How to Replace Tail Light Bulbs

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You can easily replace tail light bulbs with a few simple tools and the right bulb. Start by accessing the back of the tail light from behind by going through the trunk or by removing the entire assembly. You can then grip the back of the light socket from behind the tail light, rotate it to the left, and pull it out so you can slide out the old bulb and pop in a new one that matches it. Then, replace anything you had to remove to access the back of the light. Check out the tips below for more help with changing a tail light bulb that needs to be replaced.

Part 1
Part 1 of 2:

Removing the Old Tail Light Bulb

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    Pull the trunk release button from the driver’s side of the vehicle to pop it open or pull the handle on your tailgate to drop it down so you can access the backside of your tail light assembly. [1]
    • Some vehicles have a button you can press on the trunk itself to pop it open.
    • You may need to pull up on the tailgate when you pull on the handle in order to lower it.
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    With your trunk open or your tailgate down, look inside your vehicle for a sturdy fabric liner or a plastic panel covering the backside of your tail light. Find the edge where the fabric or panel meets the plastic trim of your vehicle and use your hands to pull back the fabric or remove the panel to expose the backside of your tail light. [2]
    • Don’t completely remove a fabric so you can put it back under the trim once you’re finished.
    • Some plastic panels may need to be completely removed, but will have small brackets that allow you to easily fit it back into place.
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    If your vehicle doesn’t have a fabric liner or panel that allows you to access the backside of your tail light, look for bolts or screws on the side of the lens covering the tail light. Use a screwdriver to remove the screws or a wrench to remove the bolts and gently slide out the whole light assembly so you don’t disconnect the wires attached to the backside of it. [3]
    • Place the fasteners in a plastic bag and set them aside so you can replace them later.
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    On the backside of the tail light assembly you’ll see the back of the light socket with wires connected to it. Locate the socket holding the burned-out bulb and grip the rear of it. Rotate the socket to the left and pull it out of the backside of the light. [4]
    • Be careful not to stretch or pull out the wires connected to the sockets.
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    Gently grip the bulb by the metal part of the plug and depress it slightly into the socket to release it. Then, slide it out of the light socket. [5]
    • Some bulbs may require you to unscrew them to remove them from the socket.

    Warning: Don’t grip the bulb by the glass or you could break it, making it very difficult to remove.

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Part 2
Part 2 of 2:

Installing the New Tail Light Bulb

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    Wear a pair of nitrile gloves to keep the natural oils on your hands from getting onto the bulb. When the bulb heats up from being used, the oils can damage it and cause it to burn out prematurely. [6]
    • You can find nitrile gloves at many department stores, auto parts stores, and online.
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    Choose a replacement bulb the same size and wattage as the old bulb. Check the terminals on the end of the bulbs to make sure they match. Line up the terminal at the end of the bulb with the plug in the socket and gently insert the new bulb into the socket until it clicks into place. [7]
    • Bring the old bulb with you to compare so you can be sure you get a matching bulb.
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    With the new bulb in the socket, put the socket back into the tail light assembly from the rear. Once it’s in place, turn it to the right until it clicks into place so it’s held securely. [8]
    • Gently wiggle the socket to make sure it’s held firmly in the assembly.
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    If you accessed the backside of your tail light through your trunk or tailgate, cover the rear of the tail light assembly with the fabric liner that you pulled back or reinstall the plastic panel where you removed it. If your panel has brackets to hold it in place, line them up with their connections on your vehicle and push the panel until you hear them snap into place. [9]
    • The fabric liner may need to be tucked back under the trim of your vehicle so it’s held securely.
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    If you had to pull out the entire assembly, slide it back into place from where you removed it. Replace the screws or bolts that you removed and tighten them well so your tail light is and secure. [10]
    • Make sure you replace all of the fasteners and tighten them fully so your tail light won’t be damaged by the movement of your vehicle.
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    Shut your trunk or raise your tailgate and pay close attention to make sure the bulb doesn’t fall out or rattle. Have a friend start your vehicle and press on the brake pedal so you can check the light to make sure it’s working. Then, with their foot on the brake or the e-brake engaged, have them put the vehicle into reverse to make sure all of the lights work. [11]
    • If you installed the bulb correctly but it still isn’t working, you may have a blown fuse or an electrical problem that needs to be inspected by a licensed mechanic.

    Tip: If the bulb falls out, you may not have plugged it into the socket properly. If it rattles, then double-check the fasteners to make sure they’re tight or check the socket to make sure you rotated it into place properly.

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Expert Q&A

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  • Question
    How do I apply bulb grease on a taillight bulb?
    Hovig Manouchekian
    Auto Repair & Design Specialist
    Hovig Manouchekian is an Auto Repair and Design Specialist and the Manager of Funk Brothers Auto, a family-owned business operated since 1925. With over 30 years of experience in the automotive industry, Hovig specializes in the process of auto repair and maintenance. He is also very knowledgeable in common automotive issues and needs including engine repair, battery replacement, and windshield accessory and maintenance. Hovig's knowledge and hard work have contributed to Funk Brothers Auto winning Angie's List Super Service Award for five consecutive years.
    Hovig Manouchekian
    Auto Repair & Design Specialist
    Expert Answer
    You can use a brush to apply bulb grease to the base and contacts of the bulb. This application serves as a shield against corrosion, enhances electrical conductivity, and eases future bulb removal. After applying the grease, reinstall the bulb securely with proper alignment, and subsequently verify the taillight's functionality. Be cautious not to apply an excessive amount of grease; a thin and even coating is ample for reliable protection.
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      References

      1. ↑ https://youtu.be/UxhOWFgbPkQ?t=42
      2. ↑ https://www.2carpros.com/articles/brake-lights-not-working
      3. ↑ https://youtu.be/kRoLfzkmYak?t=110
      4. ↑ https://www.hightechdad.com/2017/06/30/how-to-replace-the-rear-light-bulb-of-a-2013-hyundai-elantra-video/
      5. ↑ https://www.hightechdad.com/2017/06/30/how-to-replace-the-rear-light-bulb-of-a-2013-hyundai-elantra-video/
      6. ↑ https://www.hightechdad.com/2017/06/30/how-to-replace-the-rear-light-bulb-of-a-2013-hyundai-elantra-video/
      7. ↑ https://www.2carpros.com/articles/brake-lights-not-working
      8. ↑ https://www.2carpros.com/articles/brake-lights-not-working
      9. ↑ https://www.2carpros.com/articles/brake-lights-not-working
      1. ↑ https://youtu.be/kRoLfzkmYak?t=213
      2. ↑ https://www.hightechdad.com/2017/06/30/how-to-replace-the-rear-light-bulb-of-a-2013-hyundai-elantra-video/

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