Why Are All the Dashboard Warning Lights On?

[VanLyla]

Here are the reasons why all the dashboard warning lights in a car may illuminate: 1. CAN bus failure in the ECU, or poor contact at the ECU's CAN interface. 2. Excessive dirt and carbon deposits, causing abnormal air circulation and inaccurate control of normal air intake, leading to unstable gas content and poor engine performance. 3. Low fuel pressure combined with poor constant pressure performance results in low system atomization levels, making the car difficult to start. Below are the types of dashboard indicator lights: First category: Routine indicator lights, such as turn signal lights, light indicators, seat belt indicators, cruise control indicators, and parking indicators, which serve to indicate the operational status of various vehicle functions. Second category: Warning indicator lights, such as the fuel level indicator and windshield washer fluid level indicator. Third category: Fault indicator lights, including the engine (exhaust system) fault light, oil system fault light, and battery and charging system fault light. These fault indicators rarely light up under normal circumstances.