What Causes All Dashboard Warning Lights to Illuminate?

1 Answers
LaJeffrey
07/30/25 4:52am
Reasons for all dashboard warning lights illuminating: 1. CAN bus failure in the ECU, poor contact in the ECU's CAN interface; 2. Excessive dirt and carbon deposits causing abnormal air flow, preventing accurate control of normal air intake volume, resulting in unstable gas content and poor engine performance; 3. Low fuel pressure combined with poor constant pressure performance leads to inadequate system atomization level, making the vehicle difficult to start. The car dashboard is a device that reflects the working conditions of various vehicle systems, and dashboards vary among different vehicles. Indicators or warning lights on the dashboard include coolant level warning light, fuel level indicator, washer fluid level indicator, charging indicator, high/low beam indicator, transmission gear indicator, ABS (Anti-lock Braking System) indicator, traction control indicator, airbag warning light, etc.
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