If one of your Forte’s rear lamps is out, you can replace the bulb yourself with a few basic tools. This guide walks you through a safe, step-by-step process to swap the tail light bulb on a 2017 Kia Forte and verify it’s functioning properly.
What you’ll need
Before you begin, gather the items you’ll need and confirm you have the correct bulb type for your specific rear light function (tail, brake, turn signal, or reverse). Exact bulb specifications can vary by trim and region, so check the old bulb or the owner’s manual if you’re unsure.
- Replacement bulb(s) matching the exact specification used by your rear light cluster
- Clean gloves or a lint-free cloth to avoid getting oils on the bulb glass
- Trim removal tool or a flat-head screwdriver (optional, for lifting trunk-liner panels)
- Small flashlight (optional, for better visibility inside the trunk)
Having the correct bulb type is essential because the Forte may use separate bulbs for tail/ brake, turn signal, and reverse. If you’re uncertain, remove the existing bulb and compare it to a replacement or consult the owner’s manual or parts counter.
Step-by-step procedure
Accessing the tail light
To begin, you’ll need access to the rear light housing from inside the trunk. This usually requires removing a portion of the trunk liner so you can reach the bulb socket without forcing or bending the panel.
- Open the trunk and locate the area behind the tail light you’re servicing. Identify the plastic liner or panel that covers the back of the light assembly.
- Release the liner by removing clips or screws as needed, then pull the panel away to expose the bulb socket.
- Visually confirm you can clearly see the bulb socket and the electrical connector connected to it.
Access is the key to a clean, safe bulb change. If the liner is stubborn, use a trim tool gently to avoid cracking the plastic.
Installing the new bulb and reassembly
With access established, replace the bulb and reassemble the trunk area. Handle the bulb carefully and ensure everything is secured before testing.
- Detach the electrical connector from the bulb socket by pressing the release tab and pulling straight out.
- Twist the bulb socket counterclockwise about a quarter-turn to release it from the housing, then pull the old bulb straight out of the socket.
- Grasp the new bulb with a clean glove or cloth, insert it into the socket, and twist the socket clockwise to lock it back into the housing.
- Reconnect the electrical connector to the bulb socket. Test the light by turning on a dimmer or headlights to verify the tail light, brake light (if applicable), and turn signal functions work correctly.
- Reinstall the trunk liner or access panel and secure any clips or screws you removed. Close the trunk and perform a final test with the vehicle parked and the lights on.
If the new bulb doesn’t illuminate, recheck that you installed the correct bulb and that the socket is fully seated. A blown fuse or a faulty socket could also cause the light to stay dark, in which case consult the owner’s manual or a professional technician.
Tips and cautions
Bulbs for the Forte’s rear lighting may differ by position (tail, brake, turn, reverse). Always replace with the exact specification and avoid touching the glass with bare skin. Make sure the car is off and the keys are removed before starting, and allow bulbs to cool if the car was recently driven.
- Test all functions (tail, brake, turn, and reverse) after replacement to confirm proper operation
- Dispose of old bulbs according to local regulations
- If you encounter resistance when removing the liner or socket, stop and re-check alignment to avoid damaging clips or wiring
For drivers who are uncomfortable with the procedure or who encounter non-standard setups (disabling trim pieces, regional variations), a certified technician can perform the replacement quickly and safely.
Summary
Changing a tail light bulb on a 2017 Kia Forte involves gaining access to the rear light behind the trunk liner, removing the old bulb from its socket, installing a correctly specified replacement, and reassembling the trunk area. Always handle bulbs with care, verify you have the right bulb type, and test the lights before concluding the job.


