Why is the vehicle system information indicator light constantly on?
2 Answers
The reasons for the vehicle system information indicator light staying on are: the driver's seat or passenger seat seatbelt is not fastened, insufficient fuel in the tank, or insufficient voltage. When the engine is not started (without ignition), the brake fluid circuit remains inactive. If the vehicle still won't start while pressing the brake pedal, check whether the brake lights illuminate when braking. If the brake lights don't turn on, it indicates a faulty brake switch causing incorrect signal transmission and preventing startup. If the brake lights function normally, use diagnostic equipment to check for vehicle issues. The vehicle information system is a device that enables drivers to promptly understand the vehicle's operational status and external information through onboard electronic equipment during driving.
When the system information light comes on, I always worry if there's something wrong with the car. Last time this happened to my car, I checked the manual and realized it could indicate an issue with the engine management system or an emission fault, such as a faulty oxygen sensor or a clogged catalytic converter. Sometimes, it can also be triggered by a loose fuel cap after refueling. A yellow light isn't too urgent, but if it's red or flashing, you should stop immediately and call a tow truck. I suggest not driving it hard—first, check if the oil level is normal and if the tire pressure is sufficient, as these minor issues are easy to fix. If you can't figure it out, it's best to go to a repair shop and use a scanner to read the fault codes to avoid bigger expenses down the line. Safety first—driving a problematic car is risky.
