1. Vehicle failure: When the vehicle fails or has problems, some car sign lights will light up as warning instructions. Engine fault indicator lamp, battery indicator lamp, brake system indicator lamp, etc. These indicators are signals that the system automatically detects abnormal conditions and sends out, prompting you to carry out maintenance or repair.
2. Maintenance reminder: Some vehicles have regular maintenance reminder function. When the vehicle reaches the scheduled mileage or time interval, the maintenance light will light up to remind you to make an appointment for maintenance. This is to ensure that the vehicle maintains good working condition and performance.
3. System failure: The light on the ceiling lamp is caused by the failure of the vehicle electronic system or computer. At this time, park the vehicle in a safe place and contact a professional automobile maintenance technician for inspection and maintenance as soon as possible. .