1. Gather the necessary tools and supplies, including a spare brake light bulb that matches the bulb type listed in the vehicle's owner's manual, a screwdriver, and a pair of gloves.
2. Open the trunk and locate the taillight lens cover for the side with the brake light that needs to be replaced. The taillight lens cover is typically secured by screws or clips.
3. Once you have located and removed the taillight lens cover, you should see the brake light bulb housing.
4. Remove the bulb housing from the taillight assembly by gently prying it loose.
5. Replace the old bulb with the new one. Ensure the new bulb is securely in place.
6. Reattach the bulb housing to the taillight assembly.
7. Replace the taillight lens cover and secure it in place.
8. Close the trunk.
9. Test the brake lights to ensure the replacement bulb is working correctly.
10. You can do this by pressing the brake pedal and confirming that the new brake light is illuminating.
If these steps do not help to fix the issue with the brake light, it is advisable to consult with a qualified mechanic or an auto repair shop for further assistance.