How to resolve the engine warning light issue in Mercedes-Benz C260?

[OLukas]

If the engine warning light is on in your Mercedes-Benz C260, you can follow these steps to address the issue: First, check if the engine is running normally and whether there are issues such as shaking or emitting black smoke. If these symptoms are present, avoid restarting the engine. Particularly, if the red light is on, do not attempt to start the engine under any circumstances. If the engine can be started, turn it off and wait for 5-10 minutes. Without pressing the brake pedal, simply press the start button once, or turn the car key halfway to the 'on' position without depressing the clutch. The car will perform a self-diagnosis upon powering up. Wait for 5-10 seconds and observe whether the warning light on the dashboard turns off. If the warning light remains on, visit a service center as soon as possible to identify the cause. The service center can use a portable diagnostic tool to read the fault codes, obtain fault information, and perform targeted repairs. The engine warning light is shaped like a water drop icon and comes in two colors: yellow and red. A yellow light indicates a warning, while a red light signifies a prohibition. When the yellow warning light is on, it means certain system parameters may have exceeded the set range, but the car can still be driven, albeit with some functions limited. When the red warning light is on, the car must be stopped immediately, the engine turned off, and further driving prohibited until the fault is checked. Common causes for the engine warning light to illuminate include: sensor failure, oil quality issues, poor combustion of the air-fuel mixture, turbocharging problems, intake issues, exhaust problems, and anti-theft system malfunctions.