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Why Are All the Warning Lights On?

1 Answers

DeJanelle

07/25/25 12:25am

The reasons for all the warning lights on the car dashboard being illuminated are as follows: 1. CAN bus failure in the ECU, or poor contact at the ECU's CAN interface. 2. Excessive dirt and carbon buildup, causing abnormal air flow and preventing accurate control of the normal air intake, leading to unstable gas content and making the engine unable to operate properly. 3. Low fuel pressure combined with poor constant pressure performance results in low system atomization levels, making the car difficult to start. 4. Various indicator or warning lights are installed beneath the dashboard cover, such as the 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, and airbag (SRS) warning light, among others.

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