What is the reason for the Corolla's automatic lights staying on all the time?

[StPeter]

Corolla's automatic lights staying on all the time may be caused by the sensor on the front dashboard being covered. Additional information: Corolla: The Corolla, formerly known as the Corolla, is a brand of Toyota. The Corolla is equipped with Michelin (215, 45, R17) tires, TRD Sportivo high-performance shock absorbers, TRD TF4 17-inch sport rims, reinforced clutch, and high-performance brake pads to ensure ideal sports performance. Appearance: The Corolla has a moderate, grand, and stable appearance, with a simple interior style, a regular center console design, and spacious and comfortable seats.

[McViolet]

My Corolla also had the issue of the automatic lights staying on last year. At first, I thought it was just dust covering the light sensor, but later found the problem was more complicated. After inspection, it might be a problem with the photosensitive sensor, which is responsible for turning the lights on and off based on external lighting conditions. If the sensor is aging or blocked by dirt, it can misjudge and cause the lights to stay on. Another common cause is a faulty control module—a minor glitch in the car's computer system might continuously send the signal to turn on the lights, which requires professional diagnostic equipment to identify. A short circuit in the wiring is also a potential factor, such as exposed wires causing continuous current supply to the bulb. To confirm, I suggest you first check if there are any error messages on the dashboard, then clean the small sensor on the windshield with a soft cloth. If that doesn’t work, it’s best to visit a 4S shop for a diagnostic computer scan. Leaving it unresolved not only drains the battery quickly but could also affect driving safety and battery lifespan—get it fixed as soon as possible.

[LeLucia]

I remember one time when a friend came over in his Corolla, and the automatic lights just wouldn't turn off, which really frustrated him. This issue is usually caused by a faulty light sensor—that little device detects ambient brightness, and if it's broken, it can keep the headlights on constantly. Another possibility is that the settings were accidentally adjusted, like turning off the automatic headlight mode in the car's menu, but if the operation isn't done correctly, the lights might stay on. Wiring issues shouldn't be overlooked either—stuck relays or faulty fuses can cause continuous power supply. For troubleshooting, I'd recommend simple steps: clean the sensor area and try rebooting the car's infotainment system. If that doesn't work, avoid driving at night to prevent overly bright lights from disturbing others, and get it repaired as soon as possible. Abnormal headlights can easily attract police attention or drain the battery prematurely, which is quite annoying.

[SanAyla]

I'm quite curious about the issue of the Corolla's automatic lights staying on constantly. After researching, I found the main cause is the photosensitive control unit. This component is responsible for detecting changes in light levels, and when it malfunctions, it can cause the headlights to remain on continuously. System software errors may also trigger bugs, such as conflicts after a car system update. On the electrical side, short circuits or rust at grounding points can lead to abnormal activation of the circuit. For prevention, avoid parking in damp environments to prevent circuit corrosion. The repair isn't complicated but requires professional tools to calibrate the sensor. This approach saves power while ensuring driving safety.