What causes the four warning lights to illuminate in the Ford Escort?

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The main reasons for the four warning lights illuminating in the Ford Escort are: 1. Bus failure of the onboard computer, poor contact at the ECU CAN interface: This can cause the warning lights to illuminate. 2. Excessive dirt and carbon deposits: Abnormal air circulation, inability to accurately control normal air intake, leading to unstable gas content and engine malfunction. 3. Low fuel pressure: Results in poor atomization, causing difficulty in starting. Below is some additional information about the car's development concept: The new-generation Ford Escort subverts traditional perceptions of a joint-venture family sedan in the 100,000-yuan price range, integrating the three key experiences of 'life dignity,' 'social superiority,' and 'driving and riding safety,' along with its inherent DNA of superior handling. It redefines the benchmark in this segment, offering users exceptional value.