. Labor costs typically run $50 to $200 depending on the vehicle and your location. A dealership will charge more than an independent shop, usually $100 to $300 in labor alone.

You should also visit a shop if you are not comfortable working under the hood, if you lack basic tools, or if you have never done this before and want to avoid damaging the connector or socket. A mechanic can also diagnose why the bulb burned out — repeated failures can signal an electrical problem that a bulb replacement alone will not fix.

Halogen, HID, and LED bulbs: what you are paying for

Halogen bulbs are the standard on most vehicles built before 2015 and many built after. They cost $10 to $30 per bulb and last 400 to 1,000 hours of use. They produce a yellowish light and run hotter than other types. Most auto parts stores stock them, and they are the cheapest option.

HID (high-intensity discharge) or xenon bulbs are brighter and whiter than halogen and last longer — typically 2,000 to 3,000 hours. They cost $50 to $150 per bulb. If your car came with HID headlights from the factory, you must replace them with HID bulbs; mixing types will not work. Some aftermarket HID kits exist for halogen vehicles, but they are not legal in all states and can blind oncoming drivers.

LED bulbs are increasingly standard on new vehicles. They last 25,000 to 50,000 hours, produce a bright white light, and run cool. Replacement LED bulbs for older vehicles cost $50 to $300 depending on brand and quality. If your car came with LED headlights, replacement usually requires going to a dealership because the entire assembly is sealed and not user-serviceable.

What to do if one headlight keeps burning out

A single bulb burning out is normal wear. But if the same headlight fails again within a few months, or if both bulbs fail at the same time, an electrical problem is likely. This could be a faulty socket, a corroded connector, or a charging system issue that is overvolting the bulbs.

A mechanic can test your charging system and inspect the socket and wiring for damage. Fixing the underlying problem costs more than replacing the bulb, but it prevents repeated failures and potential damage to other electrical components. If you replace the bulb and it fails again within weeks, do not keep buying bulbs — get the wiring checked.

Tools and supplies you need for a DIY replacement

For most vehicles, you need nothing more than the replacement bulb itself. Some cars require a screwdriver or socket wrench to remove the headlight assembly, but the bulb swap is usually tool-free. Check your owner's manual to see if any tools are listed for your specific vehicle.

Have a lint-free cloth or microfiber towel on hand if you are installing halogen bulbs, so you can wipe your fingers off the glass if you accidentally touch it. Wear gloves if you prefer to avoid any skin contact. Keep the old bulb in case you need to return it for a core charge or warranty claim — some retailers require the old bulb as proof.

Frequently Asked Questions

Can I replace just one headlight, or do I have to replace both?

You can replace just the burned-out bulb. However, if both bulbs are the same age, the other one will likely fail soon. Some drivers replace both at the same time to avoid a second trip to the shop, especially if labor costs are high. The choice is yours.

What is the difference between low beam and high beam bulbs?

Low beams (also called dipped beams) are what you use in normal driving. High beams are brighter and aimed higher for long-distance visibility on dark roads. They use different bulbs, and your owner's manual will specify the type for each. Some vehicles use the same bulb for both, controlled by a reflector inside the headlight.

Is it safe to drive with one headlight out?

It is legal to drive with one headlight in most states, but it is not safe. You have reduced visibility and other drivers may not see you clearly. Replace the bulb as soon as you can. If you are far from home, a temporary fix is to use your high beams when safe to do so.

Can I upgrade to brighter bulbs without changing the headlight assembly?

You can install a brighter halogen bulb in a halogen socket, but the improvement is modest. Upgrading to HID or LED bulbs in a vehicle designed for halogen requires replacing the entire headlight assembly and may not be legal in your state. Check your local vehicle code before attempting an upgrade.

How long do different bulb types actually last?

Halogen bulbs last 400 to 1,000 hours of use, HID bulbs last 2,000 to 3,000 hours, and LED bulbs last 25,000 to 50,000 hours. In real-world driving, that means halogen bulbs may need replacement every 1 to 3 years, HID bulbs every 3 to 5 years, and LED bulbs rarely during the life of the vehicle.