What Causes the Trunk Light to Stay On?
2 Answers
The specific reasons for the trunk light staying on are as follows: Trunk Not Fully Closed: First, check if the trunk is completely closed. If not, simply re-close the trunk to resolve the issue. Ensure there are no obstructions preventing the trunk from closing properly. Faulty Trunk Sensor Switch: There is a push-button switch on the side of the trunk door that controls the trunk light. When the trunk is closed, the switch is pressed, turning off the light. When the trunk is opened, the switch is released, turning on the light. If the switch is faulty, it may need to be repaired at a 4S shop.
I found that the trunk light staying on constantly might be due to the trunk not being fully closed or something stuck in the gap, like clothes blocking the signal. Switch malfunctions are also quite common, especially in older cars where the button gets stuck in the open position or dust causes it to fail. Electrical issues are another factor—worn or short-circuited wires can keep the light on continuously, and a loose ground wire can also cause abnormal power supply. I once neglected this issue, resulting in a dead battery overnight and the car not starting. Now, I regularly check if the trunk is securely closed and wipe the switch with a soft cloth to prevent dirt buildup. I recommend you first try pressing the switch a few times or firmly closing the trunk to observe any changes in the light. If that doesn’t work, visit a professional repair shop as soon as possible to avoid more troublesome issues like electrical leaks or safety hazards.
