License plate lights burn out and need replacing just like any other bulb

Your license plate light is a small bulb mounted above or below your rear license plate. It illuminates the plate so police and cameras can read it at night. Most states require it to work, and a burned-out bulb can result in a traffic citation. Replacing it takes 10 to 30 minutes and costs between $5 and $25 for the bulb itself, depending on your vehicle.

The job is straightforward enough that most owners handle it themselves. You'll need a screwdriver (usually Phillips head), possibly a socket wrench, and a replacement bulb. The bulb type varies by vehicle — common types are 194, 168, or 921 — so check your owner's manual or the existing bulb before you buy.

Key Takeaways

  • A burned-out license plate light is a traffic violation in most states and can result in a ticket.
  • Replacement bulbs cost $5 to $25 and are available at auto parts stores, big-box retailers, and online.
  • The job requires only basic tools — usually a screwdriver and a socket wrench — and takes less than an hour.
  • Check your owner's manual or the existing bulb to find the correct bulb type before purchasing a replacement.
  • If you're uncomfortable working on your vehicle, a mechanic or dealership can replace it for $20 to $50 in labor.

Locate the bulb housing and remove the lens cover

The license plate light housing is mounted directly above or below your rear license plate. On most vehicles, the entire fixture is held in place by one or two screws visible from outside the bumper. Use a Phillips head screwdriver to remove these screws, then gently pull the housing away from the bumper.

Some vehicles have a lens cover that twists counterclockwise to remove. Others have a housing that opens like a small door. Check your owner's manual for the specific design of your vehicle — the manual will show you exactly which direction to turn or pull. If you force it the wrong way, you risk cracking the plastic lens.

Once the housing is open, you'll see the bulb socket. On some vehicles, the socket twists out of the housing. On others, it pulls straight out. Again, your manual will show the correct method. If you don't have the manual, a quick online search for your vehicle's year, make, and model plus "license plate light replacement" will usually turn up a photo or video.

Remove the old bulb and install the new one

Once the socket is out, the bulb itself either twists counterclockwise or pulls straight out, depending on the bulb type. Most license plate bulbs are push-fit, meaning you push them in and they stay in place with a small clip. Twist-fit bulbs have a small metal base that rotates.

Before you install the new bulb, check that it matches the type you removed. The bulb number is printed on the base. If you bought the wrong type, the bulb won't fit or won't work. Once you've confirmed the match, insert the new bulb using the same motion you used to remove the old one — push or twist, depending on the type.

Push the socket back into the housing until it clicks or seats fully. Then reinstall the lens cover or housing door and tighten the mounting screws. Don't overtighten the screws; they're holding plastic, not metal, and can strip easily.

Test the light before you finish

Before you consider the job done, turn on your headlights and check that the license plate light is working. Have someone stand behind your vehicle or use your phone camera to confirm the bulb is lit. If it's not, the bulb may not be seated correctly, or you may have installed the wrong type.

If the light still doesn't work after you've reseated the bulb, the socket itself may be damaged or the wiring may have a problem. At that point, it's worth taking the vehicle to a mechanic, because the issue is no longer a straightforward bulb replacement.

Finding the correct bulb type for your vehicle

License plate bulbs come in several standard types, and using the wrong one will either prevent it from fitting or cause it to fail quickly. The most common types are 194, 168, 921, and 912. Your owner's manual will list the correct type, or you can check the base of the old bulb before you remove it.

If you've already removed the old bulb and can't find your manual, take a photo of the bulb and bring it to an auto parts store. Staff can match it to the correct replacement. You can also search online for your vehicle's year, make, and model plus "license plate bulb type" — most manufacturer websites and owner's manual databases will have this information.

When you buy the bulb, purchase one extra. License plate bulbs are inexpensive, and having a spare means you won't be without a working light if the replacement burns out before you expect it.

When to take your vehicle to a mechanic instead

If you're not comfortable working on your vehicle, or if you don't have the tools, a mechanic or dealership can replace the bulb for you. Labor costs typically run $20 to $50, plus the cost of the bulb. This is a quick job — most shops can do it while you wait.

You should also see a mechanic if the light doesn't work after you've installed a new bulb. This suggests a wiring problem or a damaged socket, both of which require electrical diagnosis. Trying to fix these yourself can damage other parts of your vehicle's electrical system.

Some dealerships will replace a license plate bulb for free if your vehicle is still under warranty, so it's worth calling ahead before you schedule an appointment.

Frequently Asked Questions

Can I drive with a burned-out license plate light?

Technically, no. A burned-out license plate light is a traffic violation in most states. Police can stop you for it, and you can receive a citation. The fine varies by state but typically ranges from $20 to $100. It's also a safety issue — the plate needs to be visible at night for identification and traffic cameras.

How often do license plate bulbs burn out?

Most license plate bulbs last 500 to 1,000 hours of use. If your light is on whenever your headlights are on, that's roughly two to four years of typical driving. Some bulbs fail sooner if there's moisture in the housing or if the vehicle is exposed to extreme temperature swings.

What if I can't get the housing open?

Don't force it. Check your owner's manual first — the housing may twist, pull, or open in a direction you haven't tried. If the manual doesn't help, search online for a video specific to your vehicle's year and model. If it's still stuck, a mechanic can open it without damaging the lens.

Do I need to disconnect the battery before replacing the bulb?

No. License plate lights draw very little power, and disconnecting the battery is unnecessary for this job. Just make sure your headlights are off before you start working, so you don't accidentally touch a hot bulb.

Can I use an LED bulb instead of the original type?

Yes, as long as it's the same size and base type as the original. LED bulbs last much longer than incandescent ones and draw less power. Make sure the LED bulb you buy is rated for your vehicle's voltage — most are 12-volt for standard cars. Check the packaging to confirm compatibility with your vehicle's year and model.