Tools you'll likely need:
* Phillips head screwdriver (possibly a trim tool or panel removal tool)
* New third brake light assembly
Steps:
1. Prepare the Vehicle: Park your Prizm on a level surface, engage the parking brake, and turn off the engine.
2. Access the Third Brake Light: This is usually accessed from inside the trunk. Open the trunk. You'll likely need to remove some interior trim panels to reach the light assembly. This often involves:
* Locating clips or screws: Carefully inspect the area around the brake light. You'll find either plastic clips holding the trim panel in place or small screws.
* Removing the trim panels: Gently pry the trim panels away from the body using your fingers or a trim tool. Work slowly to avoid breaking any clips. Be mindful of any wiring harnesses behind the panels.
3. Disconnect the Electrical Connector: Once you have access to the third brake light assembly, locate the electrical connector. Gently but firmly disconnect it. You may need to squeeze the connector's retaining clips to release it.
4. Remove the Third Brake Light Assembly: The light assembly might be held in place with clips or screws. Carefully remove these fasteners. Some models have a retaining nut or bolt. Gently pull the light assembly away from the vehicle.
5. Install the New Third Brake Light Assembly: Carefully align the new brake light assembly in place. Secure it using the same fasteners you removed in the previous step.
6. Reconnect the Electrical Connector: Reconnect the electrical connector, ensuring it's securely attached.
7. Reinstall the Trim Panels: Carefully reinstall the trim panels, making sure they are properly seated and all clips are engaged.
8. Test the Brake Light: Close the trunk and test the third brake light by pressing the brake pedal. Make sure it illuminates properly.
Important Considerations:
* Broken Clips: Be extra careful during the trim panel removal. If you break any clips, you may need to replace them to ensure a proper fit. You can usually find replacement clips at an auto parts store.
* Wiring: Handle the wiring harness carefully. Avoid pulling or stretching the wires. If the wires are damaged, you'll need to repair or replace them before reinstalling the brake light.
* Bulb Replacement (instead of whole assembly): Sometimes only the bulbs inside the assembly need replacement. Check if the bulbs are replaceable before buying a whole new assembly. This would simplify the process significantly.
If you're not comfortable performing this repair yourself, it's always best to take your Prizm to a qualified mechanic. They have the expertise and tools to complete the job safely and efficiently.
