1. Check the Trunk Lid Switch:
* Locate the switch: This is usually found on the trunk lid itself, near the latch mechanism. It's a small button or lever that's activated when the trunk closes.
* Inspect for damage: Look for any visible damage to the switch, such as cracks, broken parts, or corrosion. A loose connection is also possible.
* Test the switch (most important step): With the trunk open, carefully disconnect the electrical connector from the switch. If the light goes off, the switch is faulty and needs replacement. If the light stays on, the problem lies elsewhere in the circuit. You can also try gently pushing and pulling on the switch itself while observing the light to see if it flickers or changes state.
2. Check the Wiring:
* Inspect the wiring harness: Examine the wiring harness leading from the switch to the trunk light for any frayed wires, broken insulation, or loose connections. Pay close attention to where the wiring goes through the trunk hinges; flexing can cause damage.
* Trace the wiring: Follow the wiring harness to the trunk light itself and check for similar issues at that connection.
* Look for shorts: A short circuit in the wiring could also cause the light to stay on. This requires more advanced troubleshooting with a multimeter to check for continuity and shorts.
3. Check the Trunk Light Bulb (less likely):
* While less common, a faulty bulb can sometimes cause the light to stay on. It might draw less current than expected, which can lead to the system believing the trunk is still open. Try replacing the bulb with a new one.
4. Check the Body Control Module (BCM) (least likely):
* In rare cases, a problem with the BCM (Body Control Module) can cause issues with the trunk light. This is the least likely cause and requires a diagnostic tool to check for codes related to the trunk light circuit. This is best left to a professional.
Replacement and Repair:
* Switch Replacement: If the switch is faulty, you'll need to replace it. You can find replacement switches at auto parts stores. The replacement involves disconnecting the old switch, removing it, and connecting the new one.
* Wiring Repair: If you find damaged wiring, you'll need to repair or replace the affected sections. This may require soldering and electrical tape.
* Professional Help: If you're not comfortable working with car electrical systems, it's best to take your Intrepid to a qualified mechanic.
Important Safety Note: Always disconnect the negative terminal of your battery before working on any car electrical system to prevent short circuits and potential injury.
