How Do You Tell If a Brake Light Bulb Is Not Working?

Brake lights are essential safety devices on many vehicles, and when they go out, it can lead to accidents. But how do you tell if a brake light is not working? In this article, we will explore the different ways to test for a brake light bulb that is not working, and provide instructions on how to replace it if necessary.

What to Do if You Notice a Brake Light is Not Working?


If you notice that your brake light is not working, there are a few things that you can do to troubleshoot the issue.

– First, check to see if the light bulb is installed properly. If the bulb is not lighting up, then the problem may be with the wiring or the switch.

– If the light bulb is installed correctly, but the switch is not working, then the problem may be with the brake lines or brakes themselves.

– If everything else seems to be checked and tested and the light still does not work, then it may be necessary to replace the entire brake light assembly.

How to Test if a Brake Light Bulb is Broken?

If you’re having trouble seeing your car’s brake lights in the dark, it might be time to replace your brake light bulb. But before you do, you can test to see if the bulb is actually broken. Here’s how:

Turn on your car’s emergency flashers. Position a battery-powered light near the lens of the bulb and turn on the light. If the bulb is working, the light should shine through the lens and appear on the other side of the bulb. If the bulb is not working, the light will not shine through the lens and will appear on the other side of the bulb.

Check for Loose Connections


If you notice that your brake light is not working, the first thing you should do is check for loose connections. Verify that all of the wiring is securely fastened to the car and to the light sensor. If you notice any loose connections, be sure to fix them before continuing.

If your brake light still does not work, then you may need to replace the bulb. Brake lights use small bulbs that can get very hot over time, so it’s important to keep them in good condition. Check your owner’s manual to see if your car requires a specific type of brake light bulb, and purchase one if necessary.

Replace a Brake Light Bulb


If you’ve ever had to change a brake light bulb on your car, you know how frustrating it can be when one of the bulbs doesn’t work. Brake light bulbs are notorious for going out, and if yours is broken, it can make driving in the dark very dangerous. Fortunately, replacing a brake light bulb is a relatively easy task. Here’s how to do it:

  1. Remove the covering from the headlight by unscrewing the screws on either side.
  2. Remove the headlight assembly by gently pulling it away from the car.
  3. Make note of which light bulb goes where – usually there are two bulbs per headlight.
  4. Remove the broken bulb and replace it with a new one.
  5. Reattach the headlight assembly and screw it back in place.
  6. Replace the cover and screws on either side of the headlight.


If you’re having trouble getting your car to stop in the middle of the street, it’s probably not just that your brakes need repair. It’s also possible that one or more brake light bulbs are out. Brake lights illuminate when the brakes are applied and help drivers see where they’re going at night or in low light conditions. If one or more brake light bulbs aren’t working, it can make it difficult for the driver to know when to apply the brakes and cause accidents. If you notice any of these symptoms, be sure to get a professional inspection as soon as possible so that you can get your car fixed and avoid an accident.