What causes the exclamation mark engine warning light to illuminate in the Roewe 360?

[DelLuna]

The exclamation mark inside the engine symbol represents the engine warning light. There are primarily 7 reasons for its illumination: Sensor malfunction: This refers to sensors including coolant temperature, crankshaft position, air flow, intake air temperature, and oxygen sensors. When these sensors are damaged, have poor connections, or experience signal interruptions, the vehicle's ECU cannot accurately obtain engine data, triggering the warning light. Fuel/oil quality issues: Failure to use fuel and engine oil as specified by the manufacturer may cause engine wear, leading to warning light activation. Poor fuel mixture combustion: This can result in engine carbon buildup or knocking. When detected by oxygen sensors and reported to the ECU, the warning light illuminates as an alert. Causes include spark plug failure, ignition coil issues, fuel pump malfunction, or fuel line blockages. Turbocharging problems: Issues with intake boost pipes or turbochargers can trigger the warning light. The most common is turbocharger damage, often accompanied by oil leaks, excessive oil consumption, power loss, metallic noises, or blue/black exhaust smoke. Intake system issues: Air intake problems may cause engine pipe blockages, potentially triggering the warning light. A dirty air filter that hasn't been regularly cleaned can lead to intake problems. Exhaust system faults: These can also activate the warning light. Common causes include rear oxygen sensor failure, catalytic converter issues, or exhaust camshaft/bearing problems. Leaded gasoline, improper lubricant additives, physical damage to the catalytic converter, or fuel system malfunctions often contribute to catalytic converter failure. Anti-theft system malfunction: If the electronic anti-theft system fails or doesn't match the engine control unit, it may prevent normal engine operation while illuminating the warning light. When the engine warning light illuminates, follow these steps: First check if the engine operates normally. If there's noticeable shaking, black smoke, etc., avoid restarting. Never restart if the light is red. If the engine starts normally, turn it off for 5-10 minutes. Without pressing the brake, press the start button once or turn the key halfway to 'ON' (without engaging the clutch). The vehicle will perform a self-check for 5-10 seconds - observe if the warning light turns off. If the light persists, visit a service center promptly. Technicians can use diagnostic tools to read trouble codes and perform targeted repairs.