What is displayed on the dashboard when the car's power is turned on?
3 Answers
Different car models display different information on the dashboard when the power is turned on. Just remember that after starting the vehicle, it is normal if no warning lights are displayed on the dashboard (except for door and seatbelt lights). The following is an introduction to the dashboard: 1. Introduction: The car dashboard is a device that reflects the working conditions of various vehicle systems. 2. Types of indicator lights: Coolant level warning light, fuel level indicator, washer fluid level indicator, charging indicator, high/low beam indicator, transmission gear indicator, anti-lock braking system (ABS) indicator, traction control indicator, airbag (SRS) warning light, etc.
When the car's power is turned on, those small lights on the dashboard start to illuminate. The most common ones I see are the engine malfunction light, battery charging indicator, oil pressure light, ABS anti-lock braking light, and airbag light. These are part of the system's automatic check, which we call the self-test process. They light up for a few seconds to check for any abnormalities and then normally turn off. If any light doesn't go off, for example, if the battery light stays on, it might indicate a problem with the alternator; an illuminated engine light could mean an issue with the emission system. Older cars have simpler functions in this regard, but modern cars also include tire pressure monitoring lights and electronic stability control lights, among others. Remember, this is about driving safety. If any light behaves abnormally, be sure to take it to a repair shop immediately—don't wait until something happens on the road.
The moment the power is turned on, the dashboard activates the self-check system. Various warning lights on the car light up as if having a party: the battery light indicates the charging status, the engine light checks for emission issues, the oil light monitors the lubrication system, and the ABS and airbag lights are part of the active safety test. After a few seconds, they should turn off as expected, proving the system is OK. If they stay on, such as the battery light not turning off during a cold start in winter, it might indicate an aging battery or a faulty alternator. Different cars have variations; my old Japanese car had fewer lights, while modern electric vehicles with LCD dashboards can even display charging status and battery health. Overall, this step helps you quickly assess the vehicle's condition and avoid the risk of breaking down midway.
