What Causes All Mercedes Warning Lights to Illuminate and Dashboard Malfunction?

1 Answers
ArielLee
07/29/25 9:34pm
Mercedes warning lights all illuminated and dashboard malfunction reasons: ECU CAN bus failure, poor contact at ECU CAN interface. Excessive dirt and carbon deposits, abnormal air circulation, inability to accurately control normal air intake volume leading to unstable gas content, causing the engine to operate poorly; low fuel pressure combined with poor constant pressure performance results in low system atomization level, making the vehicle difficult to start. Charging system indicator light: When the ignition switch is turned on but the engine is not running, this indicator light remains illuminated, or if it lights up while driving, it indicates a potential fault in the charging system; Malfunction indicator light: When the ignition switch is turned on, the malfunction indicator light illuminates, showing it is operational. If the light comes on while the engine is running, it indicates an abnormality in the emission control system; Anti-lock Braking System (ABS) warning light: When the engine starts, the warning light illuminates, showing it is operational, and automatically turns off after a few seconds. If the ABS warning light remains illuminated or lights up during driving, the vehicle requires servicing.
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