How to Solve the Illuminated Engine Warning Light in the Tiguan?

[Lawson]

If the engine warning light in your Tiguan is illuminated, you can follow these steps to address the issue: First, check whether the engine is running normally and if there are any issues such as shaking or black smoke. If these symptoms are present, avoid restarting the engine. Note: If the light is red, do not restart the engine under any circumstances. If the engine can start, turn it off and wait for 5-10 minutes. Without pressing the brake, press the start button once or turn the key halfway to the 'ON' position without engaging the clutch. The vehicle will perform a self-diagnostic check upon powering up. Wait for 5-10 seconds and observe whether the warning light on the dashboard turns off. If the warning light remains illuminated, visit a service center as soon as possible to diagnose the issue. The service center can use a portable diagnostic tool to read the trouble codes, identify the problem, and perform targeted repairs. The engine warning light resembles a water tap 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 light is on, it means certain vehicle system parameters may be outside the set range, and the car can still be driven, albeit with some functions restricted. If the red light is illuminated, the vehicle must be stopped immediately, the engine turned off, and further driving prohibited until the issue is inspected. Common causes of an illuminated engine warning light include: sensor failure, fuel quality issues, poor combustion of the air-fuel mixture, turbocharger problems, intake or exhaust issues, and anti-theft system malfunctions.