How many lights remain on after a car's self-check?
2 Answers
After a car's self-check, 5 lights remain on. When the car is powered on, it begins the self-check process, during which all dashboard lights illuminate and then turn off sequentially. Only the battery, EPC, engine fault light, handbrake warning light, and seatbelt warning light remain illuminated. The reasons for several red lights staying on after the self-check include: 1. Leakage of vehicle oil, brake fluid, gasoline, or coolant; 2. Malfunction in the vehicle's braking system; 3. Air leakage in the air pump or air reservoir; 4. Abnormal tire pressure; 5. Loose tire fastening screws; 6. Issues with vehicle turn signals, brake indicators, lighting, windshield wipers, or horn.
When I perform a pre-start self-check in my car, several indicator lights usually illuminate temporarily. These include the oil pressure warning light, which is shaped like an oil can; the charging system light, displaying a battery symbol; the engine malfunction light with an engine icon; as well as the ABS anti-lock braking system light and airbag light. The purpose of the self-check is to verify system functionality, so these lights should turn off after a few seconds. If they remain illuminated after the self-check is complete, it may indicate potential issues - for example, if the oil light stays on, it could mean insufficient oil or a pump malfunction, requiring prompt attention to prevent engine damage. I always pay close attention to this process while driving because it relates to vehicle safety, reminding us to perform regular maintenance and ensure all sensors are functioning properly.
