Where is the sunlight sensor located on the Teana?
2 Answers
The sunlight sensor on the Teana is positioned as a small circular sensor at the front center of the dashboard, near the air vent on the windshield side of the instrument panel. Principle of the sunlight sensor: The sunlight sensor is utilized in the vehicle's automatic air conditioning control system. Its function involves using a photodiode to detect changes in sunlight intensity, thereby adjusting the air conditioning's output temperature and airflow volume. Below are precautions for sensor inspection: 1. Do not use analog multimeters: Unless specifically instructed during testing, avoid using analog multimeters to test the ECU and sensors. Instead, use a high-impedance digital multimeter or an automotive multimeter. 2. Prohibit the use of spark testing: Do not use spark testing to check the continuity of transistor circuits. Avoid using ordinary test lights to test any electrical devices connected to the ECU to prevent transistor damage. For pulse circuits, use LED lights or an oscilloscope for inspection. 3. Prevent moisture exposure to the ECU and sensors: It is essential to protect the ECU and sensors from moisture. Do not damage the sealing devices of the microcomputer or sensors, and never rinse them with water. The ECU must also be protected from severe vibrations.
The sunlight sensor for the Teana is usually located in the middle of the top part of the windshield, right above the dashboard near the interior rearview mirror. I've driven this car for many years, and once while cleaning the inside of the windshield, I felt a small dot or raised module—that's where it senses sunlight intensity. The automatic climate control system uses it to monitor changes in outside light, helping to adjust the cabin temperature automatically. Especially during strong midday sunlight in summer, the air conditioning fan speed and cooling will increase. Just keep that area clean; don’t cover it with tint or dirt, or the AC might malfunction, making you feel like the cabin temperature keeps fluctuating. Overall, it’s a small design feature but has a big impact on driving comfort, so it’s worth paying attention to.
