The third brake light, also known as the center high-mount stop lamp (CHMSL), is an important safety feature in your 2017 Hyundai Elantra. If you've noticed this light isn't working, it's crucial to replace it promptly to ensure your vehicle remains safe and compliant with traffic regulations.

Bulb Type and Location

For the 2017 Hyundai Elantra, the third brake light bulb type is typically a 1156 or 7506. This bulb is located at the top center of the rear window, inside the vehicle. Accessing it requires opening the trunk and locating the bulb holder underneath the light assembly.

Replacement Procedure

Here's a step-by-step guide to replace your Elantra's third brake light bulb:

1. Open the driver's side door and release the trunk.

2. Locate the bulb access point under the third brake light inside the trunk.

3. Disconnect the electrical connector by pinching the bottom and pulling it out.

4. Twist the bulb holder counterclockwise to remove it.

5. Press down on the old bulb and twist it counterclockwise to extract it from the holder.

6. Insert the new bulb into the holder, aligning its pins with the slots.

7. Push the new bulb down and twist it clockwise to secure it.

8. Reinsert the bulb holder, ensuring the large tab faces the rear of the car.

9. Twist the holder clockwise to lock it in place.

10. Reconnect the electrical connector.

11. Test the new bulb to ensure it's working correctly.

Important Tips

  • Avoid touching the glass part of the new bulb with your bare hands. Use gloves or a clean cloth to handle it.
  • Make sure to purchase the correct bulb type (1156 or 7506) for your specific Elantra model.
  • If you're uncomfortable performing this task, consider seeking help from a professional mechanic.

Tools Required

Fortunately, this replacement typically requires no special tools. However, having a clean cloth or gloves on hand is advisable for handling the new bulb.

Safety Considerations

Always ensure your vehicle is parked safely and the engine is off before beginning any maintenance work. If you're unsure about any step in the process, it's best to consult your vehicle's manual or seek professional assistance.

Replacing your 2017 Hyundai Elantra's third brake light bulb is a straightforward process that can be completed in about 5-10 minutes. Regular maintenance of all your vehicle's lights, including the third brake light, is essential for your safety and the safety of other drivers on the road.